./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/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_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/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_60c1c587-8873-4faa-9788-832274455390/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 d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 --- 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 03:27:58,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:27:58,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:27:58,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:27:58,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:27:58,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:27:58,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:27:58,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:27:58,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:27:58,205 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:27:58,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:27:58,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:27:58,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:27:58,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:27:58,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:27:58,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:27:58,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:27:58,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:27:58,214 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:27:58,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:27:58,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:27:58,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:27:58,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:27:58,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:27:58,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:27:58,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:27:58,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:27:58,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:27:58,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:27:58,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:27:58,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:27:58,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:27:58,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:27:58,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:27:58,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:27:58,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:27:58,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:27:58,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:27:58,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:27:58,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:27:58,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:27:58,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:27:58,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:27:58,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:27:58,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:27:58,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:27:58,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:27:58,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:27:58,284 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:27:58,284 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:27:58,285 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:27:58,285 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:27:58,295 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:27:58,295 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:27:58,295 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:27:58,296 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:27:58,296 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:27:58,296 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:27:58,296 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:27:58,297 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:27:58,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:27:58,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:27:58,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:27:58,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:27:58,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:27:58,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:27:58,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:27:58,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:27:58,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:27:58,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:27:58,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:27:58,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:27:58,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:27:58,301 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:27:58,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:27:58,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:27:58,302 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:27:58,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:27:58,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:27:58,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:27:58,303 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_60c1c587-8873-4faa-9788-832274455390/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2022-11-03 03:27:58,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:27:58,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:27:58,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:27:58,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:27:58,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:27:58,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-03 03:27:58,672 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/data/79398a385/9e28aaef907a451a88397b62f8e08c56/FLAGb1ce5a090 [2022-11-03 03:27:59,645 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:27:59,647 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-03 03:27:59,711 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/data/79398a385/9e28aaef907a451a88397b62f8e08c56/FLAGb1ce5a090 [2022-11-03 03:28:00,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/data/79398a385/9e28aaef907a451a88397b62f8e08c56 [2022-11-03 03:28:00,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:28:00,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:28:00,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:00,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:28:00,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:28:00,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:00" (1/1) ... [2022-11-03 03:28:00,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6295c556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:00, skipping insertion in model container [2022-11-03 03:28:00,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:28:00" (1/1) ... [2022-11-03 03:28:00,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:28:00,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:28:03,319 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2022-11-03 03:28:03,323 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2022-11-03 03:28:03,324 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2022-11-03 03:28:03,331 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2022-11-03 03:28:03,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:03,436 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:28:03,884 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349228,349241] [2022-11-03 03:28:03,884 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349397,349410] [2022-11-03 03:28:03,885 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349564,349577] [2022-11-03 03:28:03,885 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_60c1c587-8873-4faa-9788-832274455390/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i[349732,349745] [2022-11-03 03:28:03,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:28:04,183 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:28:04,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04 WrapperNode [2022-11-03 03:28:04,184 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:28:04,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:04,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:28:04,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:28:04,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,310 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,512 INFO L138 Inliner]: procedures = 470, calls = 2162, calls flagged for inlining = 234, calls inlined = 217, statements flattened = 5446 [2022-11-03 03:28:04,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:28:04,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:28:04,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:28:04,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:28:04,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,816 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:28:04,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:28:04,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:28:04,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:28:04,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (1/1) ... [2022-11-03 03:28:04,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:28:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:28:04,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:28:04,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60c1c587-8873-4faa-9788-832274455390/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:28:04,998 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-11-03 03:28:05,001 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-11-03 03:28:05,001 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-03 03:28:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-03 03:28:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 03:28:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 03:28:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 03:28:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 03:28:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-03 03:28:05,002 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-03 03:28:05,002 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 03:28:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 03:28:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 03:28:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 03:28:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:28:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 03:28:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 03:28:05,003 