./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/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_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/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_8319521f-0921-43a1-9b37-fadfad90d1f3/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 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c --- 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 01:40:56,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:40:56,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:40:56,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:40:56,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:40:56,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:40:56,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:40:56,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:40:56,953 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:40:56,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:40:56,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:40:56,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:40:56,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:40:56,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:40:56,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:40:56,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:40:56,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:40:56,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:40:56,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:40:56,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:40:56,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:40:56,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:40:56,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:40:56,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:40:56,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:40:56,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:40:56,979 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:40:56,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:40:56,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:40:56,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:40:56,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:40:56,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:40:56,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:40:56,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:40:56,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:40:56,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:40:56,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:40:56,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:40:56,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:40:56,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:40:56,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:40:56,991 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:40:57,013 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:40:57,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:40:57,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:40:57,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:40:57,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:40:57,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:40:57,016 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:40:57,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:40:57,016 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:40:57,017 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:40:57,017 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:40:57,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:40:57,017 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:40:57,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:40:57,018 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:40:57,018 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:40:57,018 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:40:57,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:40:57,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:40:57,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:40:57,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:40:57,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:40:57,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:40:57,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:40:57,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:40:57,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:40:57,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:40:57,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:40:57,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:40:57,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:40:57,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:40:57,023 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:40:57,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:40:57,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:40:57,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:40:57,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:40:57,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:40:57,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:40:57,025 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_8319521f-0921-43a1-9b37-fadfad90d1f3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9bfbecd8ca52470a88d05c2ee48bea0bde6dbc2be84932ebcf7050b5532f4c7c [2022-11-03 01:40:57,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:40:57,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:40:57,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:40:57,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:40:57,310 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:40:57,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2022-11-03 01:40:57,371 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/data/3be13ed56/6542389cfd4344ce964a06c7b08a35c8/FLAGce5ef75f9 [2022-11-03 01:40:58,487 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:40:58,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2022-11-03 01:40:58,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/data/3be13ed56/6542389cfd4344ce964a06c7b08a35c8/FLAGce5ef75f9 [2022-11-03 01:40:58,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/data/3be13ed56/6542389cfd4344ce964a06c7b08a35c8 [2022-11-03 01:40:58,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:40:58,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:40:58,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:40:58,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:40:58,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:40:58,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:58" (1/1) ... [2022-11-03 01:40:58,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4314da86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:40:58, skipping insertion in model container [2022-11-03 01:40:58,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:40:58" (1/1) ... [2022-11-03 01:40:58,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:40:58,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:41:03,973 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2022-11-03 01:41:03,976 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2022-11-03 01:41:03,977 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2022-11-03 01:41:03,977 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2022-11-03 01:41:03,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:04,014 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:41:04,506 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517003,517016] [2022-11-03 01:41:04,507 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517172,517185] [2022-11-03 01:41:04,507 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517339,517352] [2022-11-03 01:41:04,508 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_8319521f-0921-43a1-9b37-fadfad90d1f3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i[517507,517520] [2022-11-03 01:41:04,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:41:04,731 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:41:04,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04 WrapperNode [2022-11-03 01:41:04,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:41:04,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:04,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:41:04,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:41:04,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:04,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,184 INFO L138 Inliner]: procedures = 584, calls = 2495, calls flagged for inlining = 241, calls inlined = 220, statements flattened = 7034 [2022-11-03 01:41:05,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:41:05,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:41:05,186 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:41:05,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:41:05,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,417 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:41:05,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:41:05,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:41:05,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:41:05,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (1/1) ... [2022-11-03 01:41:05,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:41:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:41:05,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:41:05,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:41:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_parallel [2022-11-03 01:41:05,557 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_parallel [2022-11-03 01:41:05,557 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-03 01:41:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure i_size_read [2022-11-03 01:41:05,558 INFO L138 BoogieDeclarations]: Found implementation of procedure i_size_read [2022-11-03 01:41:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:41:05,558 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:41:05,558 INFO L130 BoogieDeclarations]: Found specification of procedure add_to_commitlist [2022-11-03 01:41:05,558 INFO L138 BoogieDeclarations]: Found implementation of procedure add_to_commitlist [2022-11-03 01:41:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_put_sb_net [2022-11-03 01:41:05,559 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_put_sb_net [2022-11-03 01:41:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 01:41:05,559 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 01:41:05,559 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 01:41:05,559 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 01:41:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_pagelist [2022-11-03 01:41:05,560 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_pagelist [2022-11-03 01:41:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 01:41:05,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 01:41:05,560 INFO L130 BoogieDeclarations]: Found specification of procedure bio_alloc [2022-11-03 01:41:05,560 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_alloc [2022-11-03 01:41:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:41:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 01:41:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_unregister_layoutdriver [2022-11-03 01:41:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_unregister_layoutdriver [2022-11-03 01:41:05,561 INFO L130 BoogieDeclarations]: Found specification of procedure trylock_page [2022-11-03 01:41:05,561 INFO L138 BoogieDeclarations]: Found implementation of procedure trylock_page [2022-11-03 01:41:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure submit_bio [2022-11-03 01:41:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_bio [2022-11-03 01:41:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure BLK_LSEG2EXT [2022-11-03 01:41:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure BLK_LSEG2EXT [2022-11-03 01:41:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_unregister_sb [2022-11-03 01:41:05,562 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_unregister_sb [2022-11-03 01:41:05,562 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 01:41:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-03 01:41:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2022-11-03 01:41:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2022-11-03 01:41:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 01:41:05,563 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 01:41:05,563 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:41:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_release [2022-11-03 01:41:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_release [2022-11-03 01:41:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure BLK_LO2EXT [2022-11-03 01:41:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure BLK_LO2EXT [2022-11-03 01:41:05,564 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-03 01:41:05,564 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-03 01:41:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 01:41:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 01:41:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure print_page [2022-11-03 01:41:05,565 INFO L138 BoogieDeclarations]: Found implementation of procedure print_page [2022-11-03 01:41:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-03 01:41:05,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 01:41:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 01:41:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure PageWriteback [2022-11-03 01:41:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure PageWriteback [2022-11-03 01:41:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:41:05,566 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_layout_hdr [2022-11-03 01:41:05,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_layout_hdr [2022-11-03 01:41:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure print_clist [2022-11-03 01:41:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure print_clist [2022-11-03 01:41:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 01:41:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 01:41:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 01:41:05,567 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 01:41:05,567 INFO L130 BoogieDeclarations]: Found specification of procedure zero_user_segments [2022-11-03 01:41:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_user_segments [2022-11-03 01:41:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 01:41:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 01:41:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-11-03 01:41:05,568 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-11-03 01:41:05,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 01:41:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 01:41:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 01:41:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure bl_alloc_layout_hdr [2022-11-03 01:41:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_alloc_layout_hdr [2022-11-03 01:41:05,569 INFO L130 BoogieDeclarations]: Found specification of procedure PageDirty [2022-11-03 01:41:05,569 INFO L138 BoogieDeclarations]: Found implementation of procedure PageDirty [2022-11-03 01:41:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 01:41:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 01:41:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure is_writable [2022-11-03 01:41:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure is_writable [2022-11-03 01:41:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 01:41:05,570 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 01:41:05,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 01:41:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure normalize [2022-11-03 01:41:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize [2022-11-03 01:41:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2022-11-03 01:41:05,571 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2022-11-03 01:41:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:41:05,571 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_80 [2022-11-03 01:41:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_80 [2022-11-03 01:41:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_net_exit [2022-11-03 01:41:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_net_exit [2022-11-03 01:41:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 01:41:05,572 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 01:41:05,572 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_get_sb_net [2022-11-03 01:41:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_get_sb_net [2022-11-03 01:41:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure extents_consistent [2022-11-03 01:41:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure extents_consistent [2022-11-03 01:41:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 01:41:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 01:41:05,573 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_rpc_pipefs_notifier_unregister [2022-11-03 