./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/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_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 07:41:30,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:41:30,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:41:30,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:41:30,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:41:30,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:41:30,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:41:30,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:41:30,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:41:30,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:41:30,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:41:30,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:41:30,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:41:30,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:41:30,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:41:30,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:41:30,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:41:30,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:41:30,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:41:30,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:41:30,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:41:30,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:41:30,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:41:30,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:41:30,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:41:30,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:41:30,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:41:30,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:41:30,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:41:30,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:41:30,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:41:30,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:41:30,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:41:30,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:41:30,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:41:30,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:41:30,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:41:30,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:41:30,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:41:30,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:41:30,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:41:30,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:41:31,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:41:31,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:41:31,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:41:31,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:41:31,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:41:31,034 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:41:31,034 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:41:31,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:41:31,035 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:41:31,035 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:41:31,036 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:41:31,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:41:31,036 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:41:31,037 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:41:31,037 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:41:31,037 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:41:31,037 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:41:31,037 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:41:31,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:41:31,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:41:31,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:41:31,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:41:31,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:41:31,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:41:31,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:41:31,040 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:41:31,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:41:31,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:41:31,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:41:31,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:41:31,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:41:31,041 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:41:31,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:41:31,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:41:31,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:41:31,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:41:31,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:41:31,042 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:41:31,043 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4784d7b609e947942ffa9f8266acf243583adf996e2bcae78fb9e8c8fa71002 [2022-11-19 07:41:31,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:41:31,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:41:31,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:41:31,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:41:31,326 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:41:31,327 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-19 07:41:31,402 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/data/1cf3d92e9/e60b44e579964f00ac4300d50a7d5f14/FLAG45a316398 [2022-11-19 07:41:32,370 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:41:32,370 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-19 07:41:32,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/data/1cf3d92e9/e60b44e579964f00ac4300d50a7d5f14/FLAG45a316398 [2022-11-19 07:41:32,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/data/1cf3d92e9/e60b44e579964f00ac4300d50a7d5f14 [2022-11-19 07:41:32,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:41:32,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:41:32,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:32,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:41:32,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:41:32,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:32" (1/1) ... [2022-11-19 07:41:32,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a44085a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:32, skipping insertion in model container [2022-11-19 07:41:32,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:41:32" (1/1) ... [2022-11-19 07:41:32,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:41:33,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:41:36,088 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,095 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,096 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,102 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:36,237 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:41:36,628 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,629 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,630 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,630 WARN L234 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_f31d8665-6bcd-4ca0-904a-19cda8dae302/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] [2022-11-19 07:41:36,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:41:36,881 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:41:36,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36 WrapperNode [2022-11-19 07:41:36,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:41:36,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:41:36,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:41:36,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:41:36,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,252 INFO L138 Inliner]: procedures = 470, calls = 2162, calls flagged for inlining = 234, calls inlined = 217, statements flattened = 5513 [2022-11-19 07:41:37,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:41:37,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:41:37,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:41:37,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:41:37,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,549 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:41:37,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:41:37,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:41:37,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:41:37,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (1/1) ... [2022-11-19 07:41:37,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:41:37,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:41:37,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:41:37,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f31d8665-6bcd-4ca0-904a-19cda8dae302/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:41:37,706 INFO L130 BoogieDeclarations]: Found specification of procedure check_if_running [2022-11-19 07:41:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure check_if_running [2022-11-19 07:41:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-11-19 07:41:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-11-19 07:41:37,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:41:37,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:41:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:41:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:41:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 07:41:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 07:41:37,708 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:41:37,708 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:41:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:41:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:41:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:41:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:41:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:41:37,709 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:41:37,709 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-19 07:41:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-19 07:41:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-11-19 07:41:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-11-19 07:41:37,710 INFO L130 BoogieDeclarations]: Found specification of procedure reset_tx [2022-11-19 07:41:37,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_tx [2022-11-19 07:41:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-11-19 07:41:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-11-19 07:41:37,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_76 [2022-11-19 07:41:37,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_76 [2022-11-19 07:41:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 07:41:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 07:41:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 07:41:37,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 07:41:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:41:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:41:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:41:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:41:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:41:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:41:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 07:41:37,714 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 