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 03:28:05,003 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-03 03:28:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-03 03:28:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-03 03:28:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-03 03:28:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2022-11-03 03:28:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2022-11-03 03:28:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-11-03 03:28:05,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-11-03 03:28:05,004 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2022-11-03 03:28:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2022-11-03 03:28:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-03 03:28:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-03 03:28:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 03:28:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 03:28:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 03:28:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 03:28:05,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 03:28:05,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 03:28:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 03:28:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 03:28:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-03 03:28:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-03 03:28:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 03:28:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 03:28:05,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 03:28:05,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 03:28:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 03:28:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 03:28:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:28:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2022-11-03 03:28:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2022-11-03 03:28:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 03:28:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 03:28:05,007 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-03 03:28:05,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-03 03:28:05,008 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 03:28:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 03:28:05,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 03:28:05,008 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 03:28:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 03:28:05,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-03 03:28:05,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-03 03:28:05,008 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 03:28:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 03:28:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 03:28:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 03:28:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 03:28:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:28:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-03 03:28:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-03 03:28:05,009 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 03:28:05,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 03:28:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 03:28:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 03:28:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 03:28:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 03:28:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2022-11-03 03:28:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2022-11-03 03:28:05,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 03:28:05,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 03:28:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-03 03:28:05,011 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-03 03:28:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 03:28:05,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 03:28:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2022-11-03 03:28:05,011 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2022-11-03 03:28:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2022-11-03 03:28:05,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2022-11-03 03:28:05,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:28:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 03:28:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 03:28:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-03 03:28:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-03 03:28:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 03:28:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 03:28:05,012 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-03 03:28:05,012 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 03:28:05,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 03:28:05,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-03 03:28:05,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-03 03:28:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 03:28:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-03 03:28:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-03 03:28:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-03 03:28:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-03 03:28:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:28:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 03:28:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 03:28:05,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 03:28:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 03:28:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 03:28:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 03:28:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 03:28:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 03:28:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 03:28:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2022-11-03 03:28:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2022-11-03 03:28:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-03 03:28:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-03 03:28:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:28:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:28:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-03 03:28:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-03 03:28:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 03:28:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 03:28:05,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 03:28:05,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 03:28:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-03 03:28:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-03 03:28:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:28:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 03:28:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2022-11-03 03:28:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2022-11-03 03:28:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2022-11-03 03:28:05,017 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2022-11-03 03:28:05,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 03:28:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 03:28:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2022-11-03 03:28:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2022-11-03 03:28:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 03:28:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-03 03:28:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 03:28:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 03:28:05,018 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 03:28:05,018 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 03:28:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-03 03:28:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-03 03:28:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-03 03:28:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-03 03:28:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 03:28:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 03:28:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:28:05,019 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 03:28:05,019 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2022-11-03 03:28:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-03 03:28:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-03 03:28:05,020 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 03:28:05,020 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2022-11-03 03:28:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2022-11-03 03:28:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-03 03:28:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-03 03:28:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 03:28:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 03:28:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 03:28:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-03 03:28:05,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 03:28:05,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 03:28:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 03:28:05,022 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 03:28:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-03 03:28:05,022 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-03 03:28:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-03 03:28:05,022 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-03 03:28:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2022-11-03 03:28:05,022 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2022-11-03 03:28:05,022 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 03:28:05,023 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 03:28:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 03:28:05,023 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 03:28:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 03:28:05,023 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 03:28:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 03:28:05,023 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 03:28:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 03:28:05,023 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 03:28:05,023 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2022-11-03 03:28:05,024 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2022-11-03 