01:41:05,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_rpc_pipefs_notifier_unregister [2022-11-03 01:41:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure bl_submit_bio [2022-11-03 01:41:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_submit_bio [2022-11-03 01:41:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-03 01:41:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-03 01:41:05,574 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_queue_upcall [2022-11-03 01:41:05,574 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_queue_upcall [2022-11-03 01:41:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2022-11-03 01:41:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2022-11-03 01:41:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock [2022-11-03 01:41:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock [2022-11-03 01:41:05,575 INFO L130 BoogieDeclarations]: Found specification of procedure bl_put_extent [2022-11-03 01:41:05,575 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_put_extent [2022-11-03 01:41:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:41:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 01:41:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:41:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 01:41:05,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 01:41:05,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 01:41:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 01:41:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 01:41:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 01:41:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 01:41:05,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 01:41:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:41:05,577 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2022-11-03 01:41:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2022-11-03 01:41:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:41:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:41:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:41:05,578 INFO L130 BoogieDeclarations]: Found specification of procedure clean_pnfs_block_layoutupdate [2022-11-03 01:41:05,578 INFO L138 BoogieDeclarations]: Found implementation of procedure clean_pnfs_block_layoutupdate [2022-11-03 01:41:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 01:41:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure bl_alloc_lseg [2022-11-03 01:41:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_alloc_lseg [2022-11-03 01:41:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:41:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 01:41:05,579 INFO L130 BoogieDeclarations]: Found specification of procedure lock_page [2022-11-03 01:41:05,579 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_page [2022-11-03 01:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure end_page_writeback [2022-11-03 01:41:05,580 INFO L138 BoogieDeclarations]: Found implementation of procedure end_page_writeback [2022-11-03 01:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure print_elist [2022-11-03 01:41:05,580 INFO L138 BoogieDeclarations]: Found implementation of procedure print_elist [2022-11-03 01:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 01:41:05,580 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 01:41:05,580 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-03 01:41:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-03 01:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-11-03 01:41:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-11-03 01:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 01:41:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 01:41:05,581 INFO L130 BoogieDeclarations]: Found specification of procedure bl_cleanup_layoutcommit [2022-11-03 01:41:05,581 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_cleanup_layoutcommit [2022-11-03 01:41:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure PageLocked [2022-11-03 01:41:05,582 INFO L138 BoogieDeclarations]: Found implementation of procedure PageLocked [2022-11-03 01:41:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_generic_pg_test [2022-11-03 01:41:05,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_generic_pg_test [2022-11-03 01:41:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_destroy_pipe_data [2022-11-03 01:41:05,582 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_destroy_pipe_data [2022-11-03 01:41:05,582 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_parallel [2022-11-03 01:41:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_parallel [2022-11-03 01:41:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 01:41:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 01:41:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure bl_is_sector_init [2022-11-03 01:41:05,583 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_is_sector_init [2022-11-03 01:41:05,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:41:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:41:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 01:41:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 01:41:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 01:41:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 01:41:05,584 INFO L130 BoogieDeclarations]: Found specification of procedure unlock_page [2022-11-03 01:41:05,584 INFO L138 BoogieDeclarations]: Found implementation of procedure unlock_page [2022-11-03 01:41:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2022-11-03 01:41:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2022-11-03 01:41:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure remove_wait_queue [2022-11-03 01:41:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_wait_queue [2022-11-03 01:41:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure bl_clear_layoutdriver [2022-11-03 01:41:05,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_clear_layoutdriver [2022-11-03 01:41:05,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 01:41:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 01:41:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:41:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:41:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure bl_pipe_destroy_msg [2022-11-03 01:41:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_pipe_destroy_msg [2022-11-03 01:41:05,586 INFO L130 BoogieDeclarations]: Found specification of procedure bl_read_pagelist [2022-11-03 01:41:05,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_read_pagelist [2022-11-03 01:41:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:41:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 01:41:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-03 01:41:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-03 01:41:05,587 INFO L130 BoogieDeclarations]: Found specification of procedure print_bl_extent [2022-11-03 01:41:05,587 INFO L138 BoogieDeclarations]: Found implementation of procedure print_bl_extent [2022-11-03 01:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_read [2022-11-03 01:41:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_read [2022-11-03 01:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2022-11-03 01:41:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2022-11-03 01:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_encode_hyper [2022-11-03 01:41:05,588 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_encode_hyper [2022-11-03 01:41:05,588 INFO L130 BoogieDeclarations]: Found specification of procedure bl_write_cleanup [2022-11-03 01:41:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_write_cleanup [2022-11-03 01:41:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 01:41:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 01:41:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure bl_mark_sectors_init [2022-11-03 01:41:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_mark_sectors_init [2022-11-03 01:41:05,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:41:05,589 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:41:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure free_blk_mountid [2022-11-03 01:41:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure free_blk_mountid [2022-11-03 01:41:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-03 01:41:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-03 01:41:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure is_range_written [2022-11-03 01:41:05,590 INFO L138 BoogieDeclarations]: Found implementation of procedure is_range_written [2022-11-03 01:41:05,590 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 01:41:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 01:41:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:41:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 01:41:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 01:41:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure list_replace [2022-11-03 01:41:05,591 INFO L138 BoogieDeclarations]: Found implementation of procedure list_replace [2022-11-03 01:41:05,591 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2022-11-03 01:41:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2022-11-03 01:41:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:41:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2022-11-03 01:41:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2022-11-03 01:41:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-03 01:41:05,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-03 01:41:05,592 INFO L130 BoogieDeclarations]: Found specification of procedure is_aligned_req [2022-11-03 01:41:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure is_aligned_req [2022-11-03 01:41:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 01:41:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 01:41:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure _prep_new_extent [2022-11-03 01:41:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure _prep_new_extent [2022-11-03 01:41:05,593 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2022-11-03 01:41:05,593 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2022-11-03 01:41:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:41:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure print_short_extent [2022-11-03 01:41:05,594 INFO L138 BoogieDeclarations]: Found implementation of procedure print_short_extent [2022-11-03 01:41:05,594 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2022-11-03 01:41:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2022-11-03 01:41:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_reserve_space [2022-11-03 01:41:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_reserve_space [2022-11-03 01:41:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 01:41:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 01:41:05,595 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_pipefs_notifier_unregister [2022-11-03 01:41:05,595 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_pipefs_notifier_unregister [2022-11-03 01:41:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_im_lock_of_pnfs_inval_markings [2022-11-03 01:41:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_im_lock_of_pnfs_inval_markings [2022-11-03 01:41:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure add_wait_queue [2022-11-03 01:41:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure add_wait_queue [2022-11-03 01:41:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure bl_push_one_short_extent [2022-11-03 01:41:05,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_push_one_short_extent [2022-11-03 01:41:05,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 01:41:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 01:41:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-11-03 01:41:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-11-03 01:41:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-03 01:41:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-03 01:41:05,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2022-11-03 01:41:05,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2022-11-03 01:41:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 01:41:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 01:41:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_lock [2022-11-03 01:41:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_lock [2022-11-03 01:41:05,598 INFO L130 BoogieDeclarations]: Found specification of procedure _set_range [2022-11-03 01:41:05,598 INFO L138 BoogieDeclarations]: Found implementation of procedure _set_range [2022-11-03 01:41:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure bl_encode_layoutcommit [2022-11-03 01:41:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_encode_layoutcommit [2022-11-03 01:41:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure mark_extents_written [2022-11-03 01:41:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure mark_extents_written [2022-11-03 01:41:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2022-11-03 01:41:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2022-11-03 01:41:05,599 INFO L130 BoogieDeclarations]: Found specification of procedure _add_entry [2022-11-03 01:41:05,599 INFO L138 BoogieDeclarations]: Found implementation of procedure _add_entry [2022-11-03 01:41:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure _front_merge [2022-11-03 01:41:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure _front_merge [2022-11-03 01:41:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure do_add_page_to_bio [2022-11-03 01:41:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure do_add_page_to_bio [2022-11-03 01:41:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 01:41:05,600 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 01:41:05,600 INFO L130 BoogieDeclarations]: Found specification of procedure net_generic [2022-11-03 01:41:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure net_generic [2022-11-03 01:41:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_79 [2022-11-03 01:41:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_79 [2022-11-03 01:41:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2022-11-03 01:41:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2022-11-03 01:41:05,601 INFO L130 BoogieDeclarations]: Found specification of procedure bl_find_get_extent [2022-11-03 01:41:05,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_find_get_extent [2022-11-03 01:41:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure bl_free_lseg [2022-11-03 01:41:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_free_lseg [2022-11-03 01:41:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 01:41:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 01:41:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:41:05,602 INFO L130 BoogieDeclarations]: Found specification of procedure __rcu_read_unlock [2022-11-03 01:41:05,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __rcu_read_unlock [2022-11-03 01:41:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4blocklayout_register_sb [2022-11-03 01:41:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4blocklayout_register_sb [2022-11-03 01:41:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 01:41:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 01:41:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure SetPageUptodate [2022-11-03 01:41:05,603 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPageUptodate [2022-11-03 01:41:05,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_im_lock_of_pnfs_inval_markings [2022-11-03 01:41:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_im_lock_of_pnfs_inval_markings [2022-11-03 01:41:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2022-11-03 01:41:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2022-11-03 01:41:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure zero_user_segment [2022-11-03 01:41:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure zero_user_segment [2022-11-03 01:41:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2022-11-03 01:41:05,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2022-11-03 01:41:05,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4blocklayout_exit_7_2 [2022-11-03 01:41:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4blocklayout_exit_7_2 [2022-11-03 01:41:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure decode_sector_number [2022-11-03 01:41:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_sector_number [2022-11-03 01:41:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure bl_read_partial_page_sync [2022-11-03 01:41:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_read_partial_page_sync [2022-11-03 01:41:05,605 INFO L130 BoogieDeclarations]: Found specification of procedure put_parallel [2022-11-03 01:41:05,605 INFO L138 BoogieDeclarations]: Found implementation of procedure put_parallel [2022-11-03 01:41:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 01:41:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 01:41:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_generic_pg_init_read [2022-11-03 01:41:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_generic_pg_init_read [2022-11-03 