07:41:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:41:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:41:37,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:41:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:41:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:41:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:41:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:41:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_69 [2022-11-19 07:41:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_69 [2022-11-19 07:41:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-19 07:41:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-19 07:41:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2022-11-19 07:41:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2022-11-19 07:41:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:41:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:41:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:41:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:41:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:41:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2022-11-19 07:41:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2022-11-19 07:41:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-19 07:41:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-19 07:41:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:41:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:41:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:41:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:41:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-11-19 07:41:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-11-19 07:41:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:41:37,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:41:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:41:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:41:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:41:37,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:41:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure check_duplex [2022-11-19 07:41:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure check_duplex [2022-11-19 07:41:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:41:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:41:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-19 07:41:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-19 07:41:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:41:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:41:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2022-11-19 07:41:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2022-11-19 07:41:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_resume [2022-11-19 07:41:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_resume [2022-11-19 07:41:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:41:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:41:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:41:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:41:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:41:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:41:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:41:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-11-19 07:41:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-11-19 07:41:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:41:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:41:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:41:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:41:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:41:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:41:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2022-11-19 07:41:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2022-11-19 07:41:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:41:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:41:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2022-11-19 07:41:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2022-11-19 07:41:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-19 07:41:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-19 07:41:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 07:41:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-19 07:41:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:41:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:41:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:41:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:41:37,743 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:41:37,743 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:41:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:41:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:41:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure __set_mac_addr [2022-11-19 07:41:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_mac_addr [2022-11-19 07:41:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-11-19 07:41:37,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-11-19 07:41:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:41:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:41:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-19 07:41:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sundance_exit_14_2 [2022-11-19 07:41:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:41:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:41:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:41:37,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:41:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_close [2022-11-19 07:41:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_close [2022-11-19 07:41:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:41:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:41:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2022-11-19 07:41:37,746 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2022-11-19 07:41:37,746 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_poll_controller [2022-11-19 07:41:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_poll_controller [2022-11-19 07:41:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:41:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:41:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure nway_reset [2022-11-19 07:41:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure nway_reset [2022-11-19 07:41:37,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-19 07:41:37,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_netdev_private [2022-11-19 07:41:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:41:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:41:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:41:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:41:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-19 07:41:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-19 07:41:37,748 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-11-19 07:41:37,748 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-11-19 07:41:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:41:37,749 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:41:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:41:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:41:37,749 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:41:37,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_75 [2022-11-19 07:41:37,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_75 [2022-11-19 07:41:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:41:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 07:41:37,750 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 07:41:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-19 07:41:37,750 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-19 07:41:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:41:37,750 INFO L130 BoogieDeclarations]: Found specification of procedure intr_handler [2022-11-19 07:41:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure intr_handler [2022-11-19 07:41:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure dma_mapping_error [2022-11-19 07:41:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_mapping_error [2022-11-19 07:41:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:41:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:41:37,751 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-19 07:41:37,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_netdev_private [2022-11-19 07:41:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:41:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:41:37,752 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-19 07:41:37,752 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-19 07:41:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2022-11-19 07:41:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2022-11-19 07:41:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_open [2022-11-19 07:41:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_open [2022-11-19 07:41:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_reset [2022-11-19 07:41:37,754 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_reset [2022-11-19 07:41:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-19 07:41:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-19 07:41:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-19 07:41:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-19 07:41:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-19 07:41:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-19 07:41:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:41:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:41:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 07:41:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 07:41:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure sundance_remove1 [2022-11-19 07:41:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure sundance_remove1 [2022-11-19 07:41:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_70 [2022-11-19 07:41:37,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_70 [2022-11-19 07:41:37,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:41:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:41:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:41:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 07:41:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 07:41:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure refill_rx [2022-11-19 07:41:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure refill_rx [2022-11-19 07:41:37,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:41:37,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:41:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 07:41:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 07:41:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 07:41:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 07:41:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-19 07:41:37,758 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-19 07:41:37,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:41:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:41:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:41:37,759 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-19 07:41:37,759 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-19 07:41:38,769 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:41:38,776 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:41:39,367 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:42:58,735 