03:28:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2022-11-03 03:28:05,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2022-11-03 03:28:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:28:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 03:28:05,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 03:28:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-03 03:28:05,024 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-03 03:28:05,024 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2022-11-03 03:28:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2022-11-03 03:28:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 03:28:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 03:28:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 03:28:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 03:28:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 03:28:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 03:28:05,025 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-03 03:28:05,025 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-03 03:28:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:28:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 03:28:05,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 03:28:05,026 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-03 03:28:05,026 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-03 03:28:05,987 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:28:05,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:28:06,623 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 03:29:36,340 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 03:29:36,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:29:38,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:29:38,630 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-03 03:29:38,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:38 BoogieIcfgContainer [2022-11-03 03:29:38,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:29:38,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:29:38,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:29:38,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:29:38,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:28:00" (1/3) ... [2022-11-03 03:29:38,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ae1e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:38, skipping insertion in model container [2022-11-03 03:29:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:28:04" (2/3) ... [2022-11-03 03:29:38,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ae1e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:38, skipping insertion in model container [2022-11-03 03:29:38,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:38" (3/3) ... [2022-11-03 03:29:38,653 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-03 03:29:38,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:29:38,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 03:29:38,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:29:38,835 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;@e031b2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:29:38,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 03:29:38,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 1433 states, 823 states have (on average 1.2843256379100851) internal successors, (1057), 861 states have internal predecessors, (1057), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) [2022-11-03 03:29:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 03:29:38,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:38,891 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:38,891 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 03:29:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -147284711, now seen corresponding path program 1 times [2022-11-03 03:29:38,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:38,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401324457] [2022-11-03 03:29:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:38,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 03:29:40,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401324457] [2022-11-03 03:29:40,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401324457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:40,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:40,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:40,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673810139] [2022-11-03 03:29:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:40,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:40,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:40,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:40,734 INFO L87 Difference]: Start difference. First operand has 1433 states, 823 states have (on average 1.2843256379100851) internal successors, (1057), 861 states have internal predecessors, (1057), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 498 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 03:29:42,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:48,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:50,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:51,142 INFO L93 Difference]: Finished difference Result 4097 states and 6022 transitions. [2022-11-03 03:29:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 151 [2022-11-03 03:29:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:51,210 INFO L225 Difference]: With dead ends: 4097 [2022-11-03 03:29:51,211 INFO L226 Difference]: Without dead ends: 2681 [2022-11-03 03:29:51,228 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 03:29:51,232 INFO L413 NwaCegarLoop]: 2194 mSDtfsCounter, 1840 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 3913 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:51,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 3913 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-03 03:29:51,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-11-03 03:29:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2676. [2022-11-03 03:29:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2676 states, 1542 states have (on average 1.2782101167315174) internal successors, (1971), 1608 states have internal predecessors, (1971), 936 states have call successors, (936), 196 states have call predecessors, (936), 195 states have return successors, (932), 917 states have call predecessors, (932), 932 states have call successors, (932) [2022-11-03 03:29:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2676 states to 2676 states and 3839 transitions. [2022-11-03 03:29:51,536 INFO L78 Accepts]: Start accepts. Automaton has 2676 states and 3839 transitions. Word has length 151 [2022-11-03 03:29:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:51,538 INFO L495 AbstractCegarLoop]: Abstraction has 2676 states and 3839 transitions. [2022-11-03 03:29:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 03:29:51,539 INFO L276 IsEmpty]: Start isEmpty. Operand 2676 states and 3839 transitions. [2022-11-03 03:29:51,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 03:29:51,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:51,545 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:29:51,546 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 03:29:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1126243917, now seen corresponding path program 1 times [2022-11-03 03:29:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:51,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352484066] [2022-11-03 03:29:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 03:29:52,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:52,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352484066] [2022-11-03 03:29:52,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352484066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:52,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:52,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:52,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971650458] [2022-11-03 03:29:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:52,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:52,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:52,435 INFO L87 Difference]: Start difference. First operand 2676 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 03:29:54,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:29:58,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:02,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:02,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:02,931 INFO L93 Difference]: Finished difference Result 7558 states and 10792 transitions. [2022-11-03 03:30:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2022-11-03 03:30:02,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:02,978 INFO L225 Difference]: With dead ends: 7558 [2022-11-03 03:30:02,978 INFO L226 Difference]: Without dead ends: 4909 [2022-11-03 03:30:02,996 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 03:30:02,997 INFO L413 NwaCegarLoop]: 2152 mSDtfsCounter, 1627 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:02,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 3827 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 616 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 03:30:03,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2022-11-03 03:30:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4879. [2022-11-03 03:30:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4879 states, 2789 states have (on average 1.263535317318035) internal successors, (3524), 2916 states have internal predecessors, (3524), 1709 states have call successors, (1709), 381 states have call predecessors, (1709), 378 states have return successors, (1711), 1667 states have call predecessors, (1711), 1705 states have call successors, (1711) [2022-11-03 03:30:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6944 transitions. [2022-11-03 03:30:03,337 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6944 transitions. Word has length 159 [2022-11-03 03:30:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:03,339 INFO L495 AbstractCegarLoop]: Abstraction has 4879 states and 6944 transitions. [2022-11-03 03:30:03,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 03:30:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6944 transitions. [2022-11-03 03:30:03,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 03:30:03,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:03,349 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:03,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:30:03,350 