01:41:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write [2022-11-03 01:41:05,606 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write [2022-11-03 01:41:05,606 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2022-11-03 01:41:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2022-11-03 01:41:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-03 01:41:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-03 01:41:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure PageUptodate [2022-11-03 01:41:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure PageUptodate [2022-11-03 01:41:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure bio_add_page [2022-11-03 01:41:05,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_add_page [2022-11-03 01:41:05,607 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-03 01:41:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-03 01:41:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure release_extents [2022-11-03 01:41:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure release_extents [2022-11-03 01:41:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-03 01:41:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-03 01:41:05,608 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_lock_acquire [2022-11-03 01:41:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_lock_acquire [2022-11-03 01:41:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 01:41:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 01:41:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure bl_do_readpage_sync [2022-11-03 01:41:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_do_readpage_sync [2022-11-03 01:41:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 01:41:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 01:41:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure bl_set_layoutdriver [2022-11-03 01:41:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_set_layoutdriver [2022-11-03 01:41:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure bl_end_io_write_zero [2022-11-03 01:41:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure bl_end_io_write_zero [2022-11-03 01:41:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_up [2022-11-03 01:41:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_up [2022-11-03 01:41:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 01:41:05,610 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 01:41:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-03 01:41:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-03 01:41:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 01:41:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 01:41:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:41:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 01:41:05,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 01:41:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_set_lo_fail [2022-11-03 01:41:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_set_lo_fail [2022-11-03 01:41:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure set_to_rw [2022-11-03 01:41:05,612 INFO L138 BoogieDeclarations]: Found implementation of procedure set_to_rw [2022-11-03 01:41:06,842 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:41:06,846 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:41:07,109 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:41:14,212 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 01:41:14,453 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:41:16,861 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:41:16,861 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-03 01:41:16,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:16 BoogieIcfgContainer [2022-11-03 01:41:16,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:41:16,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:41:16,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:41:16,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:41:16,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:40:58" (1/3) ... [2022-11-03 01:41:16,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f7f42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:16, skipping insertion in model container [2022-11-03 01:41:16,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:41:04" (2/3) ... [2022-11-03 01:41:16,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f7f42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:41:16, skipping insertion in model container [2022-11-03 01:41:16,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:41:16" (3/3) ... [2022-11-03 01:41:16,877 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-blocklayout-blocklayoutdriver.cil.i [2022-11-03 01:41:16,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:41:16,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 01:41:17,004 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:41:17,011 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;@14fc3280, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:41:17,011 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 01:41:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 2392 states, 1371 states have (on average 1.2895696571845368) internal successors, (1768), 1420 states have internal predecessors, (1768), 848 states have call successors, (848), 173 states have call predecessors, (848), 172 states have return successors, (841), 826 states have call predecessors, (841), 841 states have call successors, (841) [2022-11-03 01:41:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-11-03 01:41:17,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:17,053 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:17,054 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 01:41:17,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:17,059 INFO L85 PathProgramCache]: Analyzing trace with hash 142751763, now seen corresponding path program 1 times [2022-11-03 01:41:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255887035] [2022-11-03 01:41:17,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2022-11-03 01:41:18,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:18,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255887035] [2022-11-03 01:41:18,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255887035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:18,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:18,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:18,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076365920] [2022-11-03 01:41:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:18,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:18,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:18,310 INFO L87 Difference]: Start difference. First operand has 2392 states, 1371 states have (on average 1.2895696571845368) internal successors, (1768), 1420 states have internal predecessors, (1768), 848 states have call successors, (848), 173 states have call predecessors, (848), 172 states have return successors, (841), 826 states have call predecessors, (841), 841 states have call successors, (841) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 01:41:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:21,433 INFO L93 Difference]: Finished difference Result 6902 states and 10251 transitions. [2022-11-03 01:41:21,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 365 [2022-11-03 01:41:21,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:21,489 INFO L225 Difference]: With dead ends: 6902 [2022-11-03 01:41:21,489 INFO L226 Difference]: Without dead ends: 4568 [2022-11-03 01:41:21,520 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 01:41:21,523 INFO L413 NwaCegarLoop]: 3734 mSDtfsCounter, 3196 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3196 SdHoareTripleChecker+Valid, 6655 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:21,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3196 Valid, 6655 Invalid, 916 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:41:21,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2022-11-03 01:41:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4564. [2022-11-03 01:41:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 2636 states have (on average 1.2830045523520486) internal successors, (3382), 2737 states have internal predecessors, (3382), 1586 states have call successors, (1586), 340 states have call predecessors, (1586), 339 states have return successors, (1582), 1552 states have call predecessors, (1582), 1582 states have call successors, (1582) [2022-11-03 01:41:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6550 transitions. [2022-11-03 01:41:21,997 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6550 transitions. Word has length 365 [2022-11-03 01:41:22,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:22,004 INFO L495 AbstractCegarLoop]: Abstraction has 4564 states and 6550 transitions. [2022-11-03 01:41:22,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-11-03 01:41:22,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6550 transitions. [2022-11-03 01:41:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2022-11-03 01:41:22,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:22,025 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:22,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:41:22,026 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 01:41:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1006261112, now seen corresponding path program 1 times [2022-11-03 01:41:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172404961] [2022-11-03 01:41:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2022-11-03 01:41:22,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:22,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172404961] [2022-11-03 01:41:22,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172404961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:22,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:22,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331490572] [2022-11-03 01:41:22,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:22,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:22,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:22,653 INFO L87 Difference]: Start difference. First operand 4564 states and 6550 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:41:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:25,214 INFO L93 Difference]: Finished difference Result 11224 states and 16077 transitions. [2022-11-03 01:41:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:25,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 379 [2022-11-03 01:41:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:25,264 INFO L225 Difference]: With dead ends: 11224 [2022-11-03 01:41:25,265 INFO L226 Difference]: Without dead ends: 6729 [2022-11-03 01:41:25,288 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 01:41:25,289 INFO L413 NwaCegarLoop]: 3742 mSDtfsCounter, 3166 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 6673 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:25,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 6673 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 01:41:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2022-11-03 01:41:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 6696. [2022-11-03 01:41:25,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6696 states, 3859 states have (on average 1.2788287121015807) internal successors, (4935), 4011 states have internal predecessors, (4935), 2321 states have call successors, (2321), 514 states have call predecessors, (2321), 513 states have return successors, (2317), 2267 states have call predecessors, (2317), 2317 states have call successors, (2317) [2022-11-03 01:41:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6696 states to 6696 states and 9573 transitions. [2022-11-03 01:41:25,893 INFO L78 Accepts]: Start accepts. Automaton has 6696 states and 9573 transitions. Word has length 379 [2022-11-03 01:41:25,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:25,895 INFO L495 AbstractCegarLoop]: Abstraction has 6696 states and 9573 transitions. [2022-11-03 01:41:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:41:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 6696 states and 9573 transitions. [2022-11-03 01:41:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-03 01:41:25,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:25,906 INFO L195 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:41:25,907 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 01:41:25,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:25,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2049164051, now seen corresponding path program 1 times [2022-11-03 01:41:25,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:25,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126717132] [2022-11-03 01:41:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:25,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4556 trivial. 0 not checked. [2022-11-03 01:41:26,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:26,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126717132] [2022-11-03 01:41:26,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126717132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:26,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:26,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:41:26,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041588667] [2022-11-03 01:41:26,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:26,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:41:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:41:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:41:26,313 INFO L87 Difference]: Start difference. First operand 6696 states and 9573 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:41:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:29,541 INFO L93 Difference]: Finished difference Result 14153 states and 20172 transitions. [2022-11-03 01:41:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:41:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 378 [2022-11-03 01:41:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:29,597 INFO L225 Difference]: With dead ends: 14153 [2022-11-03 01:41:29,597 INFO L226 Difference]: Without dead ends: 7526 [2022-11-03 01:41:29,632 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 01:41:29,633 INFO L413 NwaCegarLoop]: 5319 mSDtfsCounter, 3186 mSDsluCounter, 3346 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 8250 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:29,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3186 Valid, 8250 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1221 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:41:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2022-11-03 01:41:30,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 7493. [2022-11-03 01:41:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7493 states, 4347 states have (on average 1.279043018173453) internal successors, (5560), 4516 states have internal predecessors, (5560), 2542 states have call successors, (2542), 602 states have call predecessors, (2542), 601 states have return successors, (2538), 2479 states have call predecessors, (2538), 2538 states have call successors, (2538) [2022-11-03 01:41:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7493 states to 7493 states and 10640 transitions. [2022-11-03 01:41:30,232 INFO L78 Accepts]: Start accepts. Automaton has 7493 states and 10640 transitions. Word has length 378 [2022-11-03 01:41:30,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:30,233 INFO L495 AbstractCegarLoop]: Abstraction has 7493 states and 10640 transitions. [2022-11-03 01:41:30,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2022-11-03 01:41:30,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7493 states and 10640 transitions. [2022-11-03 01:41:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-11-03 01:41:30,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:30,246 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:30,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:41:30,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:41:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1096110886, now seen corresponding path program 1 times [2022-11-03 01:41:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:30,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81808807] [2022-11-03 01:41:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:30,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4720 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2022-11-03 01:41:31,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:31,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81808807] [2022-11-03 01:41:31,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81808807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:31,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:31,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:31,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603542886] [2022-11-03 