./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW --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 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 16:10:16,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:10:16,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:10:16,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:10:16,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:10:16,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:10:16,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:10:16,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:10:16,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:10:16,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:10:16,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:10:16,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:10:16,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:10:16,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:10:16,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:10:16,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:10:16,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:10:16,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:10:16,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:10:16,881 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:10:16,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:10:16,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:10:16,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:10:16,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:10:16,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:10:16,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:10:16,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:10:16,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:10:16,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:10:16,909 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:10:16,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:10:16,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:10:16,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:10:16,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:10:16,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:10:16,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:10:16,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:10:16,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:10:16,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:10:16,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:10:16,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:10:16,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 16:10:16,967 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:10:16,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:10:16,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:10:16,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:10:16,969 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:10:16,969 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:10:16,970 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:10:16,970 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:10:16,970 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:10:16,970 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:10:16,972 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:10:16,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:10:16,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:10:16,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:10:16,972 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:10:16,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:10:16,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:10:16,973 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:10:16,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:10:16,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:10:16,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:10:16,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:10:16,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:10:16,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:10:16,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:10:16,975 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:10:16,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:10:16,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:10:16,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:10:16,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:16,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:10:16,977 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:10:16,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:10:16,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:10:16,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:10:16,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:10:16,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:10:16,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:10:16,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ee317e42bc2e06685ca0df819e5fc98feaca323581d52409851fe6eefd66a2a [2022-11-23 16:10:17,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:10:17,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:10:17,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:10:17,328 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:10:17,328 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:10:17,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-23 16:10:20,440 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:10:21,106 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:10:21,106 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-23 16:10:21,156 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/data/595b2e522/db6ca3930af24621b89582ec3fdcb17c/FLAG3d4f33330 [2022-11-23 16:10:21,174 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/data/595b2e522/db6ca3930af24621b89582ec3fdcb17c [2022-11-23 16:10:21,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:10:21,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:10:21,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:21,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:10:21,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:10:21,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:21" (1/1) ... [2022-11-23 16:10:21,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4113a462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:21, skipping insertion in model container [2022-11-23 16:10:21,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:10:21" (1/1) ... [2022-11-23 16:10:21,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:10:21,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:10:23,985 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-23 16:10:23,992 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-23 16:10:23,992 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-23 16:10:23,993 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-23 16:10:24,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:24,060 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:10:24,531 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323320,323333] [2022-11-23 16:10:24,532 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323489,323502] [2022-11-23 16:10:24,533 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323656,323669] [2022-11-23 16:10:24,533 WARN L237 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_120876f8-2d2a-4152-93fb-67bc0efd0915/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i[323824,323837] [2022-11-23 16:10:24,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:10:24,738 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:10:24,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24 WrapperNode [2022-11-23 16:10:24,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:10:24,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:24,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:10:24,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:10:24,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:24,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,050 INFO L138 Inliner]: procedures = 422, calls = 1985, calls flagged for inlining = 201, calls inlined = 184, statements flattened = 4985 [2022-11-23 16:10:25,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:10:25,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:10:25,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:10:25,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:10:25,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,326 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:10:25,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:10:25,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:10:25,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:10:25,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (1/1) ... [2022-11-23 