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 03:30:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:03,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1707911413, now seen corresponding path program 1 times [2022-11-03 03:30:03,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:03,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893158134] [2022-11-03 03:30:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-03 03:30:04,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:04,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893158134] [2022-11-03 03:30:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893158134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:04,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:04,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205576385] [2022-11-03 03:30:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:04,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:04,286 INFO L87 Difference]: Start difference. First operand 4879 states and 6944 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:30:06,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:11,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:14,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:14,868 INFO L93 Difference]: Finished difference Result 14320 states and 20394 transitions. [2022-11-03 03:30:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 174 [2022-11-03 03:30:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:14,973 INFO L225 Difference]: With dead ends: 14320 [2022-11-03 03:30:14,973 INFO L226 Difference]: Without dead ends: 9468 [2022-11-03 03:30:15,010 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 03:30:15,013 INFO L413 NwaCegarLoop]: 2403 mSDtfsCounter, 1886 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 4070 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:15,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 4070 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 648 Invalid, 3 Unknown, 0 Unchecked, 10.1s Time] [2022-11-03 03:30:15,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9468 states. [2022-11-03 03:30:15,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9468 to 9433. [2022-11-03 03:30:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9433 states, 5401 states have (on average 1.2645806332160712) internal successors, (6830), 5664 states have internal predecessors, (6830), 3285 states have call successors, (3285), 755 states have call predecessors, (3285), 744 states have return successors, (3319), 3179 states have call predecessors, (3319), 3281 states have call successors, (3319) [2022-11-03 03:30:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9433 states to 9433 states and 13434 transitions. [2022-11-03 03:30:15,835 INFO L78 Accepts]: Start accepts. Automaton has 9433 states and 13434 transitions. Word has length 174 [2022-11-03 03:30:15,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:15,838 INFO L495 AbstractCegarLoop]: Abstraction has 9433 states and 13434 transitions. [2022-11-03 03:30:15,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:30:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 9433 states and 13434 transitions. [2022-11-03 03:30:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:30:15,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:15,846 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:15,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:30:15,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:30:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:15,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1529660918, now seen corresponding path program 1 times [2022-11-03 03:30:15,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:15,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719540701] [2022-11-03 03:30:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:15,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:17,910 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-03 03:30:17,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:17,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719540701] [2022-11-03 03:30:17,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719540701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:17,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:17,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:30:17,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488457142] [2022-11-03 03:30:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:17,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:30:17,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:30:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:17,913 INFO L87 Difference]: Start difference. First operand 9433 states and 13434 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:30:20,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:31,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:38,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:38,693 INFO L93 Difference]: Finished difference Result 20336 states and 28760 transitions. [2022-11-03 03:30:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 183 [2022-11-03 03:30:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:38,773 INFO L225 Difference]: With dead ends: 20336 [2022-11-03 03:30:38,774 INFO L226 Difference]: Without dead ends: 10930 [2022-11-03 03:30:38,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:38,824 INFO L413 NwaCegarLoop]: 2920 mSDtfsCounter, 3362 mSDsluCounter, 5359 mSDsCounter, 0 mSdLazyCounter, 3020 mSolverCounterSat, 39 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3464 SdHoareTripleChecker+Valid, 7355 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3020 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:38,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3464 Valid, 7355 Invalid, 3062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 3020 Invalid, 3 Unknown, 0 Unchecked, 19.9s Time] [2022-11-03 03:30:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2022-11-03 03:30:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 10854. [2022-11-03 03:30:39,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10854 states, 6312 states have (on average 1.2629911280101394) internal successors, (7972), 6598 states have internal predecessors, (7972), 3601 states have call successors, (3601), 957 states have call predecessors, (3601), 938 states have return successors, (3616), 3470 states have call predecessors, (3616), 3597 states have call successors, (3616) [2022-11-03 03:30:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10854 states to 10854 states and 15189 transitions. [2022-11-03 03:30:39,561 INFO L78 Accepts]: Start accepts. Automaton has 10854 states and 15189 transitions. Word has length 183 [2022-11-03 03:30:39,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:39,562 INFO L495 AbstractCegarLoop]: Abstraction has 10854 states and 15189 transitions. [2022-11-03 03:30:39,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-03 03:30:39,562 INFO L276 IsEmpty]: Start isEmpty. Operand 10854 states and 15189 transitions. [2022-11-03 03:30:39,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-03 03:30:39,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:39,570 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:39,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:30:39,571 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 03:30:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 25734765, now seen corresponding path program 1 times [2022-11-03 03:30:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:30:39,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614210608] [2022-11-03 03:30:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:30:39,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-03 03:30:41,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:30:41,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614210608] [2022-11-03 03:30:41,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614210608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:41,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:41,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:41,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47285756] [2022-11-03 03:30:41,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:41,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:41,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:30:41,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:41,101 INFO L87 Difference]: Start difference. First operand 10854 states and 15189 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:30:43,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:48,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:50,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:52,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:56,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:30:59,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:00,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:00,023 INFO L93 Difference]: Finished difference Result 21389 states and 29961 transitions. [2022-11-03 03:31:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:31:00,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 193 [2022-11-03 03:31:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:00,153 INFO L225 Difference]: With dead ends: 21389 [2022-11-03 03:31:00,153 INFO L226 Difference]: Without dead ends: 21387 [2022-11-03 03:31:00,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:31:00,172 INFO L413 NwaCegarLoop]: 2215 mSDtfsCounter, 1965 mSDsluCounter, 6973 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 8328 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:00,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 8328 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1165 Invalid, 5 Unknown, 0 Unchecked, 17.9s Time] [2022-11-03 03:31:00,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21387 states. [2022-11-03 03:31:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21387 to 21380. [2022-11-03 03:31:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21380 states, 12421 states have (on average 1.2643909508091136) internal successors, (15705), 12989 states have internal predecessors, (15705), 7110 states have call successors, (7110), 1884 states have call predecessors, (7110), 1846 states have return successors, (7140), 6848 states have call predecessors, (7140), 7102 states have call successors, (7140) [2022-11-03 03:31:01,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21380 states to 21380 states and 29955 transitions. [2022-11-03 03:31:01,803 