01:41:31,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:31,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:31,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:31,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:31,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:31,318 INFO L87 Difference]: Start difference. First operand 7493 states and 10640 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 01:41:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:34,367 INFO L93 Difference]: Finished difference Result 7499 states and 10645 transitions. [2022-11-03 01:41:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:34,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 407 [2022-11-03 01:41:34,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:34,444 INFO L225 Difference]: With dead ends: 7499 [2022-11-03 01:41:34,444 INFO L226 Difference]: Without dead ends: 7497 [2022-11-03 01:41:34,451 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 01:41:34,453 INFO L413 NwaCegarLoop]: 2958 mSDtfsCounter, 3295 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 8855 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:34,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3312 Valid, 8855 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:41:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7497 states. [2022-11-03 01:41:34,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7497 to 7497. [2022-11-03 01:41:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7497 states, 4350 states have (on average 1.2788505747126437) internal successors, (5563), 4519 states have internal predecessors, (5563), 2542 states have call successors, (2542), 603 states have call predecessors, (2542), 602 states have return successors, (2538), 2479 states have call predecessors, (2538), 2538 states have call successors, (2538) [2022-11-03 01:41:34,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 10643 transitions. [2022-11-03 01:41:34,969 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 10643 transitions. Word has length 407 [2022-11-03 01:41:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:34,971 INFO L495 AbstractCegarLoop]: Abstraction has 7497 states and 10643 transitions. [2022-11-03 01:41:34,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-03 01:41:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 10643 transitions. [2022-11-03 01:41:34,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2022-11-03 01:41:34,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:34,981 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:34,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:41:34,982 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 01:41:34,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1232310294, now seen corresponding path program 1 times [2022-11-03 01:41:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:34,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364071487] [2022-11-03 01:41:34,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4722 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4720 trivial. 0 not checked. [2022-11-03 01:41:35,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:35,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364071487] [2022-11-03 01:41:35,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364071487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:35,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:35,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466942410] [2022-11-03 01:41:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:35,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:35,768 INFO L87 Difference]: Start difference. First operand 7497 states and 10643 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 01:41:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:38,307 INFO L93 Difference]: Finished difference Result 7503 states and 10648 transitions. [2022-11-03 01:41:38,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:38,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 412 [2022-11-03 01:41:38,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:38,350 INFO L225 Difference]: With dead ends: 7503 [2022-11-03 01:41:38,351 INFO L226 Difference]: Without dead ends: 7501 [2022-11-03 01:41:38,357 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 01:41:38,357 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3306 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3306 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 01:41:38,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7501 states. [2022-11-03 01:41:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7501 to 7501. [2022-11-03 01:41:38,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7501 states, 4353 states have (on average 1.2786583965081553) internal successors, (5566), 4522 states have internal predecessors, (5566), 2542 states have call successors, (2542), 604 states have call predecessors, (2542), 603 states have return successors, (2538), 2479 states have call predecessors, (2538), 2538 states have call successors, (2538) [2022-11-03 01:41:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 10646 transitions. [2022-11-03 01:41:38,875 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 10646 transitions. Word has length 412 [2022-11-03 01:41:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:38,876 INFO L495 AbstractCegarLoop]: Abstraction has 7501 states and 10646 transitions. [2022-11-03 01:41:38,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) [2022-11-03 01:41:38,877 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 10646 transitions. [2022-11-03 01:41:38,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2022-11-03 01:41:38,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:38,887 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:41:38,887 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 01:41:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 33146214, now seen corresponding path program 1 times [2022-11-03 01:41:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:38,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610720317] [2022-11-03 01:41:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:38,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:39,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4728 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4724 trivial. 0 not checked. [2022-11-03 01:41:39,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610720317] [2022-11-03 01:41:39,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610720317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:39,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:39,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:39,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495903693] [2022-11-03 01:41:39,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:39,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:39,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:39,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:39,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:39,666 INFO L87 Difference]: Start difference. First operand 7501 states and 10646 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 01:41:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:43,048 INFO L93 Difference]: Finished difference Result 7507 states and 10651 transitions. [2022-11-03 01:41:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:43,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 417 [2022-11-03 01:41:43,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:43,088 INFO L225 Difference]: With dead ends: 7507 [2022-11-03 01:41:43,089 INFO L226 Difference]: Without dead ends: 7505 [2022-11-03 01:41:43,095 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 01:41:43,096 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:43,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3305 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 01:41:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7505 states. [2022-11-03 01:41:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7505 to 7505. [2022-11-03 01:41:43,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7505 states, 4356 states have (on average 1.2784664830119377) internal successors, (5569), 4525 states have internal predecessors, (5569), 2542 states have call successors, (2542), 605 states have call predecessors, (2542), 604 states have return successors, (2538), 2479 states have call predecessors, (2538), 2538 states have call successors, (2538) [2022-11-03 01:41:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7505 states to 7505 states and 10649 transitions. [2022-11-03 01:41:43,785 INFO L78 Accepts]: Start accepts. Automaton has 7505 states and 10649 transitions. Word has length 417 [2022-11-03 01:41:43,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:43,787 INFO L495 AbstractCegarLoop]: Abstraction has 7505 states and 10649 transitions. [2022-11-03 01:41:43,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-03 01:41:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states and 10649 transitions. [2022-11-03 01:41:43,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-03 01:41:43,800 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:43,801 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:43,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:41:43,801 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 01:41:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1303407318, now seen corresponding path program 1 times [2022-11-03 01:41:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:43,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140326690] [2022-11-03 01:41:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:43,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4738 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4732 trivial. 0 not checked. [2022-11-03 01:41:44,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:44,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140326690] [2022-11-03 01:41:44,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140326690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:44,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:44,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296969969] [2022-11-03 01:41:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:44,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:44,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:44,685 INFO L87 Difference]: Start difference. First operand 7505 states and 10649 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:41:48,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:48,675 INFO L93 Difference]: Finished difference Result 9327 states and 13140 transitions. [2022-11-03 01:41:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:48,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 422 [2022-11-03 01:41:48,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:48,726 INFO L225 Difference]: With dead ends: 9327 [2022-11-03 01:41:48,726 INFO L226 Difference]: Without dead ends: 9325 [2022-11-03 01:41:48,734 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 01:41:48,734 INFO L413 NwaCegarLoop]: 3482 mSDtfsCounter, 3128 mSDsluCounter, 8919 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3142 SdHoareTripleChecker+Valid, 11281 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:48,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3142 Valid, 11281 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-03 01:41:48,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9325 states. [2022-11-03 01:41:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9325 to 9315. [2022-11-03 01:41:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9315 states, 5328 states have (on average 1.2727102102102101) internal successors, (6781), 5581 states have internal predecessors, (6781), 3133 states have call successors, (3133), 867 states have call predecessors, (3133), 851 states have return successors, (3216), 3004 states have call predecessors, (3216), 3129 states have call successors, (3216) [2022-11-03 01:41:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9315 states to 9315 states and 13130 transitions. [2022-11-03 01:41:49,508 INFO L78 Accepts]: Start accepts. Automaton has 9315 states and 13130 transitions. Word has length 422 [2022-11-03 01:41:49,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:49,509 INFO L495 AbstractCegarLoop]: Abstraction has 9315 states and 13130 transitions. [2022-11-03 01:41:49,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:41:49,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9315 states and 13130 transitions. [2022-11-03 01:41:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-11-03 01:41:49,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:49,519 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:49,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:41:49,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:41:49,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:49,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2027296678, now seen corresponding path program 1 times [2022-11-03 01:41:49,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:49,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954538648] [2022-11-03 01:41:49,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:49,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4752 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4744 trivial. 0 not checked. [2022-11-03 01:41:50,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954538648] [2022-11-03 01:41:50,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954538648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:50,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:50,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592973495] [2022-11-03 01:41:50,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:50,181 INFO L87 Difference]: Start difference. First operand 9315 states and 13130 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 01:41:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:54,167 INFO L93 Difference]: Finished difference Result 9368 states and 13172 transitions. [2022-11-03 01:41:54,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:54,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 427 [2022-11-03 01:41:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:54,212 INFO L225 Difference]: With dead ends: 9368 [2022-11-03 01:41:54,213 INFO L226 Difference]: Without dead ends: 9366 [2022-11-03 01:41:54,218 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 01:41:54,219 INFO L413 NwaCegarLoop]: 2964 mSDtfsCounter, 3269 mSDsluCounter, 6817 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3282 SdHoareTripleChecker+Valid, 8894 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:54,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3282 Valid, 8894 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-03 01:41:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9366 states. [2022-11-03 01:41:54,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9366 to 9364. [2022-11-03 01:41:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9364 states, 5358 states have (on average 1.2717431877566256) internal successors, (6814), 5611 states have internal predecessors, (6814), 3136 states have call successors, (3136), 883 states have call predecessors, (3136), 867 states have return successors, (3219), 3007 states have call predecessors, (3219), 3132 states have call successors, (3219) [2022-11-03 01:41:54,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9364 states to 9364 states and 13169 transitions. [2022-11-03 01:41:54,935 INFO L78 Accepts]: Start accepts. Automaton has 9364 states and 13169 transitions. Word has length 427 [2022-11-03 01:41:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:54,936 INFO L495 AbstractCegarLoop]: Abstraction has 9364 states and 13169 transitions. [2022-11-03 01:41:54,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-03 01:41:54,937 INFO L276 IsEmpty]: Start isEmpty. Operand 9364 states and 13169 transitions. [2022-11-03 01:41:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2022-11-03 01:41:54,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:54,944 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:54,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:41:54,944 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 01:41:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2143738474, now seen corresponding path program 1 times [2022-11-03 01:41:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:54,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947878310] [2022-11-03 01:41:54,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:54,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4770 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4760 trivial. 