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:42:58,860 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:43:01,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:43:01,107 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:43:01,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:01 BoogieIcfgContainer [2022-11-19 07:43:01,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:43:01,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:43:01,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:43:01,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:43:01,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:41:32" (1/3) ... [2022-11-19 07:43:01,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf13fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:01, skipping insertion in model container [2022-11-19 07:43:01,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:41:36" (2/3) ... [2022-11-19 07:43:01,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf13fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:01, skipping insertion in model container [2022-11-19 07:43:01,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:01" (3/3) ... [2022-11-19 07:43:01,130 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-sundance.cil.i [2022-11-19 07:43:01,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:43:01,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:43:01,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:43:01,292 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;@483b2cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:43:01,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:43:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 822 states have (on average 1.2846715328467153) internal successors, (1056), 861 states have internal predecessors, (1056), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 497 states have call predecessors, (505), 505 states have call successors, (505) [2022-11-19 07:43:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-19 07:43:01,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:01,324 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] [2022-11-19 07:43:01,325 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)] === [2022-11-19 07:43:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash -938106834, now seen corresponding path program 1 times [2022-11-19 07:43:01,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:01,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351819974] [2022-11-19 07:43:01,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:01,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:43:02,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351819974] [2022-11-19 07:43:02,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351819974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:02,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:02,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776971648] [2022-11-19 07:43:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:02,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:03,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:03,006 INFO L87 Difference]: Start difference. First operand has 1432 states, 822 states have (on average 1.2846715328467153) internal successors, (1056), 861 states have internal predecessors, (1056), 511 states have call successors, (511), 101 states have call predecessors, (511), 100 states have return successors, (505), 497 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) [2022-11-19 07:43:05,129 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 [] [2022-11-19 07:43:10,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:13,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:13,258 INFO L93 Difference]: Finished difference Result 4094 states and 6019 transitions. [2022-11-19 07:43:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:13,262 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 [2022-11-19 07:43:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:13,316 INFO L225 Difference]: With dead ends: 4094 [2022-11-19 07:43:13,317 INFO L226 Difference]: Without dead ends: 2679 [2022-11-19 07:43:13,336 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 [2022-11-19 07:43:13,343 INFO L413 NwaCegarLoop]: 2190 mSDtfsCounter, 1839 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:13,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 3905 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 596 Invalid, 3 Unknown, 0 Unchecked, 9.9s Time] [2022-11-19 07:43:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-11-19 07:43:13,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2674. [2022-11-19 07:43:13,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 1540 states have (on average 1.2785714285714285) internal successors, (1969), 1608 states have internal predecessors, (1969), 936 states have call successors, (936), 196 states have call predecessors, (936), 195 states have return successors, (932), 915 states have call predecessors, (932), 932 states have call successors, (932) [2022-11-19 07:43:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 3837 transitions. [2022-11-19 07:43:13,649 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 3837 transitions. Word has length 151 [2022-11-19 07:43:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:13,655 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 3837 transitions. [2022-11-19 07:43:13,655 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) [2022-11-19 07:43:13,655 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 3837 transitions. [2022-11-19 07:43:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-19 07:43:13,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:13,667 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] [2022-11-19 07:43:13,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:43:13,667 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)] === [2022-11-19 07:43:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -640825419, now seen corresponding path program 1 times [2022-11-19 07:43:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:13,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769081408] [2022-11-19 07:43:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:43:14,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:14,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769081408] [2022-11-19 07:43:14,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769081408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:14,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:14,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232264794] [2022-11-19 07:43:14,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:14,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:14,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:14,502 INFO L87 Difference]: Start difference. First operand 2674 states and 3837 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) [2022-11-19 07:43:16,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:20,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:25,015 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 [] [2022-11-19 07:43:25,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:25,050 INFO L93 Difference]: Finished difference Result 7552 states and 10786 transitions. [2022-11-19 07:43:25,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:25,052 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 [2022-11-19 07:43:25,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:25,097 INFO L225 Difference]: With dead ends: 7552 [2022-11-19 07:43:25,097 INFO L226 Difference]: Without dead ends: 4905 [2022-11-19 07:43:25,114 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 [2022-11-19 07:43:25,115 INFO L413 NwaCegarLoop]: 2148 mSDtfsCounter, 1626 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:25,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3819 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 622 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2022-11-19 07:43:25,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2022-11-19 07:43:25,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4875. [2022-11-19 07:43:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 2785 states have (on average 1.2639138240574506) internal successors, (3520), 2916 states have internal predecessors, (3520), 1709 states have call successors, (1709), 381 states have call predecessors, (1709), 378 states have return successors, (1711), 1663 states have call predecessors, (1711), 1705 states have call successors, (1711) [2022-11-19 07:43:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6940 transitions. [2022-11-19 07:43:25,426 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6940 transitions. Word has length 159 [2022-11-19 07:43:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:25,428 INFO L495 AbstractCegarLoop]: Abstraction has 4875 states and 6940 transitions. [2022-11-19 07:43:25,429 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) [2022-11-19 07:43:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6940 transitions. [2022-11-19 07:43:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-19 07:43:25,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:25,435 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] [2022-11-19 07:43:25,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:43:25,435 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)] === [2022-11-19 07:43:25,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:25,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1146034030, now seen corresponding path program 1 times [2022-11-19 07:43:25,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:25,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872895903] [2022-11-19 07:43:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:25,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:26,242 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2022-11-19 07:43:26,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:26,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872895903] [2022-11-19 07:43:26,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872895903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:26,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:26,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:43:26,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923973619] [2022-11-19 07:43:26,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:26,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:43:26,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:26,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:43:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:43:26,248 INFO L87 Difference]: Start difference. First operand 4875 states and 6940 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) [2022-11-19 07:43:28,331 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 [] [2022-11-19 07:43:33,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:36,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:38,997 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 [] [2022-11-19 07:43:39,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:43:39,029 INFO L93 Difference]: Finished difference Result 14355 states and 20455 transitions. [2022-11-19 07:43:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:43:39,030 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 [2022-11-19 07:43:39,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:43:39,099 INFO L225 Difference]: With dead ends: 14355 [2022-11-19 07:43:39,099 INFO L226 