INFO L78 Accepts]: Start accepts. Automaton has 21380 states and 29955 transitions. Word has length 193 [2022-11-03 03:31:01,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:01,804 INFO L495 AbstractCegarLoop]: Abstraction has 21380 states and 29955 transitions. [2022-11-03 03:31:01,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 03:31:01,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21380 states and 29955 transitions. [2022-11-03 03:31:01,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-03 03:31:01,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:01,811 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:31:01,812 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 03:31:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 291179023, now seen corresponding path program 1 times [2022-11-03 03:31:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:01,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519478598] [2022-11-03 03:31:01,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:01,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-03 03:31:03,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:03,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519478598] [2022-11-03 03:31:03,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519478598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:03,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:03,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:31:03,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072117648] [2022-11-03 03:31:03,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:03,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:31:03,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:31:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:31:03,373 INFO L87 Difference]: Start difference. First operand 21380 states and 29955 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:31:05,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:10,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:12,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:14,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:17,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:21,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:21,635 INFO L93 Difference]: Finished difference Result 21393 states and 29964 transitions. [2022-11-03 03:31:21,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:31:21,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2022-11-03 03:31:21,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:21,743 INFO L225 Difference]: With dead ends: 21393 [2022-11-03 03:31:21,743 INFO L226 Difference]: Without dead ends: 21391 [2022-11-03 03:31:21,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:31:21,760 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 1959 mSDsluCounter, 6973 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 8331 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:21,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 8331 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1166 Invalid, 4 Unknown, 0 Unchecked, 17.3s Time] [2022-11-03 03:31:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21391 states. [2022-11-03 03:31:23,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21391 to 21384. [2022-11-03 03:31:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21384 states, 12424 states have (on average 1.2643271088216355) internal successors, (15708), 12992 states have internal predecessors, (15708), 7110 states have call successors, (7110), 1885 states have call predecessors, (7110), 1847 states have return successors, (7140), 6848 states have call predecessors, (7140), 7102 states have call successors, (7140) [2022-11-03 03:31:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21384 states to 21384 states and 29958 transitions. [2022-11-03 03:31:23,413 INFO L78 Accepts]: Start accepts. Automaton has 21384 states and 29958 transitions. Word has length 201 [2022-11-03 03:31:23,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:23,414 INFO L495 AbstractCegarLoop]: Abstraction has 21384 states and 29958 transitions. [2022-11-03 03:31:23,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 03:31:23,415 INFO L276 IsEmpty]: Start isEmpty. Operand 21384 states and 29958 transitions. [2022-11-03 03:31:23,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-03 03:31:23,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:23,421 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 03:31:23,424 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 03:31:23,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:23,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1975114191, now seen corresponding path program 1 times [2022-11-03 03:31:23,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:23,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295261910] [2022-11-03 03:31:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:23,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-11-03 03:31:24,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:24,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295261910] [2022-11-03 03:31:24,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295261910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:24,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:24,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:31:24,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812035536] [2022-11-03 03:31:24,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:24,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:31:24,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:31:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:31:24,807 INFO L87 Difference]: Start difference. First operand 21384 states and 29958 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:31:26,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:32,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:38,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:39,085 INFO L93 Difference]: Finished difference Result 31872 states and 44653 transitions. [2022-11-03 03:31:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:31:39,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 206 [2022-11-03 03:31:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:39,249 INFO L225 Difference]: With dead ends: 31872 [2022-11-03 03:31:39,250 INFO L226 Difference]: Without dead ends: 31870 [2022-11-03 03:31:39,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:31:39,272 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:39,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 03:31:39,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31870 states. [2022-11-03 03:31:41,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31870 to 31863. [2022-11-03 03:31:41,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31863 states, 18508 states have (on average 1.264750378214826) internal successors, (23408), 19355 states have internal predecessors, (23408), 10597 states have call successors, (10597), 2812 states have call predecessors, (10597), 2755 states have return successors, (10642), 10205 states have call predecessors, (10642), 10585 states have call successors, (10642) [2022-11-03 03:31:41,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31863 states to 31863 states and 44647 transitions. [2022-11-03 03:31:41,400 INFO L78 Accepts]: Start accepts. Automaton has 31863 states and 44647 transitions. Word has length 206 [2022-11-03 03:31:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:41,401 INFO L495 AbstractCegarLoop]: Abstraction has 31863 states and 44647 transitions. [2022-11-03 03:31:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 03:31:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand 31863 states and 44647 transitions. [2022-11-03 03:31:41,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 03:31:41,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:41,409 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:41,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:31:41,409 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 03:31:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -301046001, now seen corresponding path program 1 times [2022-11-03 03:31:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:31:41,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311252159] [2022-11-03 03:31:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:31:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 792 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 786 trivial. 0 not checked. [2022-11-03 03:31:43,434 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:31:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311252159] [2022-11-03 03:31:43,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311252159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:43,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:43,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:31:43,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201924470] [2022-11-03 03:31:43,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:43,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:31:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:31:43,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:31:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:31:43,437 INFO L87 Difference]: Start difference. First operand 31863 states and 44647 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:31:45,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:51,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:57,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:31:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:57,777 INFO L93 Difference]: Finished difference Result 31876 states and 44656 transitions. [2022-11-03 03:31:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:31:57,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 211 [2022-11-03 03:31:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:57,927 INFO L225 Difference]: With dead ends: 31876 [2022-11-03 03:31:57,928 INFO L226 Difference]: Without dead ends: 31874 [2022-11-03 03:31:57,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:31:57,947 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:57,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 03:31:57,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31874 states. [2022-11-03 03:32:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31874 to 31867. [2022-11-03 03:32:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31867 states, 18511 states have (on average 1.2647074712333208) internal