0 not checked. [2022-11-03 01:41:55,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:55,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947878310] [2022-11-03 01:41:55,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947878310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:55,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:55,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780027889] [2022-11-03 01:41:55,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:55,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:55,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:55,726 INFO L87 Difference]: Start difference. First operand 9364 states and 13169 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 01:41:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:41:58,075 INFO L93 Difference]: Finished difference Result 9370 states and 13174 transitions. [2022-11-03 01:41:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:41:58,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 432 [2022-11-03 01:41:58,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:41:58,118 INFO L225 Difference]: With dead ends: 9370 [2022-11-03 01:41:58,118 INFO L226 Difference]: Without dead ends: 9368 [2022-11-03 01:41:58,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:41:58,126 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:41:58,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3302 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 01:41:58,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9368 states. [2022-11-03 01:41:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9368 to 9368. [2022-11-03 01:41:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9368 states, 5361 states have (on average 1.271591121059504) internal successors, (6817), 5614 states have internal predecessors, (6817), 3136 states have call successors, (3136), 884 states have call predecessors, (3136), 868 states have return successors, (3219), 3007 states have call predecessors, (3219), 3132 states have call successors, (3219) [2022-11-03 01:41:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9368 states to 9368 states and 13172 transitions. [2022-11-03 01:41:59,127 INFO L78 Accepts]: Start accepts. Automaton has 9368 states and 13172 transitions. Word has length 432 [2022-11-03 01:41:59,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:41:59,128 INFO L495 AbstractCegarLoop]: Abstraction has 9368 states and 13172 transitions. [2022-11-03 01:41:59,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 01:41:59,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9368 states and 13172 transitions. [2022-11-03 01:41:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2022-11-03 01:41:59,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:41:59,137 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:41:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:41:59,137 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 01:41:59,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:41:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1450030618, now seen corresponding path program 1 times [2022-11-03 01:41:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:41:59,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887792121] [2022-11-03 01:41:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:41:59,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:41:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:41:59,784 INFO L134 CoverageAnalysis]: Checked inductivity of 4792 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4780 trivial. 0 not checked. [2022-11-03 01:41:59,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:41:59,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887792121] [2022-11-03 01:41:59,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887792121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:41:59,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:41:59,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:41:59,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197068868] [2022-11-03 01:41:59,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:41:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:41:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:41:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:41:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:41:59,787 INFO L87 Difference]: Start difference. First operand 9368 states and 13172 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:42:02,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:02,363 INFO L93 Difference]: Finished difference Result 9374 states and 13177 transitions. [2022-11-03 01:42:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:02,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 437 [2022-11-03 01:42:02,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:02,409 INFO L225 Difference]: With dead ends: 9374 [2022-11-03 01:42:02,409 INFO L226 Difference]: Without dead ends: 9372 [2022-11-03 01:42:02,415 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 01:42:02,415 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:02,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 01:42:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9372 states. [2022-11-03 01:42:03,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9372 to 9372. [2022-11-03 01:42:03,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9372 states, 5364 states have (on average 1.2714392244593586) internal successors, (6820), 5617 states have internal predecessors, (6820), 3136 states have call successors, (3136), 885 states have call predecessors, (3136), 869 states have return successors, (3219), 3007 states have call predecessors, (3219), 3132 states have call successors, (3219) [2022-11-03 01:42:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9372 states to 9372 states and 13175 transitions. [2022-11-03 01:42:03,077 INFO L78 Accepts]: Start accepts. Automaton has 9372 states and 13175 transitions. Word has length 437 [2022-11-03 01:42:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:03,079 INFO L495 AbstractCegarLoop]: Abstraction has 9372 states and 13175 transitions. [2022-11-03 01:42:03,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 01:42:03,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9372 states and 13175 transitions. [2022-11-03 01:42:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 01:42:03,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:03,102 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:03,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:42:03,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:42:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -377069029, now seen corresponding path program 1 times [2022-11-03 01:42:03,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451943057] [2022-11-03 01:42:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:03,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4793 trivial. 0 not checked. [2022-11-03 01:42:03,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:03,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451943057] [2022-11-03 01:42:03,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451943057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:03,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:03,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:03,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244951057] [2022-11-03 01:42:03,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:03,422 INFO L87 Difference]: Start difference. First operand 9372 states and 13175 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 01:42:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:06,174 INFO L93 Difference]: Finished difference Result 21656 states and 30440 transitions. [2022-11-03 01:42:06,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:06,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 438 [2022-11-03 01:42:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:06,234 INFO L225 Difference]: With dead ends: 21656 [2022-11-03 01:42:06,234 INFO L226 Difference]: Without dead ends: 12655 [2022-11-03 01:42:06,274 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 01:42:06,274 INFO L413 NwaCegarLoop]: 4078 mSDtfsCounter, 3186 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3186 SdHoareTripleChecker+Valid, 7007 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:06,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3186 Valid, 7007 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 01:42:06,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12655 states. [2022-11-03 01:42:07,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12655 to 12594. [2022-11-03 01:42:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12594 states, 7212 states have (on average 1.2720465890183028) internal successors, (9174), 7553 states have internal predecessors, (9174), 4204 states have call successors, (4204), 1196 states have call predecessors, (4204), 1175 states have return successors, (4316), 4029 states have call predecessors, (4316), 4200 states have call successors, (4316) [2022-11-03 01:42:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12594 states to 12594 states and 17694 transitions. [2022-11-03 01:42:07,388 INFO L78 Accepts]: Start accepts. Automaton has 12594 states and 17694 transitions. Word has length 438 [2022-11-03 01:42:07,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:07,389 INFO L495 AbstractCegarLoop]: Abstraction has 12594 states and 17694 transitions. [2022-11-03 01:42:07,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 01:42:07,389 INFO L276 IsEmpty]: Start isEmpty. Operand 12594 states and 17694 transitions. [2022-11-03 01:42:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-03 01:42:07,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:07,399 INFO L195 NwaCegarLoop]: trace histogram [38, 34, 34, 34, 34, 34, 34, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:07,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:42:07,399 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 01:42:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:07,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1089924736, now seen corresponding path program 1 times [2022-11-03 01:42:07,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:07,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002495755] [2022-11-03 01:42:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:07,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4800 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4793 trivial. 0 not checked. [2022-11-03 01:42:07,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:07,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002495755] [2022-11-03 01:42:07,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002495755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:07,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:07,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:07,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502818831] [2022-11-03 01:42:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:07,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:07,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:07,711 INFO L87 Difference]: Start difference. First operand 12594 states and 17694 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 01:42:10,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:10,797 INFO L93 Difference]: Finished difference Result 28475 states and 39983 transitions. [2022-11-03 01:42:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:10,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) Word has length 439 [2022-11-03 01:42:10,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:10,869 INFO L225 Difference]: With dead ends: 28475 [2022-11-03 01:42:10,869 INFO L226 Difference]: Without dead ends: 16252 [2022-11-03 01:42:10,910 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 01:42:10,911 INFO L413 NwaCegarLoop]: 4089 mSDtfsCounter, 3166 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3166 SdHoareTripleChecker+Valid, 7018 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:10,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3166 Valid, 7018 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:42:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16252 states. [2022-11-03 01:42:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16252 to 16191. [2022-11-03 01:42:12,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16191 states, 9285 states have (on average 1.272697899838449) internal successors, (11817), 9724 states have internal predecessors, (11817), 5378 states have call successors, (5378), 1551 states have call predecessors, (5378), 1525 states have return successors, (5519), 5151 states have call predecessors, (5519), 5374 states have call successors, (5519) [2022-11-03 01:42:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16191 states to 16191 states and 22714 transitions. [2022-11-03 01:42:12,338 INFO L78 Accepts]: Start accepts. Automaton has 16191 states and 22714 transitions. Word has length 439 [2022-11-03 01:42:12,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:12,339 INFO L495 AbstractCegarLoop]: Abstraction has 16191 states and 22714 transitions. [2022-11-03 01:42:12,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (45), 3 states have call predecessors, (45), 3 states have call successors, (45) [2022-11-03 01:42:12,340 INFO L276 IsEmpty]: Start isEmpty. Operand 16191 states and 22714 transitions. [2022-11-03 01:42:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2022-11-03 01:42:12,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:12,348 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 8, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 01:42:12,349 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 01:42:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash 608845738, now seen corresponding path program 1 times [2022-11-03 01:42:12,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313796522] [2022-11-03 01:42:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:12,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4804 trivial. 0 not checked. [2022-11-03 01:42:12,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:12,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313796522] [2022-11-03 01:42:12,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313796522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:12,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988299869] [2022-11-03 01:42:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:12,957 INFO L87 Difference]: Start difference. First operand 16191 states and 22714 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 01:42:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:16,075 INFO L93 Difference]: Finished difference Result 16389 states and 22850 transitions. [2022-11-03 01:42:16,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 442 [2022-11-03 01:42:16,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:16,140 INFO L225 Difference]: With dead ends: 16389 [2022-11-03 01:42:16,140 INFO L226 Difference]: Without dead ends: 16387 [2022-11-03 01:42:16,152 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 01:42:16,152 INFO L413 NwaCegarLoop]: 2962 mSDtfsCounter, 3157 mSDsluCounter, 6932 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3167 SdHoareTripleChecker+Valid, 8985 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:16,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3167 Valid, 8985 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-03 01:42:16,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16387 states. [2022-11-03 01:42:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16387 to 16385. [2022-11-03 01:42:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16385 states, 9398 states have (on average 1.2704830815067036) internal successors, (11940), 9837 states have internal predecessors, (11940), 5383 states have call successors, (5383), 1627 states have call predecessors, (5383), 1601 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:17,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16385 states to 16385 states and 22847 transitions. [2022-11-03 01:42:17,322 INFO L78 Accepts]: Start accepts. Automaton has 16385 states and 22847 transitions. Word has length 442 [2022-11-03 01:42:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:17,323 INFO L495 AbstractCegarLoop]: Abstraction has 16385 states and 22847 transitions. [2022-11-03 01:42:17,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 01:42:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 16385 states and 22847 transitions. [2022-11-03 01:42:17,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2022-11-03 01:42:17,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:17,333 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:42:17,334 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 01:42:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash 933672511, now seen corresponding path program 1 times [2022-11-03 01:42:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:17,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029730987] [2022-11-03 01:42:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:18,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4850 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4834 trivial. 