Difference]: Without dead ends: 9507 [2022-11-19 07:43:39,125 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 [2022-11-19 07:43:39,130 INFO L413 NwaCegarLoop]: 2277 mSDtfsCounter, 1959 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1959 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:43:39,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1959 Valid, 3940 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 582 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2022-11-19 07:43:39,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9507 states. [2022-11-19 07:43:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9507 to 9472. [2022-11-19 07:43:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 5420 states have (on average 1.2651291512915128) internal successors, (6857), 5693 states have internal predecessors, (6857), 3304 states have call successors, (3304), 756 states have call predecessors, (3304), 745 states have return successors, (3338), 3190 states have call predecessors, (3338), 3300 states have call successors, (3338) [2022-11-19 07:43:39,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 13499 transitions. [2022-11-19 07:43:39,740 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 13499 transitions. Word has length 174 [2022-11-19 07:43:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:43:39,743 INFO L495 AbstractCegarLoop]: Abstraction has 9472 states and 13499 transitions. [2022-11-19 07:43:39,744 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) [2022-11-19 07:43:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 13499 transitions. [2022-11-19 07:43:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 07:43:39,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:43:39,751 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] [2022-11-19 07:43:39,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:43:39,752 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)] === [2022-11-19 07:43:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:43:39,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1514255935, now seen corresponding path program 1 times [2022-11-19 07:43:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:43:39,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450481450] [2022-11-19 07:43:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:43:39,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:43:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:43:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2022-11-19 07:43:41,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:43:41,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450481450] [2022-11-19 07:43:41,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450481450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:43:41,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:43:41,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:43:41,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585232465] [2022-11-19 07:43:41,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:43:41,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:43:41,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:43:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:43:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:43:41,629 INFO L87 Difference]: Start difference. First operand 9472 states and 13499 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) [2022-11-19 07:43:43,708 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 [] [2022-11-19 07:43:55,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:43:56,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:04,302 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 [] [2022-11-19 07:44:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:04,347 INFO L93 Difference]: Finished difference Result 20400 states and 28874 transitions. [2022-11-19 07:44:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:44:04,348 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 [2022-11-19 07:44:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:04,432 INFO L225 Difference]: With dead ends: 20400 [2022-11-19 07:44:04,432 INFO L226 Difference]: Without dead ends: 10955 [2022-11-19 07:44:04,484 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 [2022-11-19 07:44:04,485 INFO L413 NwaCegarLoop]: 2959 mSDtfsCounter, 5164 mSDsluCounter, 2543 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 1930 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5266 SdHoareTripleChecker+Valid, 5502 SdHoareTripleChecker+Invalid, 4387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1930 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:04,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5266 Valid, 5502 Invalid, 4387 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1930 Valid, 2455 Invalid, 2 Unknown, 0 Unchecked, 21.8s Time] [2022-11-19 07:44:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2022-11-19 07:44:05,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10880. [2022-11-19 07:44:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10880 states, 6322 states have (on average 1.2638405567858273) internal successors, (7990), 6622 states have internal predecessors, (7990), 3617 states have call successors, (3617), 957 states have call predecessors, (3617), 938 states have return successors, (3632), 3474 states have call predecessors, (3632), 3613 states have call successors, (3632) [2022-11-19 07:44:05,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10880 states to 10880 states and 15239 transitions. [2022-11-19 07:44:05,383 INFO L78 Accepts]: Start accepts. Automaton has 10880 states and 15239 transitions. Word has length 183 [2022-11-19 07:44:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:05,384 INFO L495 AbstractCegarLoop]: Abstraction has 10880 states and 15239 transitions. [2022-11-19 07:44:05,385 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) [2022-11-19 07:44:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 10880 states and 15239 transitions. [2022-11-19 07:44:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-19 07:44:05,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:05,392 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] [2022-11-19 07:44:05,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:44:05,393 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)] === [2022-11-19 07:44:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:05,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1655777620, now seen corresponding path program 1 times [2022-11-19 07:44:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:05,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94828813] [2022-11-19 07:44:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-19 07:44:06,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94828813] [2022-11-19 07:44:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94828813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:06,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:44:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943449864] [2022-11-19 07:44:06,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:44:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:06,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:44:06,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:44:06,902 INFO L87 Difference]: Start difference. First operand 10880 states and 15239 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) [2022-11-19 07:44:08,992 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 [] [2022-11-19 07:44:14,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:16,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:18,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:21,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:25,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:27,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:27,544 INFO L93 Difference]: Finished difference Result 21442 states and 30062 transitions. [2022-11-19 07:44:27,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:44:27,546 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 [2022-11-19 07:44:27,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:27,659 INFO L225 Difference]: With dead ends: 21442 [2022-11-19 07:44:27,660 INFO L226 Difference]: Without dead ends: 21440 [2022-11-19 07:44:27,670 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 [2022-11-19 07:44:27,670 INFO L413 NwaCegarLoop]: 2211 mSDtfsCounter, 1964 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 8312 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:27,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 8312 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 4 Unknown, 0 Unchecked, 19.7s Time] [2022-11-19 07:44:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21440 states. [2022-11-19 07:44:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21440 to 21433. [2022-11-19 07:44:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21433 states, 12442 states have (on average 1.2652306703102396) internal successors, (15742), 13037 states have internal predecessors, (15742), 7142 states have call successors, (7142), 1884 states have call predecessors, (7142), 1846 states have return successors, (7172), 6857 states have call predecessors, (7172), 7134 states have call successors, (7172) [2022-11-19 07:44:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21433 states to 21433 states and 30056 transitions. [2022-11-19 07:44:28,929 INFO L78 Accepts]: Start accepts. Automaton has 21433 states and 30056 transitions. Word has length 193 [2022-11-19 07:44:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:28,930 INFO L495 AbstractCegarLoop]: Abstraction has 21433 states and 30056 transitions. [2022-11-19 07:44:28,930 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) [2022-11-19 07:44:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 21433 states and 30056 transitions. [2022-11-19 07:44:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 07:44:28,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:28,935 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] [2022-11-19 07:44:28,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:44:28,935 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)] === [2022-11-19 07:44:28,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:28,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1224248506, now seen corresponding path program 1 times [2022-11-19 07:44:28,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:28,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669255884] [2022-11-19 07:44:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:28,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:30,281 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-19 07:44:30,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:30,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669255884] [2022-11-19 07:44:30,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669255884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:30,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:30,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:44:30,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744064631] [2022-11-19 07:44:30,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:30,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:44:30,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:30,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:44:30,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:44:30,283 INFO L87 Difference]: Start difference. First operand 21433 states and 