successors, (23411), 19358 states have internal predecessors, (23411), 10597 states have call successors, (10597), 2813 states have call predecessors, (10597), 2756 states have return successors, (10642), 10205 states have call predecessors, (10642), 10585 states have call successors, (10642) [2022-11-03 03:32:00,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31867 states to 31867 states and 44650 transitions. [2022-11-03 03:32:00,321 INFO L78 Accepts]: Start accepts. Automaton has 31867 states and 44650 transitions. Word has length 211 [2022-11-03 03:32:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 31867 states and 44650 transitions. [2022-11-03 03:32:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 03:32:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 31867 states and 44650 transitions. [2022-11-03 03:32:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-03 03:32:00,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:00,330 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:32:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:32:00,330 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 03:32:00,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash -801328874, now seen corresponding path program 1 times [2022-11-03 03:32:00,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:00,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236561716] [2022-11-03 03:32:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-11-03 03:32:02,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:02,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236561716] [2022-11-03 03:32:02,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236561716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:02,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:02,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:32:02,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843615031] [2022-11-03 03:32:02,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:02,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:02,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:02,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:02,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:32:02,136 INFO L87 Difference]: Start difference. First operand 31867 states and 44650 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:32:04,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:09,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:16,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:16,354 INFO L93 Difference]: Finished difference Result 31880 states and 44659 transitions. [2022-11-03 03:32:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:32:16,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 217 [2022-11-03 03:32:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:16,473 INFO L225 Difference]: With dead ends: 31880 [2022-11-03 03:32:16,474 INFO L226 Difference]: Without dead ends: 31878 [2022-11-03 03:32:16,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:32:16,487 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1893 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:16,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1893 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 03:32:16,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31878 states. [2022-11-03 03:32:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31878 to 31871. [2022-11-03 03:32:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31871 states, 18514 states have (on average 1.2646645781570702) internal successors, (23414), 19361 states have internal predecessors, (23414), 10597 states have call successors, (10597), 2814 states have call predecessors, (10597), 2757 states have return successors, (10642), 10205 states have call predecessors, (10642), 10585 states have call successors, (10642) [2022-11-03 03:32:18,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31871 states to 31871 states and 44653 transitions. [2022-11-03 03:32:18,796 INFO L78 Accepts]: Start accepts. Automaton has 31871 states and 44653 transitions. Word has length 217 [2022-11-03 03:32:18,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:18,797 INFO L495 AbstractCegarLoop]: Abstraction has 31871 states and 44653 transitions. [2022-11-03 03:32:18,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 03:32:18,797 INFO L276 IsEmpty]: Start isEmpty. Operand 31871 states and 44653 transitions. [2022-11-03 03:32:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-03 03:32:18,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:18,806 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:18,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:32:18,806 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 03:32:18,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:18,807 INFO L85 PathProgramCache]: Analyzing trace with hash -174189878, now seen corresponding path program 1 times [2022-11-03 03:32:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685013814] [2022-11-03 03:32:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 815 trivial. 0 not checked. [2022-11-03 03:32:20,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:20,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685013814] [2022-11-03 03:32:20,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685013814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:20,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:20,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:32:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074870737] [2022-11-03 03:32:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:20,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:20,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:32:20,559 INFO L87 Difference]: Start difference. First operand 31871 states and 44653 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:32:22,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:28,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:35,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:35,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:35,456 INFO L93 Difference]: Finished difference Result 31884 states and 44662 transitions. [2022-11-03 03:32:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:32:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 222 [2022-11-03 03:32:35,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:35,559 INFO L225 Difference]: With dead ends: 31884 [2022-11-03 03:32:35,559 INFO L226 Difference]: Without dead ends: 31882 [2022-11-03 03:32:35,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:32:35,571 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:35,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 03:32:35,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31882 states. [2022-11-03 03:32:37,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31882 to 31875. [2022-11-03 03:32:37,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31875 states, 18517 states have (on average 1.2646216989793162) internal successors, (23417), 19364 states have internal predecessors, (23417), 10597 states have call successors, (10597), 2815 states have call predecessors, (10597), 2758 states have return successors, (10642), 10205 states have call predecessors, (10642), 10585 states have call successors, (10642) [2022-11-03 03:32:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31875 states to 31875 states and 44656 transitions. [2022-11-03 03:32:37,569 INFO L78 Accepts]: Start accepts. Automaton has 31875 states and 44656 transitions. Word has length 222 [2022-11-03 03:32:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:37,570 INFO L495 AbstractCegarLoop]: Abstraction has 31875 states and 44656 transitions. [2022-11-03 03:32:37,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-03 03:32:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 31875 states and 44656 transitions. [2022-11-03 03:32:37,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-03 03:32:37,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:37,579 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:37,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:32:37,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:32:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash 775723825, now seen corresponding path program 1 times [2022-11-03 03:32:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:37,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708109359] [2022-11-03 03:32:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2022-11-03 03:32:38,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:38,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708109359] [2022-11-03 03:32:38,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708109359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:38,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:38,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:32:38,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238207371] [2022-11-03 03:32:38,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:38,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:38,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:38,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:38,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:32:38,918 INFO L87 Difference]: Start difference. First operand 31875 states and 44656 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:32:41,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:47,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:53,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:32:54,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:32:54,048 INFO L93 Difference]: Finished difference Result 50391 states and 70398 transitions. [2022-11-03 03:32:54,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:32:54,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2022-11-03 03:32:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:32:54,246 INFO L225 Difference]: With dead ends: 50391 [2022-11-03 03:32:54,246 INFO L226 Difference]: Without dead ends: 50389 [2022-11-03 03:32:54,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:32:54,266 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 1806 mSDsluCounter, 7138 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 8458 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:32:54,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 8458 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1354 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 03:32:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50389 states. [2022-11-03 