0 not checked. [2022-11-03 01:42:18,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:18,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029730987] [2022-11-03 01:42:18,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029730987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:18,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:18,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439064276] [2022-11-03 01:42:18,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:18,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:18,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:18,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:18,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:18,012 INFO L87 Difference]: Start difference. First operand 16385 states and 22847 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:42:20,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:20,586 INFO L93 Difference]: Finished difference Result 16391 states and 22852 transitions. [2022-11-03 01:42:20,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:20,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 461 [2022-11-03 01:42:20,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:20,644 INFO L225 Difference]: With dead ends: 16391 [2022-11-03 01:42:20,644 INFO L226 Difference]: Without dead ends: 16389 [2022-11-03 01:42:20,652 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 01:42:20,653 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3289 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:20,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3298 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 01:42:20,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16389 states. [2022-11-03 01:42:21,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16389 to 16389. [2022-11-03 01:42:21,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16389 states, 9401 states have (on average 1.2703967663014573) internal successors, (11943), 9840 states have internal predecessors, (11943), 5383 states have call successors, (5383), 1628 states have call predecessors, (5383), 1602 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 22850 transitions. [2022-11-03 01:42:22,000 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 22850 transitions. Word has length 461 [2022-11-03 01:42:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:22,001 INFO L495 AbstractCegarLoop]: Abstraction has 16389 states and 22850 transitions. [2022-11-03 01:42:22,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:42:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 22850 transitions. [2022-11-03 01:42:22,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2022-11-03 01:42:22,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:22,012 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 10, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:22,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:42:22,012 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 01:42:22,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash 640864881, now seen corresponding path program 1 times [2022-11-03 01:42:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:22,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143303287] [2022-11-03 01:42:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4884 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2022-11-03 01:42:22,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:22,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143303287] [2022-11-03 01:42:22,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143303287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:22,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:22,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072274974] [2022-11-03 01:42:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:22,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:22,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:22,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:22,690 INFO L87 Difference]: Start difference. First operand 16389 states and 22850 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:42:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:25,674 INFO L93 Difference]: Finished difference Result 16395 states and 22855 transitions. [2022-11-03 01:42:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 466 [2022-11-03 01:42:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:25,733 INFO L225 Difference]: With dead ends: 16395 [2022-11-03 01:42:25,734 INFO L226 Difference]: Without dead ends: 16393 [2022-11-03 01:42:25,743 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 01:42:25,744 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3289 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:25,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3297 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 01:42:25,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16393 states. [2022-11-03 01:42:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16393 to 16393. [2022-11-03 01:42:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16393 states, 9404 states have (on average 1.2703105061675883) internal successors, (11946), 9843 states have internal predecessors, (11946), 5383 states have call successors, (5383), 1629 states have call predecessors, (5383), 1603 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16393 states to 16393 states and 22853 transitions. [2022-11-03 01:42:26,936 INFO L78 Accepts]: Start accepts. Automaton has 16393 states and 22853 transitions. Word has length 466 [2022-11-03 01:42:26,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:26,937 INFO L495 AbstractCegarLoop]: Abstraction has 16393 states and 22853 transitions. [2022-11-03 01:42:26,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:42:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 16393 states and 22853 transitions. [2022-11-03 01:42:26,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2022-11-03 01:42:26,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:26,949 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:26,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:42:26,950 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 01:42:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1924510106, now seen corresponding path program 1 times [2022-11-03 01:42:26,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:26,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052384849] [2022-11-03 01:42:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:26,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4920 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2022-11-03 01:42:27,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:27,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052384849] [2022-11-03 01:42:27,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052384849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:27,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:27,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60308351] [2022-11-03 01:42:27,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:27,550 INFO L87 Difference]: Start difference. First operand 16393 states and 22853 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 01:42:31,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:31,231 INFO L93 Difference]: Finished difference Result 16399 states and 22858 transitions. [2022-11-03 01:42:31,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:31,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 457 [2022-11-03 01:42:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:31,286 INFO L225 Difference]: With dead ends: 16399 [2022-11-03 01:42:31,287 INFO L226 Difference]: Without dead ends: 16397 [2022-11-03 01:42:31,296 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 01:42:31,297 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3297 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:31,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3297 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 01:42:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16397 states. [2022-11-03 01:42:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16397 to 16397. [2022-11-03 01:42:32,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16397 states, 9407 states have (on average 1.2702243010524077) internal successors, (11949), 9846 states have internal predecessors, (11949), 5383 states have call successors, (5383), 1630 states have call predecessors, (5383), 1604 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:32,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16397 states to 16397 states and 22856 transitions. [2022-11-03 01:42:32,744 INFO L78 Accepts]: Start accepts. Automaton has 16397 states and 22856 transitions. Word has length 457 [2022-11-03 01:42:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:32,745 INFO L495 AbstractCegarLoop]: Abstraction has 16397 states and 22856 transitions. [2022-11-03 01:42:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-03 01:42:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 16397 states and 22856 transitions. [2022-11-03 01:42:32,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-03 01:42:32,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:32,757 INFO L195 NwaCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:32,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:42:32,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:42:32,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:32,758 INFO L85 PathProgramCache]: Analyzing trace with hash 156300879, now seen corresponding path program 1 times [2022-11-03 01:42:32,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:32,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049303257] [2022-11-03 01:42:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4970 trivial. 0 not checked. [2022-11-03 01:42:33,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:33,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049303257] [2022-11-03 01:42:33,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049303257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:33,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:33,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129115650] [2022-11-03 01:42:33,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:33,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:33,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:33,837 INFO L87 Difference]: Start difference. First operand 16397 states and 22856 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:42:37,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:37,548 INFO L93 Difference]: Finished difference Result 16433 states and 22889 transitions. [2022-11-03 01:42:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:42:37,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 455 [2022-11-03 01:42:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:37,618 INFO L225 Difference]: With dead ends: 16433 [2022-11-03 01:42:37,618 INFO L226 Difference]: Without dead ends: 16431 [2022-11-03 01:42:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 01:42:37,631 INFO L413 NwaCegarLoop]: 3482 mSDtfsCounter, 3119 mSDsluCounter, 8942 mSDsCounter, 0 mSdLazyCounter, 1631 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3122 SdHoareTripleChecker+Valid, 11302 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:37,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3122 Valid, 11302 Invalid, 1634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1631 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 01:42:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16431 states. [2022-11-03 01:42:38,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16431 to 16417. [2022-11-03 01:42:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16417 states, 9422 states have (on average 1.2697940989174272) internal successors, (11964), 9861 states have internal predecessors, (11964), 5383 states have call successors, (5383), 1635 states have call predecessors, (5383), 1609 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16417 states to 16417 states and 22871 transitions. [2022-11-03 01:42:38,903 INFO L78 Accepts]: Start accepts. Automaton has 16417 states and 22871 transitions. Word has length 455 [2022-11-03 01:42:38,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:38,903 INFO L495 AbstractCegarLoop]: Abstraction has 16417 states and 22871 transitions. [2022-11-03 01:42:38,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-03 01:42:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 16417 states and 22871 transitions. [2022-11-03 01:42:38,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2022-11-03 01:42:38,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:38,915 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 12, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 01:42:38,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:42:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2116720086, now seen corresponding path program 1 times [2022-11-03 01:42:38,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:38,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690296877] [2022-11-03 01:42:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:39,522 INFO L134 CoverageAnalysis]: Checked inductivity of 4962 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 4940 trivial. 0 not checked. [2022-11-03 01:42:39,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:39,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690296877] [2022-11-03 01:42:39,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690296877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:39,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:39,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:39,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890408177] [2022-11-03 01:42:39,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:39,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:39,524 INFO L87 Difference]: Start difference. First operand 16417 states and 22871 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 01:42:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:43,915 INFO L93 Difference]: Finished difference Result 16423 states and 22876 transitions. [2022-11-03 01:42:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 462 [2022-11-03 01:42:43,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:43,972 INFO L225 Difference]: With dead ends: 16423 [2022-11-03 01:42:43,972 INFO L226 Difference]: Without dead ends: 16421 [2022-11-03 01:42:43,980 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 01:42:43,980 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:43,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3296 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 01:42:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16421 states. [2022-11-03 01:42:45,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16421 to 16421. [2022-11-03 01:42:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16421 states, 9425 states have (on average 1.2697082228116712) internal successors, (11967), 9864 states have internal predecessors, (11967), 5383 states have call successors, (5383), 1636 states have call predecessors, (5383), 1610 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:45,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16421 states to 16421 states and 22874 transitions. [2022-11-03 01:42:45,222 INFO L78 Accepts]: Start accepts. Automaton has 16421 states and 22874 transitions. Word has length 462 [2022-11-03 01:42:45,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:45,222 INFO L495 AbstractCegarLoop]: Abstraction has 16421 states and 22874 transitions. [2022-11-03 01:42:45,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-03 01:42:45,223 INFO L276 IsEmpty]: Start isEmpty. Operand 16421 states and 22874 transitions. [2022-11-03 01:42:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2022-11-03 01:42:45,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:45,235 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 13, 12, 12, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:45,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 01:42:45,235 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 01:42:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 413496383, now seen corresponding path program 1 times [2022-11-03 01:42:45,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302749298] [2022-11-03 01:42:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:45,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:45,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5010 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4986 trivial. 