30056 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) [2022-11-19 07:44:32,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:37,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:39,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:40,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:43,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:47,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:47,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:44:47,293 INFO L93 Difference]: Finished difference Result 21446 states and 30065 transitions. [2022-11-19 07:44:47,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:44:47,294 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 [2022-11-19 07:44:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:44:47,407 INFO L225 Difference]: With dead ends: 21446 [2022-11-19 07:44:47,407 INFO L226 Difference]: Without dead ends: 21444 [2022-11-19 07:44:47,423 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 [2022-11-19 07:44:47,425 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1958 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:44:47,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 8315 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 3 Unknown, 0 Unchecked, 16.2s Time] [2022-11-19 07:44:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21444 states. [2022-11-19 07:44:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21444 to 21437. [2022-11-19 07:44:48,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21437 states, 12445 states have (on average 1.265166733627963) internal successors, (15745), 13040 states have internal predecessors, (15745), 7142 states have call successors, (7142), 1885 states have call predecessors, (7142), 1847 states have return successors, (7172), 6857 states have call predecessors, (7172), 7134 states have call successors, (7172) [2022-11-19 07:44:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21437 states to 21437 states and 30059 transitions. [2022-11-19 07:44:48,945 INFO L78 Accepts]: Start accepts. Automaton has 21437 states and 30059 transitions. Word has length 201 [2022-11-19 07:44:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:44:48,946 INFO L495 AbstractCegarLoop]: Abstraction has 21437 states and 30059 transitions. [2022-11-19 07:44:48,946 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) [2022-11-19 07:44:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21437 states and 30059 transitions. [2022-11-19 07:44:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-19 07:44:48,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:44:48,952 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] [2022-11-19 07:44:48,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:44:48,952 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)] === [2022-11-19 07:44:48,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:44:48,953 INFO L85 PathProgramCache]: Analyzing trace with hash 582226985, now seen corresponding path program 1 times [2022-11-19 07:44:48,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:44:48,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972476400] [2022-11-19 07:44:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:44:48,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:44:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:44:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 778 trivial. 0 not checked. [2022-11-19 07:44:50,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:44:50,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972476400] [2022-11-19 07:44:50,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972476400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:44:50,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:44:50,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:44:50,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399305148] [2022-11-19 07:44:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:44:50,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:44:50,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:44:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:44:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:44:50,311 INFO L87 Difference]: Start difference. First operand 21437 states and 30059 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) [2022-11-19 07:44:52,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:44:58,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:04,737 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 [] [2022-11-19 07:45:05,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:05,115 INFO L93 Difference]: Finished difference Result 31913 states and 44742 transitions. [2022-11-19 07:45:05,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:05,115 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 [2022-11-19 07:45:05,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:05,277 INFO L225 Difference]: With dead ends: 31913 [2022-11-19 07:45:05,278 INFO L226 Difference]: Without dead ends: 31911 [2022-11-19 07:45:05,297 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 [2022-11-19 07:45:05,297 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1884 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:05,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 8696 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 3 Unknown, 0 Unchecked, 13.3s Time] [2022-11-19 07:45:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31911 states. [2022-11-19 07:45:07,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31911 to 31904. [2022-11-19 07:45:07,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31904 states, 18517 states have (on average 1.2654857698331263) internal successors, (23433), 19403 states have internal predecessors, (23433), 10629 states have call successors, (10629), 2812 states have call predecessors, (10629), 2755 states have return successors, (10674), 10202 states have call predecessors, (10674), 10617 states have call successors, (10674) [2022-11-19 07:45:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31904 states to 31904 states and 44736 transitions. [2022-11-19 07:45:07,435 INFO L78 Accepts]: Start accepts. Automaton has 31904 states and 44736 transitions. Word has length 206 [2022-11-19 07:45:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:07,436 INFO L495 AbstractCegarLoop]: Abstraction has 31904 states and 44736 transitions. [2022-11-19 07:45:07,436 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) [2022-11-19 07:45:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 31904 states and 44736 transitions. [2022-11-19 07:45:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-19 07:45:07,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:07,443 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:07,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:45:07,443 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)] === [2022-11-19 07:45:07,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:07,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1745815163, now seen corresponding path program 1 times [2022-11-19 07:45:07,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:07,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492645880] [2022-11-19 07:45:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:07,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-11-19 07:45:08,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:08,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492645880] [2022-11-19 07:45:08,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492645880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:08,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:08,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563775489] [2022-11-19 07:45:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:08,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:08,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:08,670 INFO L87 Difference]: Start difference. First operand 31904 states and 44736 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-19 07:45:10,760 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 [] [2022-11-19 07:45:16,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:22,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:23,207 INFO L93 Difference]: Finished difference Result 31917 states and 44745 transitions. [2022-11-19 07:45:23,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:23,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 208 [2022-11-19 07:45:23,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:23,372 INFO L225 Difference]: With dead ends: 31917 [2022-11-19 07:45:23,372 INFO L226 Difference]: Without dead ends: 31915 [2022-11-19 07:45:23,387 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 [2022-11-19 07:45:23,387 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1885 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:23,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 8696 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 3 Unknown, 0 Unchecked, 13.1s Time] [2022-11-19 07:45:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31915 states. [2022-11-19 07:45:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31915 to 31908. [2022-11-19 07:45:24,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31908 states, 18520 states have (on average 1.2654427645788338) internal successors, (23436), 19406 states have internal predecessors, (23436), 10629 states have call successors, (10629), 2813 states have call predecessors, (10629), 2756 states have return successors, (10674), 10202 states have call predecessors, (10674), 10617 states have call successors, (10674) [2022-11-19 07:45:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31908 states to 31908 states and 44739 transitions. [2022-11-19 07:45:24,975 INFO L78 Accepts]: Start accepts. Automaton has 31908 states and 44739 transitions. Word has length 208 [2022-11-19 07:45:24,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:24,976 INFO L495 AbstractCegarLoop]: Abstraction has 31908 states and 44739 transitions. [2022-11-19 07:45:24,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-19 07:45:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 31908 states and 44739 transitions. [2022-11-19 07:45:24,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-19 07:45:24,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:24,984 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:24,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:45:24,984 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)] === [2022-11-19 07:45:24,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:24,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2043451913, now seen corresponding path program 1 times [2022-11-19 07:45:24,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:24,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142101173] [2022-11-19 07:45:24,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:24,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:25,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-19 07:45:26,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:26,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142101173] [2022-11-19 07:45:26,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142101173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:26,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:26,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:26,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271411926] [2022-11-19 07:45:26,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:26,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:26,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:26,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:26,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:26,243 INFO L87 Difference]: Start difference. First operand 31908 states and 44739 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) [2022-11-19 07:45:28,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:34,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:36,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:38,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:42,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:46,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:48,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:50,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:45:50,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:45:50,417 INFO L93 Difference]: Finished difference Result 31925 states and 44752 transitions. [2022-11-19 07:45:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:45:50,419 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 216 [2022-11-19 07:45:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:45:50,582 INFO L225 Difference]: With dead ends: 31925 [2022-11-19 07:45:50,583 INFO L226 Difference]: Without dead ends: 31923 [2022-11-19 07:45:50,598 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 [2022-11-19 07:45:50,599 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1958 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:45:50,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 8315 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1177 Invalid, 7 Unknown, 0 Unchecked, 22.6s Time] [2022-11-19 07:45:50,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31923 states. [2022-11-19 07:45:52,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31923 to 31916. [2022-11-19 07:45:52,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31916 states, 18526 states have (on average 1.2653567958544747) internal successors, (23442), 19412 states have internal predecessors, (23442), 10629 states have call successors, (10629), 2815 states have call predecessors, (10629), 2758 states have return successors, (10674), 10202 states have call predecessors, (10674), 10617 states have call successors, (10674) [2022-11-19 07:45:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31916 states to 31916 states and 44745 transitions. [2022-11-19 07:45:52,284 INFO L78 Accepts]: Start accepts. Automaton has 31916 states and 44745 transitions. Word has length 216 [2022-11-19 07:45:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:45:52,285 INFO L495 AbstractCegarLoop]: Abstraction has 31916 states and 44745 transitions. [2022-11-19 07:45:52,285 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) [2022-11-19 07:45:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 31916 states and 44745 transitions. [2022-11-19 07:45:52,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-19 07:45:52,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:45:52,293 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:45:52,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:45:52,294 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)] === [2022-11-19 07:45:52,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:45:52,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1243293147, now seen corresponding path program 1 times [2022-11-19 07:45:52,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:45:52,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397154770] [2022-11-19 07:45:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:45:52,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:45:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:45:53,523 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2022-11-19 07:45:53,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:45:53,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397154770] [2022-11-19 07:45:53,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397154770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:45:53,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:45:53,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:45:53,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934536782] [2022-11-19 07:45:53,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:45:53,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:45:53,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:45:53,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:45:53,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:45:53,525 INFO L87 Difference]: Start difference. First operand 31916 states and 44745 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-19 07:45:55,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:01,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:03,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:04,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:08,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:12,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:12,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:12,947 INFO L93 Difference]: Finished difference Result 31933 states and 44758 transitions. [2022-11-19 07:46:12,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:12,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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 218 [2022-11-19 07:46:12,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:13,068 INFO L225 Difference]: With dead ends: 31933 [2022-11-19 07:46:13,068 INFO L226 Difference]: Without dead ends: 31931 [2022-11-19 07:46:13,082 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 [2022-11-19 07:46:13,082 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1959 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:13,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 8315 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1179 Invalid, 3 Unknown, 0 Unchecked, 17.7s Time] [2022-11-19 07:46:13,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31931 states. [2022-11-19 07:46:14,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31931 to 31924. [2022-11-19 07:46:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31924 states, 18532 states have (on average 1.2652708827973236) internal successors, (23448), 19418 states have internal predecessors, (23448), 10629 states have call successors, (10629), 2817 states have call predecessors, (10629), 2760 states have return successors, (10674), 10202 states have call predecessors, (10674), 10617 states have call successors, (10674) [2022-11-19 07:46:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31924 states to 31924 states and 44751 transitions. [2022-11-19 07:46:14,937 INFO L78 Accepts]: Start accepts. Automaton has 31924 states and 44751 transitions. Word has length 218 [2022-11-19 07:46:14,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:14,938 INFO L495 AbstractCegarLoop]: Abstraction has 31924 states and 44751 transitions. [2022-11-19 07:46:14,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 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) [2022-11-19 07:46:14,939 INFO L276 IsEmpty]: Start isEmpty. Operand 31924 states and 44751 transitions. [2022-11-19 07:46:14,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-11-19 07:46:14,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:14,946 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] [2022-11-19 07:46:14,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:46:14,947 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)] === [2022-11-19 07:46:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:14,947 INFO L85 PathProgramCache]: Analyzing trace with hash 240187369, now seen corresponding path program 1 times [2022-11-19 07:46:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:14,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463292392] [2022-11-19 07:46:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:14,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:16,274 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2022-11-19 07:46:16,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:16,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463292392] [2022-11-19 07:46:16,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463292392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:16,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:16,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:46:16,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695813462] [2022-11-19 07:46:16,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:16,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:46:16,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:16,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:46:16,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:16,276 INFO L87 Difference]: Start difference. First operand 31924 states and 44751 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) [2022-11-19 07:46:18,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:24,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:25,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:27,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:32,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:36,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:38,078 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 [] [2022-11-19 07:46:38,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:46:38,220 INFO L93 Difference]: Finished difference Result 42091 states and 58537 transitions. [2022-11-19 07:46:38,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:46:38,220 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 [2022-11-19 07:46:38,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:46:38,404 INFO L225 Difference]: With dead ends: 42091 [2022-11-19 07:46:38,404 INFO L226 Difference]: Without dead ends: 42089 [2022-11-19 07:46:38,428 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 [2022-11-19 07:46:38,429 INFO L413 NwaCegarLoop]: 2172 mSDtfsCounter, 1879 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 8078 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:46:38,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1885 Valid, 8078 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1168 Invalid, 5 Unknown, 0 Unchecked, 19.5s Time] [2022-11-19 07:46:38,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42089 states. [2022-11-19 07:46:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42089 to 42071. [2022-11-19 07:46:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42071 states, 24435 states have (on average 1.2629425005115613) internal successors, (30860), 25616 states have internal predecessors, (30860), 13770 states have call successors, (13770), 3974 states have call predecessors, (13770), 3863 states have return successors, (13888), 13128 states have call predecessors, (13888), 13754 states have call successors, (13888) [2022-11-19 07:46:40,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42071 states to 42071 states and 58518 transitions. [2022-11-19 07:46:40,953 INFO L78 Accepts]: Start accepts. Automaton has 42071 states and 58518 transitions. Word has length 226 [2022-11-19 07:46:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:46:40,954 INFO L495 AbstractCegarLoop]: Abstraction has 42071 states and 58518 transitions. [2022-11-19 07:46:40,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (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) [2022-11-19 07:46:40,955 INFO L276 IsEmpty]: Start isEmpty. Operand 42071 states and 58518 transitions. [2022-11-19 07:46:40,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-19 07:46:40,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:46:40,962 INFO L195 NwaCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 8, 7, 7, 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] [2022-11-19 07:46:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:46:40,962 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)] === [2022-11-19 07:46:40,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:46:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1198814246, now seen corresponding path program 1 times [2022-11-19 07:46:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:46:40,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303416182] [2022-11-19 07:46:40,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:46:40,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:46:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:46:42,595 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-19 07:46:42,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:46:42,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303416182] [2022-11-19 07:46:42,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303416182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:46:42,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:46:42,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:46:42,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413780564] [2022-11-19 07:46:42,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:46:42,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:46:42,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:46:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:46:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:46:42,598 INFO L87 Difference]: Start difference. First operand 42071 states and 58518 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) [2022-11-19 07:46:44,693 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 [] [2022-11-19 07:46:50,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:52,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:54,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:46:58,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:02,632 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 [] [2022-11-19 07:47:02,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:02,806 INFO L93 Difference]: Finished difference Result 42088 states and 58531 transitions. [2022-11-19 07:47:02,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:47:02,807 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 231 [2022-11-19 07:47:02,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:02,975 INFO L225 Difference]: With dead ends: 42088 [2022-11-19 07:47:02,975 INFO L226 Difference]: Without dead ends: 42086 [2022-11-19 07:47:02,994 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 [2022-11-19 07:47:02,995 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1958 mSDsluCounter, 6101 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 8315 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:02,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 8315 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1178 Invalid, 4 Unknown, 0 Unchecked, 18.0s Time] [2022-11-19 07:47:03,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42086 states. [2022-11-19 07:47:05,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42086 to 42079. [2022-11-19 07:47:05,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42079 states, 24441 states have (on average 1.2628779509840022) internal successors, (30866), 25622 states have internal predecessors, (30866), 13770 states have call successors, (13770), 3976 states have call predecessors, (13770), 3865 states have return successors, (13888), 13128 states have call predecessors, (13888), 13754 states have call successors, (13888) [2022-11-19 07:47:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42079 states to 42079 states and 58524 transitions. [2022-11-19 07:47:05,953 INFO L78 Accepts]: Start accepts. Automaton has 42079 states and 58524 transitions. Word has length 231 [2022-11-19 07:47:05,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:05,953 INFO L495 AbstractCegarLoop]: Abstraction has 42079 states and 58524 transitions. [2022-11-19 07:47:05,953 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) [2022-11-19 07:47:05,954 INFO L276 IsEmpty]: Start isEmpty. Operand 42079 states and 58524 transitions. [2022-11-19 07:47:05,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-19 07:47:05,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:05,964 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] [2022-11-19 07:47:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:47:05,964 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)] === [2022-11-19 07:47:05,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash -500364726, now seen corresponding path program 1 times [2022-11-19 07:47:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:05,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466937600] [2022-11-19 07:47:05,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:05,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2022-11-19 07:47:07,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466937600] [2022-11-19 07:47:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466937600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:07,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:07,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:47:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863216295] [2022-11-19 07:47:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:07,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:47:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:47:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:07,525 INFO L87 Difference]: Start difference. First operand 42079 states and 58524 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) [2022-11-19 07:47:09,602 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 [] [2022-11-19 07:47:15,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:22,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:23,321 INFO L93 Difference]: Finished difference Result 42092 states and 58533 transitions. [2022-11-19 07:47:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:47:23,322 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 [2022-11-19 07:47:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:23,461 INFO L225 Difference]: With dead ends: 42092 [2022-11-19 07:47:23,462 INFO L226 Difference]: Without dead ends: 42090 [2022-11-19 07:47:23,478 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 [2022-11-19 07:47:23,479 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1884 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:23,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 8696 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-19 07:47:23,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42090 states. [2022-11-19 07:47:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42090 to 42083. [2022-11-19 07:47:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42083 states, 24444 states have (on average 1.26284568810342) internal successors, (30869), 25625 states have internal predecessors, (30869), 13770 states have call successors, (13770), 3977 states have call predecessors, (13770), 3866 states have return successors, (13888), 13128 states have call predecessors, (13888), 13754 states have call successors, (13888) [2022-11-19 07:47:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42083 states to 42083 states and 58527 transitions. [2022-11-19 07:47:26,318 INFO L78 Accepts]: Start accepts. Automaton has 42083 states and 58527 transitions. Word has length 237 [2022-11-19 07:47:26,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:26,319 INFO L495 AbstractCegarLoop]: Abstraction has 42083 states and 58527 transitions. [2022-11-19 07:47:26,319 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) [2022-11-19 07:47:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 42083 states and 58527 transitions. [2022-11-19 07:47:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-11-19 07:47:26,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:26,327 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] [2022-11-19 07:47:26,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:47:26,327 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)] === [2022-11-19 07:47:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -636230171, now seen corresponding path program 1 times [2022-11-19 07:47:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544205733] [2022-11-19 07:47:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:26,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 937 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2022-11-19 07:47:27,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544205733] [2022-11-19 07:47:27,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544205733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:27,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:27,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:47:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976449724] [2022-11-19 07:47:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:27,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:47:27,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:47:27,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:27,450 INFO L87 Difference]: Start difference. First operand 42083 states and 58527 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) [2022-11-19 07:47:29,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:35,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:42,892 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 [] [2022-11-19 07:47:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:47:43,466 INFO L93 Difference]: Finished difference Result 42096 states and 58536 transitions. [2022-11-19 07:47:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:47:43,467 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 [2022-11-19 07:47:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:47:43,607 INFO L225 Difference]: With dead ends: 42096 [2022-11-19 07:47:43,607 INFO L226 Difference]: Without dead ends: 42094 [2022-11-19 07:47:43,625 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 [2022-11-19 07:47:43,626 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1884 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:47:43,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 8696 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2022-11-19 07:47:43,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42094 states. [2022-11-19 07:47:45,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42094 to 42087. [2022-11-19 07:47:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42087 states, 24447 states have (on average 1.2628134331410807) internal successors, (30872), 25628 states have internal predecessors, (30872), 13770 states have call successors, (13770), 3978 states have call predecessors, (13770), 3867 states have return successors, (13888), 13128 states have call predecessors, (13888), 13754 states have call successors, (13888) [2022-11-19 07:47:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42087 states to 42087 states and 58530 transitions. [2022-11-19 07:47:46,110 INFO L78 Accepts]: Start accepts. Automaton has 42087 states and 58530 transitions. Word has length 242 [2022-11-19 07:47:46,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:47:46,110 INFO L495 AbstractCegarLoop]: Abstraction has 42087 states and 58530 transitions. [2022-11-19 07:47:46,111 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) [2022-11-19 07:47:46,111 INFO L276 IsEmpty]: Start isEmpty. Operand 42087 states and 58530 transitions. [2022-11-19 07:47:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-19 07:47:46,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:47:46,118 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] [2022-11-19 07:47:46,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:47:46,119 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)] === [2022-11-19 07:47:46,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:47:46,119 INFO L85 PathProgramCache]: Analyzing trace with hash -177914967, now seen corresponding path program 1 times [2022-11-19 07:47:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:47:46,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256567765] [2022-11-19 07:47:46,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:47:46,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:47:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:47:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 954 trivial. 0 not checked. [2022-11-19 07:47:47,478 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:47:47,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256567765] [2022-11-19 07:47:47,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256567765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:47:47,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:47:47,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:47:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505586438] [2022-11-19 07:47:47,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:47:47,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:47:47,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:47:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:47:47,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:47:47,480 INFO L87 Difference]: Start difference. First operand 42087 states and 58530 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) [2022-11-19 07:47:49,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:47:55,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:03,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:03,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:03,988 INFO L93 Difference]: Finished difference Result 42100 states and 58539 transitions. [2022-11-19 07:48:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:48:03,988 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 [2022-11-19 07:48:03,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:04,145 INFO L225 Difference]: With dead ends: 42100 [2022-11-19 07:48:04,145 INFO L226 Difference]: Without dead ends: 42098 [2022-11-19 07:48:04,161 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 [2022-11-19 07:48:04,162 INFO L413 NwaCegarLoop]: 2341 mSDtfsCounter, 1884 mSDsluCounter, 6355 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 8696 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:04,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 8696 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1404 Invalid, 3 Unknown, 0 Unchecked, 14.2s Time] [2022-11-19 07:48:04,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42098 states. [2022-11-19 07:48:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42098 to 42091. [2022-11-19 07:48:06,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42091 states, 24450 states have (on average 1.2627811860940694) internal successors, (30875), 25631 states have internal predecessors, (30875), 13770 states have call successors, (13770), 3979 states have call predecessors, (13770), 3868 states have return successors, (13888), 13128 states have call predecessors, (13888), 13754 states have call successors, (13888) [2022-11-19 07:48:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42091 states to 42091 states and 58533 transitions. [2022-11-19 07:48:06,700 INFO L78 Accepts]: Start accepts. Automaton has 42091 states and 58533 transitions. Word has length 246 [2022-11-19 07:48:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:06,701 INFO L495 AbstractCegarLoop]: Abstraction has 42091 states and 58533 transitions. [2022-11-19 07:48:06,701 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) [2022-11-19 07:48:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42091 states and 58533 transitions. [2022-11-19 07:48:06,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-19 07:48:06,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:06,707 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] [2022-11-19 07:48:06,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:48:06,707 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)] === [2022-11-19 07:48:06,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1235806054, now seen corresponding path program 1 times [2022-11-19 07:48:06,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:06,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757838264] [2022-11-19 07:48:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:06,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1016 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-11-19 07:48:08,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:08,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757838264] [2022-11-19 07:48:08,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757838264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:08,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:08,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:48:08,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238640782] [2022-11-19 07:48:08,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:08,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:48:08,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:48:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:48:08,116 INFO L87 Difference]: Start difference. First operand 42091 states and 58533 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) [2022-11-19 07:48:10,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:17,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:24,733 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 [] [2022-11-19 07:48:26,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:26,186 INFO L93 Difference]: Finished difference Result 71299 states and 99293 transitions. [2022-11-19 07:48:26,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:48:26,187 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 [2022-11-19 07:48:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:26,546 INFO L225 Difference]: With dead ends: 71299 [2022-11-19 07:48:26,546 INFO L226 Difference]: Without dead ends: 71295 [2022-11-19 07:48:26,574 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 [2022-11-19 07:48:26,575 INFO L413 NwaCegarLoop]: 2324 mSDtfsCounter, 1829 mSDsluCounter, 6315 mSDsCounter, 0 mSdLazyCounter, 1398 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 8639 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1398 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:26,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 8639 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1398 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2022-11-19 07:48:26,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71295 states. [2022-11-19 07:48:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71295 to 71263. [2022-11-19 07:48:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71263 states, 41491 states have (on average 1.2675037960039526) internal successors, (52590), 43572 states have internal predecessors, (52590), 23181 states have call successors, (23181), 6818 states have call predecessors, (23181), 6588 states have return successors, (23486), 21976 states have call predecessors, (23486), 23153 states have call successors, (23486) [2022-11-19 07:48:31,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71263 states to 71263 states and 99257 transitions. [2022-11-19 07:48:31,469 INFO L78 Accepts]: Start accepts. Automaton has 71263 states and 99257 transitions. Word has length 251 [2022-11-19 07:48:31,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:48:31,470 INFO L495 AbstractCegarLoop]: Abstraction has 71263 states and 99257 transitions. [2022-11-19 07:48:31,470 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) [2022-11-19 07:48:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 71263 states and 99257 transitions. [2022-11-19 07:48:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-11-19 07:48:31,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:48:31,480 INFO L195 NwaCegarLoop]: trace histogram [19, 13, 13, 13, 13, 13, 13, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:48:31,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-19 07:48:31,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:48:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:48:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1920214773, now seen corresponding path program 1 times [2022-11-19 07:48:31,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:48:31,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665065982] [2022-11-19 07:48:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:48:31,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:48:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:48:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2022-11-19 07:48:32,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:48:32,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665065982] [2022-11-19 07:48:32,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665065982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:48:32,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:48:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:48:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137917962] [2022-11-19 07:48:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:48:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:48:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:48:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:48:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:48:32,536 INFO L87 Difference]: Start difference. First operand 71263 states and 99257 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2022-11-19 07:48:34,635 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 [] [2022-11-19 07:48:41,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:47,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:48:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:48:49,931 INFO L93 Difference]: Finished difference Result 160195 states and 223115 transitions. [2022-11-19 07:48:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:48:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 253 [2022-11-19 07:48:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:48:50,384 INFO L225 Difference]: With dead ends: 160195 [2022-11-19 07:48:50,384 INFO L226 Difference]: Without dead ends: 89254 [2022-11-19 07:48:50,622 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 [2022-11-19 07:48:50,623 INFO L413 NwaCegarLoop]: 2713 mSDtfsCounter, 1239 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 828 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 828 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:48:50,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 4404 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 828 Invalid, 3 Unknown, 0 Unchecked, 11.8s Time] [2022-11-19 07:48:50,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89254 states.