03:32:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50389 to 50360. [2022-11-03 03:32:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50360 states, 29339 states have (on average 1.2657213947305634) internal successors, (37135), 30714 states have internal predecessors, (37135), 16521 states have call successors, (16521), 4662 states have call predecessors, (16521), 4497 states have return successors, (16712), 15723 states have call predecessors, (16712), 16501 states have call successors, (16712) [2022-11-03 03:32:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50360 states to 50360 states and 70368 transitions. [2022-11-03 03:32:57,464 INFO L78 Accepts]: Start accepts. Automaton has 50360 states and 70368 transitions. Word has length 226 [2022-11-03 03:32:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:32:57,464 INFO L495 AbstractCegarLoop]: Abstraction has 50360 states and 70368 transitions. [2022-11-03 03:32:57,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 03:32:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 50360 states and 70368 transitions. [2022-11-03 03:32:57,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-03 03:32:57,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:32:57,472 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:32:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 03:32:57,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:32:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:32:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -937860598, now seen corresponding path program 1 times [2022-11-03 03:32:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:32:57,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824998960] [2022-11-03 03:32:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:32:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:32:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:32:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2022-11-03 03:32:59,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:32:59,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824998960] [2022-11-03 03:32:59,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824998960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:32:59,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:32:59,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:32:59,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80894728] [2022-11-03 03:32:59,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:32:59,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:32:59,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:32:59,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:32:59,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:32:59,138 INFO L87 Difference]: Start difference. First operand 50360 states and 70368 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:33:01,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:07,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:13,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:14,329 INFO L93 Difference]: Finished difference Result 50373 states and 70377 transitions. [2022-11-03 03:33:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 232 [2022-11-03 03:33:14,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:14,498 INFO L225 Difference]: With dead ends: 50373 [2022-11-03 03:33:14,498 INFO L226 Difference]: Without dead ends: 50371 [2022-11-03 03:33:14,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:14,517 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:14,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 03:33:14,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50371 states. [2022-11-03 03:33:17,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50371 to 50364. [2022-11-03 03:33:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50364 states, 29342 states have (on average 1.265694226705746) internal successors, (37138), 30717 states have internal predecessors, (37138), 16521 states have call successors, (16521), 4663 states have call predecessors, (16521), 4498 states have return successors, (16712), 15723 states have call predecessors, (16712), 16501 states have call successors, (16712) [2022-11-03 03:33:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50364 states to 50364 states and 70371 transitions. [2022-11-03 03:33:17,738 INFO L78 Accepts]: Start accepts. Automaton has 50364 states and 70371 transitions. Word has length 232 [2022-11-03 03:33:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:17,738 INFO L495 AbstractCegarLoop]: Abstraction has 50364 states and 70371 transitions. [2022-11-03 03:33:17,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 03:33:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 50364 states and 70371 transitions. [2022-11-03 03:33:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-03 03:33:17,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:17,747 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 9, 8, 8, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:17,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:33:17,747 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 03:33:17,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash 2095391126, now seen corresponding path program 1 times [2022-11-03 03:33:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:17,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448213402] [2022-11-03 03:33:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:19,256 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-03 03:33:19,256 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:19,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448213402] [2022-11-03 03:33:19,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448213402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:19,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:19,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326290273] [2022-11-03 03:33:19,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:19,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:19,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:19,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:19,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:19,259 INFO L87 Difference]: Start difference. First operand 50364 states and 70371 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:33:21,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:26,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:28,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:29,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:34,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:38,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:38,505 INFO L93 Difference]: Finished difference Result 50385 states and 70388 transitions. [2022-11-03 03:33:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 237 [2022-11-03 03:33:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:38,669 INFO L225 Difference]: With dead ends: 50385 [2022-11-03 03:33:38,669 INFO L226 Difference]: Without dead ends: 50383 [2022-11-03 03:33:38,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:38,687 INFO L413 NwaCegarLoop]: 2218 mSDtfsCounter, 1959 mSDsluCounter, 6973 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 8331 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:38,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 8331 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1167 Invalid, 3 Unknown, 0 Unchecked, 16.9s Time] [2022-11-03 03:33:38,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50383 states. [2022-11-03 03:33:41,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50383 to 50376. [2022-11-03 03:33:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50376 states, 29351 states have (on average 1.2656127559538006) internal successors, (37147), 30726 states have internal predecessors, (37147), 16521 states have call successors, (16521), 4666 states have call predecessors, (16521), 4501 states have return successors, (16712), 15723 states have call predecessors, (16712), 16501 states have call successors, (16712) [2022-11-03 03:33:41,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50376 states to 50376 states and 70380 transitions. [2022-11-03 03:33:41,749 INFO L78 Accepts]: Start accepts. Automaton has 50376 states and 70380 transitions. Word has length 237 [2022-11-03 03:33:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:33:41,750 INFO L495 AbstractCegarLoop]: Abstraction has 50376 states and 70380 transitions. [2022-11-03 03:33:41,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-03 03:33:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 50376 states and 70380 transitions. [2022-11-03 03:33:41,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-03 03:33:41,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:33:41,760 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 10, 9, 9, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:33:41,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 03:33:41,761 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 03:33:41,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:33:41,761 INFO L85 PathProgramCache]: Analyzing trace with hash -342077110, now seen corresponding path program 1 times [2022-11-03 03:33:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:33:41,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517932202] [2022-11-03 03:33:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:33:41,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:33:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:33:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2022-11-03 03:33:43,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:33:43,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517932202] [2022-11-03 03:33:43,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517932202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:33:43,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:33:43,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:33:43,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419131423] [2022-11-03 03:33:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:33:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:33:43,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:33:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:33:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:33:43,208 INFO L87 Difference]: Start difference. First operand 50376 states and 70380 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:33:45,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:51,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:58,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:33:58,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:33:58,744 