0 not checked. [2022-11-03 01:42:45,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:45,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302749298] [2022-11-03 01:42:45,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302749298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:45,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:45,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:45,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630745172] [2022-11-03 01:42:45,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:45,845 INFO L87 Difference]: Start difference. First operand 16421 states and 22874 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 01:42:49,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:49,001 INFO L93 Difference]: Finished difference Result 16427 states and 22879 transitions. [2022-11-03 01:42:49,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:49,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 481 [2022-11-03 01:42:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:49,067 INFO L225 Difference]: With dead ends: 16427 [2022-11-03 01:42:49,067 INFO L226 Difference]: Without dead ends: 16425 [2022-11-03 01:42:49,072 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 01:42:49,073 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3289 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:49,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 01:42:49,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16425 states. [2022-11-03 01:42:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16425 to 16425. [2022-11-03 01:42:50,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16425 states, 9428 states have (on average 1.269622401357658) internal successors, (11970), 9867 states have internal predecessors, (11970), 5383 states have call successors, (5383), 1637 states have call predecessors, (5383), 1611 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16425 states to 16425 states and 22877 transitions. [2022-11-03 01:42:50,423 INFO L78 Accepts]: Start accepts. Automaton has 16425 states and 22877 transitions. Word has length 481 [2022-11-03 01:42:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:50,423 INFO L495 AbstractCegarLoop]: Abstraction has 16425 states and 22877 transitions. [2022-11-03 01:42:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-03 01:42:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 16425 states and 22877 transitions. [2022-11-03 01:42:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2022-11-03 01:42:50,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:50,432 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 14, 13, 13, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:50,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 01:42:50,433 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 01:42:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:50,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1066217322, now seen corresponding path program 1 times [2022-11-03 01:42:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:50,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463319308] [2022-11-03 01:42:50,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:50,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:51,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5058 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 5032 trivial. 0 not checked. [2022-11-03 01:42:51,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:51,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463319308] [2022-11-03 01:42:51,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463319308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:51,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:51,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:42:51,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124502911] [2022-11-03 01:42:51,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:51,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:42:51,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:42:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:42:51,035 INFO L87 Difference]: Start difference. First operand 16425 states and 22877 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 01:42:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:55,088 INFO L93 Difference]: Finished difference Result 16431 states and 22882 transitions. [2022-11-03 01:42:55,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:42:55,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 472 [2022-11-03 01:42:55,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:55,139 INFO L225 Difference]: With dead ends: 16431 [2022-11-03 01:42:55,139 INFO L226 Difference]: Without dead ends: 16429 [2022-11-03 01:42:55,151 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 01:42:55,152 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:55,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:42:55,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16429 states. [2022-11-03 01:42:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16429 to 16429. [2022-11-03 01:42:56,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16429 states, 9431 states have (on average 1.269536634503234) internal successors, (11973), 9870 states have internal predecessors, (11973), 5383 states have call successors, (5383), 1638 states have call predecessors, (5383), 1612 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:42:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16429 states to 16429 states and 22880 transitions. [2022-11-03 01:42:56,497 INFO L78 Accepts]: Start accepts. Automaton has 16429 states and 22880 transitions. Word has length 472 [2022-11-03 01:42:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 16429 states and 22880 transitions. [2022-11-03 01:42:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2022-11-03 01:42:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16429 states and 22880 transitions. [2022-11-03 01:42:56,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2022-11-03 01:42:56,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:56,508 INFO L195 NwaCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:56,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 01:42:56,508 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:42:56,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:56,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1425461334, now seen corresponding path program 1 times [2022-11-03 01:42:56,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:56,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609741663] [2022-11-03 01:42:56,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4979 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4979 trivial. 0 not checked. [2022-11-03 01:42:56,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609741663] [2022-11-03 01:42:56,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609741663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:56,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:56,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317294716] [2022-11-03 01:42:56,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:56,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:56,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:56,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:56,855 INFO L87 Difference]: Start difference. First operand 16429 states and 22880 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 01:42:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:59,703 INFO L93 Difference]: Finished difference Result 32542 states and 45815 transitions. [2022-11-03 01:42:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 474 [2022-11-03 01:42:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:59,765 INFO L225 Difference]: With dead ends: 32542 [2022-11-03 01:42:59,765 INFO L226 Difference]: Without dead ends: 16484 [2022-11-03 01:42:59,818 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 01:42:59,819 INFO L413 NwaCegarLoop]: 2962 mSDtfsCounter, 3 mSDsluCounter, 3394 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5917 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:59,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5917 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-03 01:42:59,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16484 states. [2022-11-03 01:43:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16484 to 16434. [2022-11-03 01:43:01,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16434 states, 9436 states have (on average 1.2693938109368377) internal successors, (11978), 9875 states have internal predecessors, (11978), 5383 states have call successors, (5383), 1638 states have call predecessors, (5383), 1612 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:43:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16434 states to 16434 states and 22885 transitions. [2022-11-03 01:43:01,379 INFO L78 Accepts]: Start accepts. Automaton has 16434 states and 22885 transitions. Word has length 474 [2022-11-03 01:43:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:01,380 INFO L495 AbstractCegarLoop]: Abstraction has 16434 states and 22885 transitions. [2022-11-03 01:43:01,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 01:43:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 16434 states and 22885 transitions. [2022-11-03 01:43:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2022-11-03 01:43:01,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:01,393 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 15, 14, 14, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:43:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 01:43:01,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 01:43:01,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -496905498, now seen corresponding path program 1 times [2022-11-03 01:43:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:01,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070529125] [2022-11-03 01:43:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:01,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5084 trivial. 0 not checked. [2022-11-03 01:43:01,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:01,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070529125] [2022-11-03 01:43:01,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070529125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:01,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:43:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524653305] [2022-11-03 01:43:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:43:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:43:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:43:01,942 INFO L87 Difference]: Start difference. First operand 16434 states and 22885 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:43:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:06,102 INFO L93 Difference]: Finished difference Result 16440 states and 22890 transitions. [2022-11-03 01:43:06,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:43:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 477 [2022-11-03 01:43:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:06,155 INFO L225 Difference]: With dead ends: 16440 [2022-11-03 01:43:06,155 INFO L226 Difference]: Without dead ends: 16438 [2022-11-03 01:43:06,162 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 01:43:06,163 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3293 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3293 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 01:43:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16438 states. [2022-11-03 01:43:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16438 to 16438. [2022-11-03 01:43:07,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16438 states, 9439 states have (on average 1.269308189426846) internal successors, (11981), 9878 states have internal predecessors, (11981), 5383 states have call successors, (5383), 1639 states have call predecessors, (5383), 1613 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:43:07,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16438 states to 16438 states and 22888 transitions. [2022-11-03 01:43:07,563 INFO L78 Accepts]: Start accepts. Automaton has 16438 states and 22888 transitions. Word has length 477 [2022-11-03 01:43:07,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:07,563 INFO L495 AbstractCegarLoop]: Abstraction has 16438 states and 22888 transitions. [2022-11-03 01:43:07,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2022-11-03 01:43:07,564 INFO L276 IsEmpty]: Start isEmpty. Operand 16438 states and 22888 transitions. [2022-11-03 01:43:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-03 01:43:07,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:07,573 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 16, 15, 15, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:43:07,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 01:43:07,574 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 01:43:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash -575597398, now seen corresponding path program 1 times [2022-11-03 01:43:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:07,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375175526] [2022-11-03 01:43:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5170 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2022-11-03 01:43:08,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375175526] [2022-11-03 01:43:08,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375175526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:08,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:43:08,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81083158] [2022-11-03 01:43:08,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:08,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:43:08,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:43:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:43:08,193 INFO L87 Difference]: Start difference. First operand 16438 states and 22888 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:43:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:11,367 INFO L93 Difference]: Finished difference Result 16444 states and 22893 transitions. [2022-11-03 01:43:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:43:11,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 482 [2022-11-03 01:43:11,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:11,431 INFO L225 Difference]: With dead ends: 16444 [2022-11-03 01:43:11,431 INFO L226 Difference]: Without dead ends: 16442 [2022-11-03 01:43:11,443 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 01:43:11,444 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3290 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3292 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:11,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3292 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-03 01:43:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16442 states. [2022-11-03 01:43:12,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16442 to 16442. [2022-11-03 01:43:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16442 states, 9442 states have (on average 1.2692226223257785) internal successors, (11984), 9881 states have internal predecessors, (11984), 5383 states have call successors, (5383), 1640 states have call predecessors, (5383), 1614 states have return successors, (5524), 5156 states have call predecessors, (5524), 5379 states have call successors, (5524) [2022-11-03 01:43:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16442 states to 16442 states and 22891 transitions. [2022-11-03 01:43:12,972 INFO L78 Accepts]: Start accepts. Automaton has 16442 states and 22891 transitions. Word has length 482 [2022-11-03 01:43:12,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:12,973 INFO L495 AbstractCegarLoop]: Abstraction has 16442 states and 22891 transitions. [2022-11-03 01:43:12,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2022-11-03 01:43:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16442 states and 22891 transitions. [2022-11-03 01:43:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2022-11-03 01:43:12,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:12,983 INFO L195 NwaCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:43:12,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 01:43:12,983 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:43:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1995685088, now seen corresponding path program 1 times [2022-11-03 01:43:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:12,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739707597] [2022-11-03 01:43:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:12,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 4980 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4979 trivial. 0 not checked. [2022-11-03 01:43:13,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739707597] [2022-11-03 01:43:13,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739707597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:43:13,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656315641] [2022-11-03 01:43:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:13,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:13,406 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:43:13,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:43:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:14,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 3360 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:43:14,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:43:14,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4980 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 4875 trivial. 0 not checked. [2022-11-03 01:43:14,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:43:14,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656315641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:14,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:43:14,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-03 01:43:14,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697837930] [2022-11-03 01:43:14,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:14,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:43:14,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:14,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:43:14,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:43:14,906 INFO L87 Difference]: Start difference. First operand 16442 states and 22891 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 01:43:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:23,818 INFO L93 Difference]: Finished difference Result 36296 states and 50501 transitions. [2022-11-03 01:43:23,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:43:23,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 480 [2022-11-03 01:43:23,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:23,880 INFO L225 Difference]: With dead ends: 36296 [2022-11-03 01:43:23,880 INFO L226 Difference]: Without dead ends: 20225 [2022-11-03 01:43:23,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 479 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:43:23,924 INFO L413 NwaCegarLoop]: 5724 mSDtfsCounter, 3222 mSDsluCounter, 8321 mSDsCounter, 0 mSdLazyCounter, 3754 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 12805 SdHoareTripleChecker+Invalid, 3761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:23,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3222 Valid, 12805 Invalid, 3761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3754 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-03 01:43:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20225 states. [2022-11-03 01:43:25,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20225 to 20128. [2022-11-03 01:43:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20128 states, 11579 states have (on average 1.2704896795923655) internal successors, (14711), 12115 states have internal predecessors, (14711), 6562 states have call successors, (6562), 2015 states have call predecessors, (6562), 1984 states have return successors, (6732), 6284 states have call predecessors, (6732), 6558 states have call successors, (6732) [2022-11-03 01:43:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20128 states to 20128 states and 28005 transitions. [2022-11-03 01:43:26,045 INFO L78 Accepts]: Start accepts. Automaton has 20128 states and 28005 transitions. Word has length 480 [2022-11-03 01:43:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:26,045 INFO L495 AbstractCegarLoop]: Abstraction has 20128 states and 28005 transitions. [2022-11-03 01:43:26,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 01:43:26,045 INFO L276 IsEmpty]: Start isEmpty. Operand 20128 states and 28005 transitions. [2022-11-03 01:43:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2022-11-03 01:43:26,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:26,066 INFO L195 NwaCegarLoop]: trace histogram [40, 34, 34, 34, 34, 34, 34, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:43:26,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:43:26,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 01:43:26,283 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:43:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1656603942, now seen corresponding path program 1 times [2022-11-03 01:43:26,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:26,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935929944] [2022-11-03 01:43:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:26,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4981 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4980 trivial. 0 not checked. [2022-11-03 01:43:26,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:26,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935929944] [2022-11-03 01:43:26,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935929944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:43:26,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932273281] [2022-11-03 01:43:26,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:26,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:26,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:43:26,776 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:43:26,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:43:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:28,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 3362 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:43:28,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:43:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4981 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 4875 trivial. 0 not checked. [2022-11-03 01:43:28,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:43:28,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932273281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:28,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:43:28,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-03 01:43:28,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881727926] [2022-11-03 01:43:28,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:28,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:43:28,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:28,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:43:28,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:43:28,157 INFO L87 Difference]: Start difference. First operand 20128 states and 28005 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 01:43:36,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:36,044 INFO L93 Difference]: Finished difference Result 44035 states and 61215 transitions. [2022-11-03 01:43:36,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:43:36,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 482 [2022-11-03 01:43:36,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:36,126 INFO L225 Difference]: With dead ends: 44035 [2022-11-03 01:43:36,126 INFO L226 Difference]: Without dead ends: 24278 [2022-11-03 01:43:36,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:43:36,174 INFO L413 NwaCegarLoop]: 5724 mSDtfsCounter, 3231 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 3287 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 9866 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:36,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3231 Valid, 9866 Invalid, 3299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3287 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 01:43:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24278 states. [2022-11-03 01:43:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24278 to 24181. [2022-11-03 01:43:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24181 states, 13933 states have (on average 1.2710112682121582) internal successors, (17709), 14576 states have internal predecessors, (17709), 7846 states have call successors, (7846), 2435 states have call predecessors, (7846), 2399 states have return successors, (8045), 7511 states have call predecessors, (8045), 7842 states have call successors, (8045) [2022-11-03 01:43:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24181 states to 24181 states and 33600 transitions. [2022-11-03 01:43:38,786 INFO L78 Accepts]: Start accepts. Automaton has 24181 states and 33600 transitions. Word has length 482 [2022-11-03 01:43:38,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:38,786 INFO L495 AbstractCegarLoop]: Abstraction has 24181 states and 33600 transitions. [2022-11-03 01:43:38,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-03 01:43:38,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24181 states and 33600 transitions. [2022-11-03 01:43:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-11-03 01:43:38,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:38,799 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 17, 16, 16, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:38,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 01:43:39,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8319521f-0921-43a1-9b37-fadfad90d1f3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:43:39,026 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 01:43:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -504892865, now seen corresponding path program 1 times [2022-11-03 01:43:39,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:39,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480594616] [2022-11-03 01:43:39,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:39,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5234 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5202 trivial. 0 not checked. [2022-11-03 01:43:39,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:39,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480594616] [2022-11-03 01:43:39,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480594616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:39,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:39,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:43:39,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913316051] [2022-11-03 01:43:39,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:39,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:43:39,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:39,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:43:39,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:43:39,592 INFO L87 Difference]: Start difference. First operand 24181 states and 33600 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 01:43:44,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:44,104 INFO L93 Difference]: Finished difference Result 24187 states and 33605 transitions. [2022-11-03 01:43:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:43:44,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 501 [2022-11-03 01:43:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:44,167 INFO L225 Difference]: With dead ends: 24187 [2022-11-03 01:43:44,167 INFO L226 Difference]: Without dead ends: 24183 [2022-11-03 01:43:44,173 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 01:43:44,173 INFO L413 NwaCegarLoop]: 2961 mSDtfsCounter, 3289 mSDsluCounter, 6777 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 8858 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:44,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3290 Valid, 8858 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 01:43:44,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24183 states. [2022-11-03 01:43:46,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24183 to 24183. [2022-11-03 01:43:46,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24183 states, 13935 states have (on average 1.2709006099748834) internal successors, (17710), 14577 states have internal predecessors, (17710), 7846 states have call successors, (7846), 2436 states have call predecessors, (7846), 2399 states have return successors, (8045), 7511 states have call predecessors, (8045), 7842 states have call successors, (8045) [2022-11-03 01:43:46,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24183 states to 24183 states and 33601 transitions. [2022-11-03 01:43:46,588 INFO L78 Accepts]: Start accepts. Automaton has 24183 states and 33601 transitions. Word has length 501 [2022-11-03 01:43:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:46,589 INFO L495 AbstractCegarLoop]: Abstraction has 24183 states and 33601 transitions. [2022-11-03 01:43:46,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2022-11-03 01:43:46,589 INFO L276 IsEmpty]: Start isEmpty. Operand 24183 states and 33601 transitions. [2022-11-03 01:43:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-03 01:43:46,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:46,598 INFO L195 NwaCegarLoop]: trace histogram [37, 34, 34, 34, 34, 34, 34, 18, 17, 17, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:46,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 01:43:46,598 INFO L420 AbstractCegarLoop]: === Iteration 27 === 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 01:43:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 2035727844, now seen corresponding path program 1 times [2022-11-03 01:43:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015254153] [2022-11-03 01:43:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 5301 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 5267 trivial. 0 not checked. [2022-11-03 01:43:47,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:47,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015254153] [2022-11-03 01:43:47,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015254153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:47,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:47,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:43:47,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069254089] [2022-11-03 01:43:47,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:47,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:43:47,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:43:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:43:47,065 INFO L87 Difference]: Start difference. First operand 24183 states and 33601 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 01:43:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:43:52,626 INFO L93 Difference]: Finished difference Result 24183 states and 33601 transitions. [2022-11-03 01:43:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:43:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 507 [2022-11-03 01:43:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:43:52,685 INFO L225 Difference]: With dead ends: 24183 [2022-11-03 01:43:52,685 INFO L226 Difference]: Without dead ends: 23738 [2022-11-03 01:43:52,693 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 01:43:52,693 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 3285 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 8855 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:43:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 8855 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 01:43:52,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2022-11-03 01:43:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 23738. [2022-11-03 01:43:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23738 states, 13753 states have (on average 1.2709954191812696) internal successors, (17480), 14347 states have internal predecessors, (17480), 7665 states have call successors, (7665), 2353 states have call predecessors, (7665), 2318 states have return successors, (7868), 7379 states have call predecessors, (7868), 7665 states have call successors, (7868) [2022-11-03 01:43:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23738 states to 23738 states and 33013 transitions. [2022-11-03 01:43:55,360 INFO L78 Accepts]: Start accepts. Automaton has 23738 states and 33013 transitions. Word has length 507 [2022-11-03 01:43:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:43:55,361 INFO L495 AbstractCegarLoop]: Abstraction has 23738 states and 33013 transitions. [2022-11-03 01:43:55,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-03 01:43:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 23738 states and 33013 transitions. [2022-11-03 01:43:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-11-03 01:43:55,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:43:55,388 INFO L195 NwaCegarLoop]: trace histogram [42, 34, 34, 34, 34, 34, 34, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 01:43:55,388 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 01:43:55,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:43:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash 302961141, now seen corresponding path program 1 times [2022-11-03 01:43:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:43:55,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042773186] [2022-11-03 01:43:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:43:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:43:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:43:55,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5171 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 5142 trivial. 0 not checked. [2022-11-03 01:43:55,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:43:55,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042773186] [2022-11-03 01:43:55,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042773186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:43:55,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:43:55,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:43:55,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166745956] [2022-11-03 01:43:55,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:43:55,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:43:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:43:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:43:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:43:55,821 INFO L87 Difference]: Start difference. First operand 23738 states and 33013 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (57), 2 states have call predecessors, (57), 2 states have return successors, (53), 4 states have call predecessors, (53), 3 states have call successors, (53)