16:10:25,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:10:25,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:10:25,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:10:25,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_120876f8-2d2a-4152-93fb-67bc0efd0915/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:10:25,460 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 16:10:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 16:10:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 16:10:25,461 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 16:10:25,461 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-23 16:10:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-23 16:10:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_set_filter_mode [2022-11-23 16:10:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_set_filter_mode [2022-11-23 16:10:25,462 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-23 16:10:25,462 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-23 16:10:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 16:10:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 16:10:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_resume [2022-11-23 16:10:25,463 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_resume [2022-11-23 16:10:25,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 16:10:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-23 16:10:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-11-23 16:10:25,464 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-11-23 16:10:25,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-23 16:10:25,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dmfe_board_info [2022-11-23 16:10:25,465 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-23 16:10:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-23 16:10:25,466 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-23 16:10:25,466 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-23 16:10:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2022-11-23 16:10:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2022-11-23 16:10:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-23 16:10:25,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-23 16:10:25,467 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-23 16:10:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-23 16:10:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-23 16:10:25,468 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-23 16:10:25,468 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_reuse_skb [2022-11-23 16:10:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_reuse_skb [2022-11-23 16:10:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-23 16:10:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-23 16:10:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 16:10:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 16:10:25,469 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 16:10:25,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 16:10:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-23 16:10:25,470 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-23 16:10:25,470 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-23 16:10:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-23 16:10:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-23 16:10:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-23 16:10:25,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 16:10:25,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 16:10:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2022-11-23 16:10:25,472 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2022-11-23 16:10:25,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:10:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure poll_dmfe [2022-11-23 16:10:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_dmfe [2022-11-23 16:10:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-23 16:10:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-23 16:10:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 16:10:25,473 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-23 16:10:25,473 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-23 16:10:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-11-23 16:10:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-11-23 16:10:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 16:10:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 16:10:25,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 16:10:25,474 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_remove_one [2022-11-23 16:10:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_remove_one [2022-11-23 16:10:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-23 16:10:25,475 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-23 16:10:25,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:10:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure dm9132_id_table [2022-11-23 16:10:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure dm9132_id_table [2022-11-23 16:10:25,476 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-23 16:10:25,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-23 16:10:25,477 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-23 16:10:25,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-23 16:10:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-23 16:10:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-23 16:10:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 16:10:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 16:10:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_interrupt [2022-11-23 16:10:25,478 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_interrupt [2022-11-23 16:10:25,478 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 16:10:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 16:10:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-23 16:10:25,479 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-23 16:10:25,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 16:10:25,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-23 16:10:25,480 INFO L130 BoogieDeclarations]: Found specification of procedure cal_CRC [2022-11-23 16:10:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure cal_CRC [2022-11-23 16:10:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 16:10:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 16:10:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 16:10:25,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 16:10:25,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 16:10:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 16:10:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-23 16:10:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-23 16:10:25,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 16:10:25,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 16:10:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-23 16:10:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-23 16:10:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 16:10:25,483 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-11-23 16:10:25,483 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-11-23 16:10:25,484 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:10:25,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 16:10:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2022-11-23 16:10:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2022-11-23 16:10:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_free_rxbuffer [2022-11-23 16:10:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_free_rxbuffer [2022-11-23 16:10:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-23 16:10:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-23 16:10:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 16:10:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 16:10:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-23 16:10:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-23 16:10:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-23 16:10:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-23 16:10:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_stop [2022-11-23 16:10:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_stop [2022-11-23 16:10:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:10:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:10:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 16:10:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 16:10:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 16:10:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 16:10:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 16:10:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-23 16:10:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-23 16:10:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-23 16:10:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_open [2022-11-23 16:10:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_open [2022-11-23 16:10:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-23 16:10:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-23 16:10:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-23 16:10:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-23 16:10:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2022-11-23 16:10:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2022-11-23 16:10:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-23 16:10:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-23 16:10:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-23 16:10:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-23 16:10:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-23 16:10:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-23 16:10:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-23 16:10:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-23 16:10:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:10:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 16:10:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 16:10:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 16:10:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_wake [2022-11-23 16:10:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_wake [2022-11-23 16:10:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 16:10:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure dmfe_init_dm910x [2022-11-23 16:10:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure dmfe_init_dm910x [2022-11-23 16:10:25,503 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-23 16:10:25,503 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-23 16:10:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 16:10:25,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 16:10:25,504 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-11-23 16:10:25,504 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-11-23 16:10:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-23 16:10:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-23 16:10:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-23 16:10:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-23 16:10:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:10:25,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 16:10:25,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 16:10:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-23 16:10:25,506 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-23 16:10:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-23 16:10:25,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_dmfe_cleanup_module_14_2 [2022-11-23 16:10:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2022-11-23 16:10:25,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2022-11-23 16:10:25,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 16:10:25,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 16:10:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-23 16:10:25,507 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-23 16:10:25,507 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 16:10:25,509 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 16:10:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 16:10:25,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 16:10:25,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 16:10:26,366 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:10:26,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:10:26,768 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 16:10:30,181 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 16:10:30,259 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:10:32,002 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:10:32,002 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 16:10:32,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:32 BoogieIcfgContainer [2022-11-23 16:10:32,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:10:32,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:10:32,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:10:32,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:10:32,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:10:21" (1/3) ... [2022-11-23 16:10:32,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043dbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:32, skipping insertion in model container [2022-11-23 16:10:32,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:10:24" (2/3) ... [2022-11-23 16:10:32,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3043dbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:10:32, skipping insertion in model container [2022-11-23 16:10:32,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:10:32" (3/3) ... [2022-11-23 16:10:32,015 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-dmfe.cil.i [2022-11-23 16:10:32,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:10:32,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 16:10:32,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:10:32,145 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14d79050, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:10:32,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 16:10:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) [2022-11-23 16:10:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-23 16:10:32,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:32,187 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:32,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:10:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:32,195 INFO L85 PathProgramCache]: Analyzing trace with hash 605554581, now seen corresponding path program 1 times [2022-11-23 16:10:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:32,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135563211] [2022-11-23 16:10:32,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 16:10:33,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:33,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135563211] [2022-11-23 16:10:33,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135563211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:33,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:33,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004549910] [2022-11-23 16:10:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:33,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:33,110 INFO L87 Difference]: Start difference. First operand has 1182 states, 677 states have (on average 1.2983751846381093) internal successors, (879), 700 states have internal predecessors, (879), 420 states have call successors, (420), 83 states have call predecessors, (420), 82 states have return successors, (414), 405 states have call predecessors, (414), 414 states have call successors, (414) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:35,945 INFO L93 Difference]: Finished difference Result 3430 states and 5034 transitions. [2022-11-23 16:10:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2022-11-23 16:10:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:36,007 INFO L225 Difference]: With dead ends: 3430 [2022-11-23 16:10:36,008 INFO L226 Difference]: Without dead ends: 2255 [2022-11-23 16:10:36,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:36,033 INFO L413 NwaCegarLoop]: 1832 mSDtfsCounter, 1597 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:36,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3241 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 16:10:36,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-11-23 16:10:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2251. [2022-11-23 16:10:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2251 states, 1301 states have (on average 1.2890084550345888) internal successors, (1677), 1346 states have internal predecessors, (1677), 787 states have call successors, (787), 161 states have call predecessors, (787), 160 states have return successors, (783), 765 states have call predecessors, (783), 783 states have call successors, (783) [2022-11-23 16:10:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2251 states to 2251 states and 3247 transitions. [2022-11-23 16:10:36,321 INFO L78 Accepts]: Start accepts. Automaton has 2251 states and 3247 transitions. Word has length 101 [2022-11-23 16:10:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:36,324 INFO L495 AbstractCegarLoop]: Abstraction has 2251 states and 3247 transitions. [2022-11-23 16:10:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2251 states and 3247 transitions. [2022-11-23 16:10:36,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 16:10:36,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:36,333 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:10:36,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:10:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1879988471, now seen corresponding path program 1 times [2022-11-23 16:10:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:36,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054827576] [2022-11-23 16:10:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 16:10:36,684 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:36,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054827576] [2022-11-23 16:10:36,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054827576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:36,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:36,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:36,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920214016] [2022-11-23 16:10:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:36,688 INFO L87 Difference]: Start difference. First operand 2251 states and 3247 transitions. 