INFO L93 Difference]: Finished difference Result 50389 states and 70389 transitions. [2022-11-03 03:33:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:33:58,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 242 [2022-11-03 03:33:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:33:58,912 INFO L225 Difference]: With dead ends: 50389 [2022-11-03 03:33:58,912 INFO L226 Difference]: Without dead ends: 50387 [2022-11-03 03:33:58,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:33:58,928 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:33:58,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2022-11-03 03:33:58,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50387 states. [2022-11-03 03:34:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50387 to 50380. [2022-11-03 03:34:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50380 states, 29354 states have (on average 1.2655856101383116) internal successors, (37150), 30729 states have internal predecessors, (37150), 16521 states have call successors, (16521), 4667 states have call predecessors, (16521), 4502 states have return successors, (16712), 15723 states have call predecessors, (16712), 16501 states have call successors, (16712) [2022-11-03 03:34:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50380 states to 50380 states and 70383 transitions. [2022-11-03 03:34:01,823 INFO L78 Accepts]: Start accepts. Automaton has 50380 states and 70383 transitions. Word has length 242 [2022-11-03 03:34:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:01,824 INFO L495 AbstractCegarLoop]: Abstraction has 50380 states and 70383 transitions. [2022-11-03 03:34:01,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 03:34:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 50380 states and 70383 transitions. [2022-11-03 03:34:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-03 03:34:01,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:01,833 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 11, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:01,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 03:34:01,833 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 03:34:01,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:01,834 INFO L85 PathProgramCache]: Analyzing trace with hash -260747215, now seen corresponding path program 1 times [2022-11-03 03:34:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:01,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464149709] [2022-11-03 03:34:01,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:01,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:03,484 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-11-03 03:34:03,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:03,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464149709] [2022-11-03 03:34:03,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464149709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:03,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:03,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:34:03,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19093876] [2022-11-03 03:34:03,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:03,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:34:03,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:03,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:34:03,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:34:03,487 INFO L87 Difference]: Start difference. First operand 50380 states and 70383 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 03:34:05,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:11,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:18,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:19,016 INFO L93 Difference]: Finished difference Result 50393 states and 70392 transitions. [2022-11-03 03:34:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:34:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 246 [2022-11-03 03:34:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:19,213 INFO L225 Difference]: With dead ends: 50393 [2022-11-03 03:34:19,213 INFO L226 Difference]: Without dead ends: 50391 [2022-11-03 03:34:19,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:34:19,230 INFO L413 NwaCegarLoop]: 2346 mSDtfsCounter, 1885 mSDsluCounter, 7376 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 8715 SdHoareTripleChecker+Invalid, 1394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:19,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 8715 Invalid, 1394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1389 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2022-11-03 03:34:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50391 states. [2022-11-03 03:34:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50391 to 50384. [2022-11-03 03:34:22,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50384 states, 29357 states have (on average 1.2655584698708997) internal successors, (37153), 30732 states have internal predecessors, (37153), 16521 states have call successors, (16521), 4668 states have call predecessors, (16521), 4503 states have return successors, (16712), 15723 states have call predecessors, (16712), 16501 states have call successors, (16712) [2022-11-03 03:34:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50384 states to 50384 states and 70386 transitions. [2022-11-03 03:34:22,408 INFO L78 Accepts]: Start accepts. Automaton has 50384 states and 70386 transitions. Word has length 246 [2022-11-03 03:34:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:22,409 INFO L495 AbstractCegarLoop]: Abstraction has 50384 states and 70386 transitions. [2022-11-03 03:34:22,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-03 03:34:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 50384 states and 70386 transitions. [2022-11-03 03:34:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-03 03:34:22,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:22,417 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:34:22,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 03:34:22,417 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 03:34:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1179501809, now seen corresponding path program 1 times [2022-11-03 03:34:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:22,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312055734] [2022-11-03 03:34:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:34:23,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-03 03:34:23,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:34:23,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312055734] [2022-11-03 03:34:23,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312055734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:34:23,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:34:23,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:34:23,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594665828] [2022-11-03 03:34:23,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:34:23,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:34:23,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:34:23,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:34:23,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:34:23,668 INFO L87 Difference]: Start difference. First operand 50384 states and 70386 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:34:25,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:32,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:39,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:34:41,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:34:41,047 INFO L93 Difference]: Finished difference Result 87766 states and 122888 transitions. [2022-11-03 03:34:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:34:41,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 251 [2022-11-03 03:34:41,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:34:41,390 INFO L225 Difference]: With dead ends: 87766 [2022-11-03 03:34:41,390 INFO L226 Difference]: Without dead ends: 87762 [2022-11-03 03:34:41,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:34:41,420 INFO L413 NwaCegarLoop]: 2329 mSDtfsCounter, 1830 mSDsluCounter, 7330 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:34:41,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 8658 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1383 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-03 03:34:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87762 states. [2022-11-03 03:34:46,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87762 to 87724. [2022-11-03 03:34:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87724 states, 51251 states have (on average 1.2706874012214395) internal successors, (65124), 53745 states have internal predecessors, (65124), 28621 states have call successors, (28621), 8193 states have call predecessors, (28621), 7849 states have return successors, (29100), 27081 states have call predecessors, (29100), 28585 states have call successors, (29100) [2022-11-03 03:34:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87724 states to 87724 states and 122845 transitions. [2022-11-03 03:34:47,582 INFO L78 Accepts]: Start accepts. Automaton has 87724 states and 122845 transitions. Word has length 251 [2022-11-03 03:34:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:34:47,583 INFO L495 AbstractCegarLoop]: Abstraction has 87724 states and 122845 transitions. [2022-11-03 03:34:47,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-03 03:34:47,583 INFO L276 IsEmpty]: Start isEmpty. Operand 87724 states and 122845 transitions. [2022-11-03 03:34:47,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-03 03:34:47,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:34:47,596 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:34:47,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 03:34:47,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 03:34:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:34:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash 518554289, now seen corresponding path program 1 times [2022-11-03 03:34:47,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:34:47,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282445484] [2022-11-03 03:34:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:34:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:34:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat