./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-dl2k.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7 --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 e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:34:19,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:34:19,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:34:19,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:34:19,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:34:19,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:34:19,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:34:19,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:34:19,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:34:19,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:34:19,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:34:19,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:34:19,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:34:19,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:34:19,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:34:19,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:34:19,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:34:19,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:34:19,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:34:19,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:34:19,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:34:19,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:34:19,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:34:19,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:34:19,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:34:19,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:34:19,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:34:20,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:34:20,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:34:20,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:34:20,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:34:20,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:34:20,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:34:20,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:34:20,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:34:20,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:34:20,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:34:20,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:34:20,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:34:20,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:34:20,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:34:20,014 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:34:20,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:34:20,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:34:20,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:34:20,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:34:20,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:34:20,067 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:34:20,067 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:34:20,067 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:34:20,068 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:34:20,068 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:34:20,069 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:34:20,069 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:34:20,069 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:34:20,069 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:34:20,070 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:34:20,070 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:34:20,070 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:34:20,070 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:34:20,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:34:20,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:34:20,072 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:34:20,072 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:34:20,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:34:20,073 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:34:20,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:34:20,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:34:20,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:34:20,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:34:20,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:34:20,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:20,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:34:20,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:34:20,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:34:20,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e373372610053a8b3f90a6fe69a2e2f77f1b445737e9545423fdaf4f64c3f09c [2021-11-25 20:34:20,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:34:20,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:34:20,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:34:20,382 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:34:20,383 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:34:20,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-25 20:34:20,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/data/30b75cd27/b5a46aec0305444a95b086cd1b14c3e3/FLAGd6ab294b7 [2021-11-25 20:34:21,325 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:34:21,327 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-25 20:34:21,380 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/data/30b75cd27/b5a46aec0305444a95b086cd1b14c3e3/FLAGd6ab294b7 [2021-11-25 20:34:21,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/data/30b75cd27/b5a46aec0305444a95b086cd1b14c3e3 [2021-11-25 20:34:21,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:34:21,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:34:21,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:21,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:34:21,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:34:21,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:21" (1/1) ... [2021-11-25 20:34:21,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d73504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:21, skipping insertion in model container [2021-11-25 20:34:21,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:21" (1/1) ... [2021-11-25 20:34:21,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:34:21,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:34:24,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-25 20:34:24,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-25 20:34:24,769 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-25 20:34:24,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-25 20:34:24,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:24,829 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:34:25,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330704,330717] [2021-11-25 20:34:25,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[330873,330886] [2021-11-25 20:34:25,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331040,331053] [2021-11-25 20:34:25,203 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i[331208,331221] [2021-11-25 20:34:25,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:25,404 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:34:25,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25 WrapperNode [2021-11-25 20:34:25,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:25,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:25,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:34:25,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:34:25,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,702 INFO L137 Inliner]: procedures = 423, calls = 1852, calls flagged for inlining = 204, calls inlined = 187, statements flattened = 4797 [2021-11-25 20:34:25,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:25,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:34:25,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:34:25,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:34:25,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:34:25,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:34:25,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:34:25,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:34:25,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (1/1) ... [2021-11-25 20:34:25,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:25,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:26,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:34:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45d22749-a229-407c-ac6d-251e55c6276c/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:34:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:34:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:34:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:34:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:34:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:34:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:34:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:34:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:34:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:34:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:34:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 20:34:26,058 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 20:34:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 20:34:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 20:34:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure desc_to_dma [2021-11-25 20:34:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure desc_to_dma [2021-11-25 20:34:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 20:34:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 20:34:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-11-25 20:34:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-11-25 20:34:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:34:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:34:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:34:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:34:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure mii_write [2021-11-25 20:34:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_write [2021-11-25 20:34:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:34:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:34:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 20:34:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 20:34:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:34:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:34:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:34:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:34:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:34:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:34:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast [2021-11-25 20:34:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast [2021-11-25 20:34:26,064 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:34:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:34:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:34:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-25 20:34:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-25 20:34:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:34:26,067 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:34:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:34:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:34:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:34:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:34:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:34:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:34:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:34:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:34:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:34:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:34:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:34:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:34:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:34:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:34:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:34:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:34:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:34:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:34:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:34:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:34:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:34:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:34:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:34:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:34:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:34:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:34:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:34:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:34:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:34:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:34:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:34:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:34:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure rio_close [2021-11-25 20:34:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_close [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure mii_getbit [2021-11-25 20:34:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_getbit [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:34:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:34:26,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:34:26,073 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 20:34:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 20:34:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:34:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:34:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:34:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:34:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure mii_read [2021-11-25 20:34:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_read [2021-11-25 20:34:26,074 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 20:34:26,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 20:34:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:34:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:34:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:34:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:34:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:34:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:34:26,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:34:26,075 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:34:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:34:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:34:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:34:26,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:34:26,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:34:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 20:34:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 20:34:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure get_stats [2021-11-25 20:34:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure get_stats [2021-11-25 20:34:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:34:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:34:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:34:26,077 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:34:26,077 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-25 20:34:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-25 20:34:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:34:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:34:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb_ip_align [2021-11-25 20:34:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb_ip_align [2021-11-25 20:34:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 20:34:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 20:34:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:34:26,078 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:34:26,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-25 20:34:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_tx_lock_of_netdev_private [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure rio_open [2021-11-25 20:34:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_open [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-25 20:34:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-25 20:34:26,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_tx_lock_of_netdev_private [2021-11-25 20:34:26,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:34:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:34:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:34:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-25 20:34:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_rx_lock_of_netdev_private [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:34:26,080 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:34:26,080 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:34:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure rio_free_tx [2021-11-25 20:34:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_free_tx [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure rio_tx_timeout [2021-11-25 20:34:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_tx_timeout [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-25 20:34:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rx_lock_of_netdev_private [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure rio_remove1 [2021-11-25 20:34:26,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rio_remove1 [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:34:26,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:34:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:34:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-25 20:34:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rio_driver_exit_14_2 [2021-11-25 20:34:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure mii_send_bits [2021-11-25 20:34:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_send_bits [2021-11-25 20:34:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:34:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:34:26,082 INFO L130 BoogieDeclarations]: Found specification of procedure mii_set_media [2021-11-25 20:34:26,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_set_media [2021-11-25 20:34:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:34:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:34:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:34:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:34:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:34:26,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:34:26,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:34:26,895 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:34:26,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:34:27,022 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:34:29,968 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:34:30,041 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:34:31,813 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:34:31,813 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 20:34:31,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:31 BoogieIcfgContainer [2021-11-25 20:34:31,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:34:31,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:34:31,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:34:31,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:34:31,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:34:21" (1/3) ... [2021-11-25 20:34:31,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300ed501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:31, skipping insertion in model container [2021-11-25 20:34:31,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:25" (2/3) ... [2021-11-25 20:34:31,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300ed501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:31, skipping insertion in model container [2021-11-25 20:34:31,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:31" (3/3) ... [2021-11-25 20:34:31,827 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dlink-dl2k.cil.i [2021-11-25 20:34:31,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:34:31,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:34:31,904 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:34:31,917 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:34:31,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:34:31,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) [2021-11-25 20:34:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 20:34:32,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:32,006 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:32,007 INFO L402 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)] === [2021-11-25 20:34:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash -899849820, now seen corresponding path program 1 times [2021-11-25 20:34:32,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897953901] [2021-11-25 20:34:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:32,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:32,620 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 20:34:32,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:32,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897953901] [2021-11-25 20:34:32,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897953901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:32,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:32,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:34:32,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067899886] [2021-11-25 20:34:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:32,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:34:32,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:32,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:34:32,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:34:32,662 INFO L87 Difference]: Start difference. First operand has 1340 states, 778 states have (on average 1.2776349614395888) internal successors, (994), 811 states have internal predecessors, (994), 482 states have call successors, (482), 83 states have call predecessors, (482), 82 states have return successors, (476), 473 states have call predecessors, (476), 476 states have call successors, (476) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:34:35,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:38,023 INFO L93 Difference]: Finished difference Result 3747 states and 5498 transitions. [2021-11-25 20:34:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:34:38,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2021-11-25 20:34:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:38,068 INFO L225 Difference]: With dead ends: 3747 [2021-11-25 20:34:38,068 INFO L226 Difference]: Without dead ends: 2416 [2021-11-25 20:34:38,081 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:38,085 INFO L933 BasicCegarLoop]: 2051 mSDtfsCounter, 1601 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:38,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 3678 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 525 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-25 20:34:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-11-25 20:34:38,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2401. [2021-11-25 20:34:38,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1392 states have (on average 1.2658045977011494) internal successors, (1762), 1445 states have internal predecessors, (1762), 851 states have call successors, (851), 156 states have call predecessors, (851), 155 states have return successors, (847), 842 states have call predecessors, (847), 847 states have call successors, (847) [2021-11-25 20:34:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3460 transitions. [2021-11-25 20:34:38,425 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3460 transitions. Word has length 111 [2021-11-25 20:34:38,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:38,428 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3460 transitions. [2021-11-25 20:34:38,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-25 20:34:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3460 transitions. [2021-11-25 20:34:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-25 20:34:38,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:38,440 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:38,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:34:38,441 INFO L402 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)] === [2021-11-25 20:34:38,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:38,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1818111408, now seen corresponding path program 1 times [2021-11-25 20:34:38,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:38,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137537062] [2021-11-25 20:34:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:38,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-11-25 20:34:38,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:38,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137537062] [2021-11-25 20:34:38,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137537062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:38,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:38,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:34:38,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509497072] [2021-11-25 20:34:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:38,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:34:38,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:38,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:34:38,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:34:38,815 INFO L87 Difference]: Start difference. First operand 2401 states and 3460 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:34:42,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:44,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:44,412 INFO L93 Difference]: Finished difference Result 6901 states and 9931 transitions. [2021-11-25 20:34:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:34:44,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-11-25 20:34:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:44,458 INFO L225 Difference]: With dead ends: 6901 [2021-11-25 20:34:44,458 INFO L226 Difference]: Without dead ends: 4519 [2021-11-25 20:34:44,472 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:44,474 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 1623 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:44,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 3666 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 511 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:34:44,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2021-11-25 20:34:44,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 4478. [2021-11-25 20:34:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 2600 states have (on average 1.265) internal successors, (3289), 2701 states have internal predecessors, (3289), 1575 states have call successors, (1575), 303 states have call predecessors, (1575), 300 states have return successors, (1581), 1551 states have call predecessors, (1581), 1571 states have call successors, (1581) [2021-11-25 20:34:44,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 6445 transitions. [2021-11-25 20:34:44,778 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 6445 transitions. Word has length 115 [2021-11-25 20:34:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:44,778 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 6445 transitions. [2021-11-25 20:34:44,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-25 20:34:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 6445 transitions. [2021-11-25 20:34:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-25 20:34:44,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:44,787 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:34:44,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:34:44,788 INFO L402 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)] === [2021-11-25 20:34:44,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 112315929, now seen corresponding path program 1 times [2021-11-25 20:34:44,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:44,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115882370] [2021-11-25 20:34:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:44,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-25 20:34:45,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:45,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115882370] [2021-11-25 20:34:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115882370] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:45,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:34:45,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19145200] [2021-11-25 20:34:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 20:34:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 20:34:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:34:45,114 INFO L87 Difference]: Start difference. First operand 4478 states and 6445 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:34:52,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:55,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:57,409 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:59,418 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:34:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:59,886 INFO L93 Difference]: Finished difference Result 11681 states and 16736 transitions. [2021-11-25 20:34:59,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:34:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 129 [2021-11-25 20:34:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:59,956 INFO L225 Difference]: With dead ends: 11681 [2021-11-25 20:34:59,956 INFO L226 Difference]: Without dead ends: 7222 [2021-11-25 20:34:59,980 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:59,982 INFO L933 BasicCegarLoop]: 2341 mSDtfsCounter, 3678 mSDsluCounter, 4731 mSDsCounter, 0 mSdLazyCounter, 2642 mSolverCounterSat, 555 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3807 SdHoareTripleChecker+Valid, 6284 SdHoareTripleChecker+Invalid, 3199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2642 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:59,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3807 Valid, 6284 Invalid, 3199 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [555 Valid, 2642 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time] [2021-11-25 20:34:59,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7222 states. [2021-11-25 20:35:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7222 to 7161. [2021-11-25 20:35:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7161 states, 4203 states have (on average 1.264572924101832) internal successors, (5315), 4365 states have internal predecessors, (5315), 2430 states have call successors, (2430), 532 states have call predecessors, (2430), 525 states have return successors, (2431), 2388 states have call predecessors, (2431), 2426 states have call successors, (2431) [2021-11-25 20:35:00,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7161 states to 7161 states and 10176 transitions. [2021-11-25 20:35:00,536 INFO L78 Accepts]: Start accepts. Automaton has 7161 states and 10176 transitions. Word has length 129 [2021-11-25 20:35:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:00,538 INFO L470 AbstractCegarLoop]: Abstraction has 7161 states and 10176 transitions. [2021-11-25 20:35:00,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:35:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7161 states and 10176 transitions. [2021-11-25 20:35:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-25 20:35:00,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:00,545 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:35:00,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:35:00,545 INFO L402 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)] === [2021-11-25 20:35:00,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:00,546 INFO L85 PathProgramCache]: Analyzing trace with hash -545374415, now seen corresponding path program 1 times [2021-11-25 20:35:00,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:00,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006944251] [2021-11-25 20:35:00,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:00,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-25 20:35:00,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:00,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006944251] [2021-11-25 20:35:00,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006944251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:00,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:00,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:35:00,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585856826] [2021-11-25 20:35:00,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:00,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:35:00,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:35:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:35:00,770 INFO L87 Difference]: Start difference. First operand 7161 states and 10176 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, (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) [2021-11-25 20:35:04,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:08,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:08,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:08,252 INFO L93 Difference]: Finished difference Result 17918 states and 25333 transitions. [2021-11-25 20:35:08,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:35:08,253 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, (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 131 [2021-11-25 20:35:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:08,349 INFO L225 Difference]: With dead ends: 17918 [2021-11-25 20:35:08,350 INFO L226 Difference]: Without dead ends: 10776 [2021-11-25 20:35:08,387 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:08,388 INFO L933 BasicCegarLoop]: 2112 mSDtfsCounter, 1368 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 3702 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:08,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1368 Valid, 3702 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 515 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 20:35:08,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10776 states. [2021-11-25 20:35:08,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10776 to 10733. [2021-11-25 20:35:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 6254 states have (on average 1.2583946274384394) internal successors, (7870), 6499 states have internal predecessors, (7870), 3610 states have call successors, (3610), 881 states have call predecessors, (3610), 866 states have return successors, (3627), 3523 states have call predecessors, (3627), 3606 states have call successors, (3627) [2021-11-25 20:35:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15107 transitions. [2021-11-25 20:35:08,995 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15107 transitions. Word has length 131 [2021-11-25 20:35:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:08,995 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15107 transitions. [2021-11-25 20:35:08,995 INFO L471 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, (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) [2021-11-25 20:35:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15107 transitions. [2021-11-25 20:35:08,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 20:35:08,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:08,999 INFO L514 BasicCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:35:09,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:35:09,000 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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)] === [2021-11-25 20:35:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:09,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1238756010, now seen corresponding path program 1 times [2021-11-25 20:35:09,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:09,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051056007] [2021-11-25 20:35:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:09,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2021-11-25 20:35:09,190 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:09,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051056007] [2021-11-25 20:35:09,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051056007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:09,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:09,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:35:09,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939563447] [2021-11-25 20:35:09,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:09,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:35:09,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:09,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:35:09,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:35:09,194 INFO L87 Difference]: Start difference. First operand 10733 states and 15107 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:35:12,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:14,638 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:15,039 INFO L93 Difference]: Finished difference Result 30245 states and 42616 transitions. [2021-11-25 20:35:15,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:35:15,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2021-11-25 20:35:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:15,168 INFO L225 Difference]: With dead ends: 30245 [2021-11-25 20:35:15,169 INFO L226 Difference]: Without dead ends: 19531 [2021-11-25 20:35:15,229 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:15,230 INFO L933 BasicCegarLoop]: 2120 mSDtfsCounter, 1651 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:15,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 3761 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 520 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-25 20:35:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19531 states. [2021-11-25 20:35:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19531 to 19470. [2021-11-25 20:35:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19470 states, 11333 states have (on average 1.2592429189093797) internal successors, (14271), 11802 states have internal predecessors, (14271), 6565 states have call successors, (6565), 1598 states have call predecessors, (6565), 1569 states have return successors, (6603), 6378 states have call predecessors, (6603), 6561 states have call successors, (6603) [2021-11-25 20:35:16,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19470 states to 19470 states and 27439 transitions. [2021-11-25 20:35:16,418 INFO L78 Accepts]: Start accepts. Automaton has 19470 states and 27439 transitions. Word has length 133 [2021-11-25 20:35:16,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:16,420 INFO L470 AbstractCegarLoop]: Abstraction has 19470 states and 27439 transitions. [2021-11-25 20:35:16,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-25 20:35:16,420 INFO L276 IsEmpty]: Start isEmpty. Operand 19470 states and 27439 transitions. [2021-11-25 20:35:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-25 20:35:16,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:16,425 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:35:16,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:35:16,425 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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)] === [2021-11-25 20:35:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1117849443, now seen corresponding path program 1 times [2021-11-25 20:35:16,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:16,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138744249] [2021-11-25 20:35:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:16,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-11-25 20:35:16,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:16,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138744249] [2021-11-25 20:35:16,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138744249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:16,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:35:16,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467366428] [2021-11-25 20:35:16,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:16,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:35:16,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:16,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:35:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:35:16,602 INFO L87 Difference]: Start difference. First operand 19470 states and 27439 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:35:19,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:22,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:22,989 INFO L93 Difference]: Finished difference Result 50536 states and 70933 transitions. [2021-11-25 20:35:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:35:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 134 [2021-11-25 20:35:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:23,289 INFO L225 Difference]: With dead ends: 50536 [2021-11-25 20:35:23,290 INFO L226 Difference]: Without dead ends: 31085 [2021-11-25 20:35:23,345 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:35:23,347 INFO L933 BasicCegarLoop]: 2003 mSDtfsCounter, 1397 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:23,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 3604 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 20:35:23,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31085 states. [2021-11-25 20:35:24,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31085 to 31044. [2021-11-25 20:35:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31044 states, 18056 states have (on average 1.2476185201595038) internal successors, (22527), 18817 states have internal predecessors, (22527), 10366 states have call successors, (10366), 2676 states have call predecessors, (10366), 2619 states have return successors, (10452), 9991 states have call predecessors, (10452), 10362 states have call successors, (10452) [2021-11-25 20:35:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31044 states to 31044 states and 43345 transitions. [2021-11-25 20:35:25,349 INFO L78 Accepts]: Start accepts. Automaton has 31044 states and 43345 transitions. Word has length 134 [2021-11-25 20:35:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:25,350 INFO L470 AbstractCegarLoop]: Abstraction has 31044 states and 43345 transitions. [2021-11-25 20:35:25,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 20:35:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 31044 states and 43345 transitions. [2021-11-25 20:35:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-25 20:35:25,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:25,353 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:35:25,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:35:25,354 INFO L402 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)] === [2021-11-25 20:35:25,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:25,354 INFO L85 PathProgramCache]: Analyzing trace with hash -816720849, now seen corresponding path program 1 times [2021-11-25 20:35:25,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:25,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054183387] [2021-11-25 20:35:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:25,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-11-25 20:35:25,620 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:25,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054183387] [2021-11-25 20:35:25,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054183387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:25,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:25,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:25,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615609485] [2021-11-25 20:35:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:25,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:25,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:25,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:25,623 INFO L87 Difference]: Start difference. First operand 31044 states and 43345 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:35:29,277 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:32,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:34,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:35,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:35,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:35,798 INFO L93 Difference]: Finished difference Result 43245 states and 60085 transitions. [2021-11-25 20:35:35,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:35:35,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2021-11-25 20:35:35,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:36,166 INFO L225 Difference]: With dead ends: 43245 [2021-11-25 20:35:36,167 INFO L226 Difference]: Without dead ends: 43243 [2021-11-25 20:35:36,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:36,188 INFO L933 BasicCegarLoop]: 1997 mSDtfsCounter, 1385 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 7594 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:36,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 7594 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 20:35:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43243 states. [2021-11-25 20:35:38,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43243 to 43226. [2021-11-25 20:35:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43226 states, 25102 states have (on average 1.2419329137120547) internal successors, (31175), 26167 states have internal predecessors, (31175), 14384 states have call successors, (14384), 3823 states have call predecessors, (14384), 3737 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:35:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43226 states to 43226 states and 60067 transitions. [2021-11-25 20:35:38,747 INFO L78 Accepts]: Start accepts. Automaton has 43226 states and 60067 transitions. Word has length 153 [2021-11-25 20:35:38,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:38,749 INFO L470 AbstractCegarLoop]: Abstraction has 43226 states and 60067 transitions. [2021-11-25 20:35:38,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-25 20:35:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 43226 states and 60067 transitions. [2021-11-25 20:35:38,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-25 20:35:38,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:38,753 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 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] [2021-11-25 20:35:38,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:35:38,754 INFO L402 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)] === [2021-11-25 20:35:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash 458422132, now seen corresponding path program 1 times [2021-11-25 20:35:38,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:38,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803899794] [2021-11-25 20:35:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:38,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:38,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:39,030 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-25 20:35:39,030 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:39,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803899794] [2021-11-25 20:35:39,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803899794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:39,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:39,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:39,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756591807] [2021-11-25 20:35:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:39,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:39,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:39,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:39,034 INFO L87 Difference]: Start difference. First operand 43226 states and 60067 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:35:42,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:47,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:49,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:49,116 INFO L93 Difference]: Finished difference Result 43249 states and 60088 transitions. [2021-11-25 20:35:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:35:49,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-11-25 20:35:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:49,319 INFO L225 Difference]: With dead ends: 43249 [2021-11-25 20:35:49,319 INFO L226 Difference]: Without dead ends: 43247 [2021-11-25 20:35:49,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:35:49,343 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:49,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 20:35:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43247 states. [2021-11-25 20:35:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43247 to 43230. [2021-11-25 20:35:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43230 states, 25105 states have (on average 1.2419040031866162) internal successors, (31178), 26170 states have internal predecessors, (31178), 14384 states have call successors, (14384), 3824 states have call predecessors, (14384), 3738 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:35:51,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43230 states to 43230 states and 60070 transitions. [2021-11-25 20:35:51,395 INFO L78 Accepts]: Start accepts. Automaton has 43230 states and 60070 transitions. Word has length 162 [2021-11-25 20:35:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:51,399 INFO L470 AbstractCegarLoop]: Abstraction has 43230 states and 60070 transitions. [2021-11-25 20:35:51,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:35:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 43230 states and 60070 transitions. [2021-11-25 20:35:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-25 20:35:51,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:51,403 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:35:51,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:35:51,403 INFO L402 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)] === [2021-11-25 20:35:51,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:51,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1105127875, now seen corresponding path program 1 times [2021-11-25 20:35:51,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:51,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769479407] [2021-11-25 20:35:51,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:51,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-11-25 20:35:51,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:51,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769479407] [2021-11-25 20:35:51,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769479407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:35:51,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:35:51,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:35:51,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924225298] [2021-11-25 20:35:51,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:35:51,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:35:51,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:51,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:35:51,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:35:51,646 INFO L87 Difference]: Start difference. First operand 43230 states and 60070 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:35:55,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:35:59,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:01,181 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:01,262 INFO L93 Difference]: Finished difference Result 43253 states and 60091 transitions. [2021-11-25 20:36:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:36:01,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 166 [2021-11-25 20:36:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:01,439 INFO L225 Difference]: With dead ends: 43253 [2021-11-25 20:36:01,439 INFO L226 Difference]: Without dead ends: 43251 [2021-11-25 20:36:01,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:01,461 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:01,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1389 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-25 20:36:01,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43251 states. [2021-11-25 20:36:03,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43251 to 43234. [2021-11-25 20:36:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43234 states, 25108 states have (on average 1.2418750995698582) internal successors, (31181), 26173 states have internal predecessors, (31181), 14384 states have call successors, (14384), 3825 states have call predecessors, (14384), 3739 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:36:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43234 states to 43234 states and 60073 transitions. [2021-11-25 20:36:03,288 INFO L78 Accepts]: Start accepts. Automaton has 43234 states and 60073 transitions. Word has length 166 [2021-11-25 20:36:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:03,289 INFO L470 AbstractCegarLoop]: Abstraction has 43234 states and 60073 transitions. [2021-11-25 20:36:03,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 43234 states and 60073 transitions. [2021-11-25 20:36:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-25 20:36:03,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:03,294 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:03,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:36:03,295 INFO L402 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)] === [2021-11-25 20:36:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash -429108998, now seen corresponding path program 1 times [2021-11-25 20:36:03,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58612308] [2021-11-25 20:36:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:03,696 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2021-11-25 20:36:03,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:03,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58612308] [2021-11-25 20:36:03,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58612308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:03,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:03,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:03,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045531767] [2021-11-25 20:36:03,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:03,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:03,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:03,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:03,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:03,698 INFO L87 Difference]: Start difference. First operand 43234 states and 60073 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:36:07,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:10,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:12,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:14,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:14,266 INFO L93 Difference]: Finished difference Result 43257 states and 60094 transitions. [2021-11-25 20:36:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:36:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2021-11-25 20:36:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:14,401 INFO L225 Difference]: With dead ends: 43257 [2021-11-25 20:36:14,401 INFO L226 Difference]: Without dead ends: 43255 [2021-11-25 20:36:14,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:14,417 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:14,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 20:36:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43255 states. [2021-11-25 20:36:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43255 to 43238. [2021-11-25 20:36:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43238 states, 25111 states have (on average 1.2418462028593047) internal successors, (31184), 26176 states have internal predecessors, (31184), 14384 states have call successors, (14384), 3826 states have call predecessors, (14384), 3740 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:36:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43238 states to 43238 states and 60076 transitions. [2021-11-25 20:36:16,235 INFO L78 Accepts]: Start accepts. Automaton has 43238 states and 60076 transitions. Word has length 171 [2021-11-25 20:36:16,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:16,236 INFO L470 AbstractCegarLoop]: Abstraction has 43238 states and 60076 transitions. [2021-11-25 20:36:16,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 20:36:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 43238 states and 60076 transitions. [2021-11-25 20:36:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-25 20:36:16,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:16,242 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:16,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:36:16,243 INFO L402 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)] === [2021-11-25 20:36:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1020113719, now seen corresponding path program 1 times [2021-11-25 20:36:16,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167071088] [2021-11-25 20:36:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:16,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2021-11-25 20:36:16,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167071088] [2021-11-25 20:36:16,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167071088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:16,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:16,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:16,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453802103] [2021-11-25 20:36:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:16,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:16,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:16,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:16,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:16,484 INFO L87 Difference]: Start difference. First operand 43238 states and 60076 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:36:20,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:24,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:26,752 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:27,759 INFO L93 Difference]: Finished difference Result 43261 states and 60097 transitions. [2021-11-25 20:36:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:36:27,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 177 [2021-11-25 20:36:27,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:27,898 INFO L225 Difference]: With dead ends: 43261 [2021-11-25 20:36:27,898 INFO L226 Difference]: Without dead ends: 43259 [2021-11-25 20:36:27,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:27,917 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:27,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1387 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-11-25 20:36:27,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43259 states. [2021-11-25 20:36:29,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43259 to 43242. [2021-11-25 20:36:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43242 states, 25114 states have (on average 1.2418173130524808) internal successors, (31187), 26179 states have internal predecessors, (31187), 14384 states have call successors, (14384), 3827 states have call predecessors, (14384), 3741 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:36:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43242 states to 43242 states and 60079 transitions. [2021-11-25 20:36:29,918 INFO L78 Accepts]: Start accepts. Automaton has 43242 states and 60079 transitions. Word has length 177 [2021-11-25 20:36:29,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:29,919 INFO L470 AbstractCegarLoop]: Abstraction has 43242 states and 60079 transitions. [2021-11-25 20:36:29,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-25 20:36:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 43242 states and 60079 transitions. [2021-11-25 20:36:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-25 20:36:29,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:29,927 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:29,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:36:29,927 INFO L402 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)] === [2021-11-25 20:36:29,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash 993399092, now seen corresponding path program 1 times [2021-11-25 20:36:29,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:29,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137693030] [2021-11-25 20:36:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:29,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-11-25 20:36:30,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:30,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137693030] [2021-11-25 20:36:30,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137693030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:30,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:30,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:30,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382950885] [2021-11-25 20:36:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:30,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:30,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:30,167 INFO L87 Difference]: Start difference. First operand 43242 states and 60079 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:33,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:38,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:39,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:40,760 INFO L93 Difference]: Finished difference Result 43265 states and 60100 transitions. [2021-11-25 20:36:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:36:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 182 [2021-11-25 20:36:40,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:40,967 INFO L225 Difference]: With dead ends: 43265 [2021-11-25 20:36:40,967 INFO L226 Difference]: Without dead ends: 43263 [2021-11-25 20:36:40,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:40,979 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1386 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:40,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1386 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1036 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 20:36:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43263 states. [2021-11-25 20:36:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43263 to 43246. [2021-11-25 20:36:42,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43246 states, 25117 states have (on average 1.2417884301469124) internal successors, (31190), 26182 states have internal predecessors, (31190), 14384 states have call successors, (14384), 3828 states have call predecessors, (14384), 3742 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:36:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43246 states to 43246 states and 60082 transitions. [2021-11-25 20:36:42,660 INFO L78 Accepts]: Start accepts. Automaton has 43246 states and 60082 transitions. Word has length 182 [2021-11-25 20:36:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:42,661 INFO L470 AbstractCegarLoop]: Abstraction has 43246 states and 60082 transitions. [2021-11-25 20:36:42,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:42,661 INFO L276 IsEmpty]: Start isEmpty. Operand 43246 states and 60082 transitions. [2021-11-25 20:36:42,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-25 20:36:42,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:42,668 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:36:42,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:36:42,668 INFO L402 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)] === [2021-11-25 20:36:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 483161603, now seen corresponding path program 1 times [2021-11-25 20:36:42,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:42,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659602308] [2021-11-25 20:36:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:42,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 466 trivial. 0 not checked. [2021-11-25 20:36:42,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:42,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659602308] [2021-11-25 20:36:42,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659602308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:42,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:42,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:42,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675396977] [2021-11-25 20:36:42,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:42,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:42,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:42,869 INFO L87 Difference]: Start difference. First operand 43246 states and 60082 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:46,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:50,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:36:51,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:36:51,138 INFO L93 Difference]: Finished difference Result 43269 states and 60103 transitions. [2021-11-25 20:36:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:36:51,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 186 [2021-11-25 20:36:51,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:36:51,266 INFO L225 Difference]: With dead ends: 43269 [2021-11-25 20:36:51,266 INFO L226 Difference]: Without dead ends: 43267 [2021-11-25 20:36:51,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:36:51,283 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:36:51,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1385 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 20:36:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43267 states. [2021-11-25 20:36:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43267 to 43250. [2021-11-25 20:36:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43250 states, 25120 states have (on average 1.2417595541401274) internal successors, (31193), 26185 states have internal predecessors, (31193), 14384 states have call successors, (14384), 3829 states have call predecessors, (14384), 3743 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:36:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43250 states to 43250 states and 60085 transitions. [2021-11-25 20:36:53,065 INFO L78 Accepts]: Start accepts. Automaton has 43250 states and 60085 transitions. Word has length 186 [2021-11-25 20:36:53,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:36:53,066 INFO L470 AbstractCegarLoop]: Abstraction has 43250 states and 60085 transitions. [2021-11-25 20:36:53,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:53,066 INFO L276 IsEmpty]: Start isEmpty. Operand 43250 states and 60085 transitions. [2021-11-25 20:36:53,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 20:36:53,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:36:53,071 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:36:53,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:36:53,071 INFO L402 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)] === [2021-11-25 20:36:53,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:36:53,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1871626772, now seen corresponding path program 1 times [2021-11-25 20:36:53,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:36:53,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375868020] [2021-11-25 20:36:53,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:36:53,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:36:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:36:53,267 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2021-11-25 20:36:53,268 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:36:53,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375868020] [2021-11-25 20:36:53,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375868020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:36:53,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:36:53,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:36:53,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738864933] [2021-11-25 20:36:53,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:36:53,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:36:53,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:36:53,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:36:53,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:36:53,270 INFO L87 Difference]: Start difference. First operand 43250 states and 60085 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:36:56,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:02,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:02,701 INFO L93 Difference]: Finished difference Result 43273 states and 60106 transitions. [2021-11-25 20:37:02,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:37:02,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 192 [2021-11-25 20:37:02,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:02,848 INFO L225 Difference]: With dead ends: 43273 [2021-11-25 20:37:02,848 INFO L226 Difference]: Without dead ends: 43271 [2021-11-25 20:37:02,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:37:02,867 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:02,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-25 20:37:02,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43271 states. [2021-11-25 20:37:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43271 to 43254. [2021-11-25 20:37:04,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43254 states, 25123 states have (on average 1.2417306850296541) internal successors, (31196), 26188 states have internal predecessors, (31196), 14384 states have call successors, (14384), 3830 states have call predecessors, (14384), 3744 states have return successors, (14508), 13824 states have call predecessors, (14508), 14376 states have call successors, (14508) [2021-11-25 20:37:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43254 states to 43254 states and 60088 transitions. [2021-11-25 20:37:04,733 INFO L78 Accepts]: Start accepts. Automaton has 43254 states and 60088 transitions. Word has length 192 [2021-11-25 20:37:04,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:04,734 INFO L470 AbstractCegarLoop]: Abstraction has 43254 states and 60088 transitions. [2021-11-25 20:37:04,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:37:04,735 INFO L276 IsEmpty]: Start isEmpty. Operand 43254 states and 60088 transitions. [2021-11-25 20:37:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-25 20:37:04,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:04,742 INFO L514 BasicCegarLoop]: trace histogram [15, 9, 9, 9, 9, 9, 9, 5, 5, 4, 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] [2021-11-25 20:37:04,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:37:04,743 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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)] === [2021-11-25 20:37:04,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1218104905, now seen corresponding path program 1 times [2021-11-25 20:37:04,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:04,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609822454] [2021-11-25 20:37:04,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:04,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:04,969 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-25 20:37:04,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:04,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609822454] [2021-11-25 20:37:04,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609822454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:04,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:04,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:37:04,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913632432] [2021-11-25 20:37:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:37:04,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:37:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:37:04,971 INFO L87 Difference]: Start difference. First operand 43254 states and 60088 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:37:08,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:13,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:15,750 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:17,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:17,826 INFO L93 Difference]: Finished difference Result 73407 states and 101890 transitions. [2021-11-25 20:37:17,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:37:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 190 [2021-11-25 20:37:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:18,145 INFO L225 Difference]: With dead ends: 73407 [2021-11-25 20:37:18,145 INFO L226 Difference]: Without dead ends: 73405 [2021-11-25 20:37:18,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:37:18,179 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 1586 mSDsluCounter, 6898 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 8219 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:18,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 8219 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1215 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2021-11-25 20:37:18,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73405 states. [2021-11-25 20:37:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73405 to 73332. [2021-11-25 20:37:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73332 states, 42638 states have (on average 1.2425770439514048) internal successors, (52981), 44499 states have internal predecessors, (52981), 24278 states have call successors, (24278), 6591 states have call predecessors, (24278), 6413 states have return successors, (24492), 23262 states have call predecessors, (24492), 24270 states have call successors, (24492) [2021-11-25 20:37:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73332 states to 73332 states and 101751 transitions. [2021-11-25 20:37:21,654 INFO L78 Accepts]: Start accepts. Automaton has 73332 states and 101751 transitions. Word has length 190 [2021-11-25 20:37:21,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:21,655 INFO L470 AbstractCegarLoop]: Abstraction has 73332 states and 101751 transitions. [2021-11-25 20:37:21,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-25 20:37:21,655 INFO L276 IsEmpty]: Start isEmpty. Operand 73332 states and 101751 transitions. [2021-11-25 20:37:21,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-25 20:37:21,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:21,664 INFO L514 BasicCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:37:21,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:37:21,664 INFO L402 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)] === [2021-11-25 20:37:21,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:21,665 INFO L85 PathProgramCache]: Analyzing trace with hash 263027209, now seen corresponding path program 1 times [2021-11-25 20:37:21,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:21,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632792268] [2021-11-25 20:37:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:21,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-11-25 20:37:21,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:21,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632792268] [2021-11-25 20:37:21,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632792268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:21,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:21,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:37:21,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053415727] [2021-11-25 20:37:21,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:21,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:37:21,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:37:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:37:21,903 INFO L87 Difference]: Start difference. First operand 73332 states and 101751 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:37:26,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:32,283 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:33,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:34,477 INFO L93 Difference]: Finished difference Result 73355 states and 101772 transitions. [2021-11-25 20:37:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:37:34,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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 197 [2021-11-25 20:37:34,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:34,791 INFO L225 Difference]: With dead ends: 73355 [2021-11-25 20:37:34,791 INFO L226 Difference]: Without dead ends: 73353 [2021-11-25 20:37:34,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:37:34,820 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1379 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 7597 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:34,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 7597 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1037 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2021-11-25 20:37:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73353 states. [2021-11-25 20:37:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73353 to 73336. [2021-11-25 20:37:38,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73336 states, 42641 states have (on average 1.2425599774864566) internal successors, (52984), 44502 states have internal predecessors, (52984), 24278 states have call successors, (24278), 6592 states have call predecessors, (24278), 6414 states have return successors, (24492), 23262 states have call predecessors, (24492), 24270 states have call successors, (24492) [2021-11-25 20:37:38,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73336 states to 73336 states and 101754 transitions. [2021-11-25 20:37:38,447 INFO L78 Accepts]: Start accepts. Automaton has 73336 states and 101754 transitions. Word has length 197 [2021-11-25 20:37:38,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:37:38,448 INFO L470 AbstractCegarLoop]: Abstraction has 73336 states and 101754 transitions. [2021-11-25 20:37:38,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-11-25 20:37:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 73336 states and 101754 transitions. [2021-11-25 20:37:38,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-25 20:37:38,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:37:38,788 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 9, 9, 9, 9, 9, 9, 9, 9, 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] [2021-11-25 20:37:38,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:37:38,788 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 20:37:38,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:37:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash -140493542, now seen corresponding path program 1 times [2021-11-25 20:37:38,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:37:38,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922716428] [2021-11-25 20:37:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:37:38,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:37:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:37:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-11-25 20:37:39,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:37:39,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922716428] [2021-11-25 20:37:39,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922716428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:37:39,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:37:39,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:37:39,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636018440] [2021-11-25 20:37:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:37:39,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:37:39,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:37:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:37:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:37:39,092 INFO L87 Difference]: Start difference. First operand 73336 states and 101754 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 20:37:42,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:48,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:49,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:51,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:37:51,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:37:51,719 INFO L93 Difference]: Finished difference Result 73419 states and 101847 transitions. [2021-11-25 20:37:51,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:37:51,720 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 201 [2021-11-25 20:37:51,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:37:52,006 INFO L225 Difference]: With dead ends: 73419 [2021-11-25 20:37:52,006 INFO L226 Difference]: Without dead ends: 73417 [2021-11-25 20:37:52,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:37:52,035 INFO L933 BasicCegarLoop]: 2206 mSDtfsCounter, 1594 mSDsluCounter, 6887 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 8208 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:37:52,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 8208 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1226 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-25 20:37:52,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73417 states. [2021-11-25 20:37:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73417 to 73364. [2021-11-25 20:37:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73364 states, 42650 states have (on average 1.2425322391559204) internal successors, (52994), 44511 states have internal predecessors, (52994), 24294 states have call successors, (24294), 6596 states have call predecessors, (24294), 6417 states have return successors, (24504), 23277 states have call predecessors, (24504), 24282 states have call successors, (24504)