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:10:39,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:39,959 INFO L93 Difference]: Finished difference Result 6661 states and 9617 transitions. [2022-11-23 16:10:39,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:39,960 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-23 16:10:39,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:40,049 INFO L225 Difference]: With dead ends: 6661 [2022-11-23 16:10:40,050 INFO L226 Difference]: Without dead ends: 4427 [2022-11-23 16:10:40,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:40,065 INFO L413 NwaCegarLoop]: 1864 mSDtfsCounter, 1640 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:40,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 3271 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-23 16:10:40,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4427 states. [2022-11-23 16:10:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4427 to 4397. [2022-11-23 16:10:40,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 2555 states have (on average 1.2915851272015655) internal successors, (3300), 2649 states have internal predecessors, (3300), 1522 states have call successors, (1522), 320 states have call predecessors, (1522), 317 states have return successors, (1528), 1471 states have call predecessors, (1528), 1518 states have call successors, (1528) [2022-11-23 16:10:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6350 transitions. [2022-11-23 16:10:40,411 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6350 transitions. Word has length 105 [2022-11-23 16:10:40,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:40,412 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 6350 transitions. [2022-11-23 16:10:40,413 INFO L496 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 16:10:40,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6350 transitions. [2022-11-23 16:10:40,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 16:10:40,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:40,416 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:40,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:10:40,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:10:40,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2104025459, now seen corresponding path program 1 times [2022-11-23 16:10:40,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:40,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950084710] [2022-11-23 16:10:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 16:10:40,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950084710] [2022-11-23 16:10:40,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950084710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:40,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:40,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:40,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669252445] [2022-11-23 16:10:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:40,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:40,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:40,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:40,743 INFO L87 Difference]: Start difference. First operand 4397 states and 6350 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-11-23 16:10:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:43,845 INFO L93 Difference]: Finished difference Result 12551 states and 18094 transitions. [2022-11-23 16:10:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 105 [2022-11-23 16:10:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:43,907 INFO L225 Difference]: With dead ends: 12551 [2022-11-23 16:10:43,907 INFO L226 Difference]: Without dead ends: 8171 [2022-11-23 16:10:43,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:43,936 INFO L413 NwaCegarLoop]: 1889 mSDtfsCounter, 1454 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:43,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 3289 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 16:10:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8171 states. [2022-11-23 16:10:44,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8171 to 8137. [2022-11-23 16:10:44,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8137 states, 4739 states have (on average 1.293943870014771) internal successors, (6132), 4921 states have internal predecessors, (6132), 2784 states have call successors, (2784), 618 states have call predecessors, (2784), 611 states have return successors, (2806), 2681 states have call predecessors, (2806), 2780 states have call successors, (2806) [2022-11-23 16:10:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8137 states to 8137 states and 11722 transitions. [2022-11-23 16:10:44,503 INFO L78 Accepts]: Start accepts. Automaton has 8137 states and 11722 transitions. Word has length 105 [2022-11-23 16:10:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:44,506 INFO L495 AbstractCegarLoop]: Abstraction has 8137 states and 11722 transitions. [2022-11-23 16:10:44,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-11-23 16:10:44,507 INFO L276 IsEmpty]: Start isEmpty. Operand 8137 states and 11722 transitions. [2022-11-23 16:10:44,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-23 16:10:44,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:44,516 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:44,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:10:44,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:10:44,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:44,520 INFO L85 PathProgramCache]: Analyzing trace with hash 50789912, now seen corresponding path program 1 times [2022-11-23 16:10:44,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:44,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538255877] [2022-11-23 16:10:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:44,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 16:10:45,133 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:45,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538255877] [2022-11-23 16:10:45,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538255877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:45,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:45,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 16:10:45,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897178494] [2022-11-23 16:10:45,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:45,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:10:45,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:10:45,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:10:45,135 INFO L87 Difference]: Start difference. First operand 8137 states and 11722 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:53,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:53,105 INFO L93 Difference]: Finished difference Result 18696 states and 26839 transitions. [2022-11-23 16:10:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:10:53,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 108 [2022-11-23 16:10:53,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:53,178 INFO L225 Difference]: With dead ends: 18696 [2022-11-23 16:10:53,178 INFO L226 Difference]: Without dead ends: 10576 [2022-11-23 16:10:53,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-23 16:10:53,223 INFO L413 NwaCegarLoop]: 2162 mSDtfsCounter, 3550 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3649 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:53,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3649 Valid, 5171 Invalid, 2946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [503 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-23 16:10:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10576 states. [2022-11-23 16:10:53,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10576 to 10504. [2022-11-23 16:10:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10504 states, 6287 states have (on average 1.3034833783998727) internal successors, (8195), 6538 states have internal predecessors, (8195), 3375 states have call successors, (3375), 854 states have call predecessors, (3375), 839 states have return successors, (3384), 3221 states have call predecessors, (3384), 3371 states have call successors, (3384) [2022-11-23 16:10:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14954 transitions. [2022-11-23 16:10:53,998 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14954 transitions. Word has length 108 [2022-11-23 16:10:53,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:53,999 INFO L495 AbstractCegarLoop]: Abstraction has 10504 states and 14954 transitions. [2022-11-23 16:10:53,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:53,999 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14954 transitions. [2022-11-23 16:10:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 16:10:54,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:54,002 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:10:54,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:10:54,002 INFO L420 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)] === [2022-11-23 16:10:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:54,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1584871889, now seen corresponding path program 1 times [2022-11-23 16:10:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:54,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381383963] [2022-11-23 16:10:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:54,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2022-11-23 16:10:54,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:54,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381383963] [2022-11-23 16:10:54,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381383963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:54,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:54,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:54,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380525488] [2022-11-23 16:10:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:54,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:54,213 INFO L87 Difference]: Start difference. First operand 10504 states and 14954 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:10:57,689 INFO L93 Difference]: Finished difference Result 27897 states and 39637 transitions. [2022-11-23 16:10:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:10:57,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 110 [2022-11-23 16:10:57,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:10:57,787 INFO L225 Difference]: With dead ends: 27897 [2022-11-23 16:10:57,788 INFO L226 Difference]: Without dead ends: 17410 [2022-11-23 16:10:57,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:57,837 INFO L413 NwaCegarLoop]: 1814 mSDtfsCounter, 1520 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 16:10:57,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 3210 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 16:10:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17410 states. [2022-11-23 16:10:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17410 to 17378. [2022-11-23 16:10:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17378 states, 10333 states have (on average 1.2898480596148263) internal successors, (13328), 10738 states have internal predecessors, (13328), 5622 states have call successors, (5622), 1449 states have call predecessors, (5622), 1420 states have return successors, (5647), 5349 states have call predecessors, (5647), 5618 states have call successors, (5647) [2022-11-23 16:10:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17378 states to 17378 states and 24597 transitions. [2022-11-23 16:10:59,006 INFO L78 Accepts]: Start accepts. Automaton has 17378 states and 24597 transitions. Word has length 110 [2022-11-23 16:10:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:10:59,008 INFO L495 AbstractCegarLoop]: Abstraction has 17378 states and 24597 transitions. [2022-11-23 16:10:59,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-23 16:10:59,009 INFO L276 IsEmpty]: Start isEmpty. Operand 17378 states and 24597 transitions. [2022-11-23 16:10:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-23 16:10:59,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:10:59,016 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 8, 8, 8, 8, 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] [2022-11-23 16:10:59,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:10:59,018 INFO L420 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)] === [2022-11-23 16:10:59,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:10:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash -617306370, now seen corresponding path program 1 times [2022-11-23 16:10:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:10:59,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812213399] [2022-11-23 16:10:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:10:59,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:10:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:10:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2022-11-23 16:10:59,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:10:59,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812213399] [2022-11-23 16:10:59,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812213399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:10:59,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:10:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:10:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153442220] [2022-11-23 16:10:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:10:59,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:10:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:10:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:10:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:10:59,246 INFO L87 Difference]: Start difference. First operand 17378 states and 24597 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:11:03,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:03,131 INFO L93 Difference]: Finished difference Result 50976 states and 72189 transitions. [2022-11-23 16:11:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:11:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2022-11-23 16:11:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:03,360 INFO L225 Difference]: With dead ends: 50976 [2022-11-23 16:11:03,360 INFO L226 Difference]: Without dead ends: 33615 [2022-11-23 16:11:03,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:11:03,458 INFO L413 NwaCegarLoop]: 2036 mSDtfsCounter, 1647 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:03,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 3469 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-23 16:11:03,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33615 states. [2022-11-23 16:11:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33615 to 33541. [2022-11-23 16:11:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33541 states, 19920 states have (on average 1.2901606425702812) internal successors, (25700), 20748 states have internal predecessors, (25700), 10865 states have call successors, (10865), 2810 states have call predecessors, (10865), 2753 states have return successors, (10919), 10292 states have call predecessors, (10919), 10861 states have call successors, (10919) [2022-11-23 16:11:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33541 states to 33541 states and 47484 transitions. [2022-11-23 16:11:05,628 INFO L78 Accepts]: Start accepts. Automaton has 33541 states and 47484 transitions. Word has length 123 [2022-11-23 16:11:05,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:05,629 INFO L495 AbstractCegarLoop]: Abstraction has 33541 states and 47484 transitions. [2022-11-23 16:11:05,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-23 16:11:05,629 INFO L276 IsEmpty]: Start isEmpty. Operand 33541 states and 47484 transitions. [2022-11-23 16:11:05,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-23 16:11:05,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:05,633 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:05,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:11:05,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:05,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1018813933, now seen corresponding path program 1 times [2022-11-23 16:11:05,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:05,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211322867] [2022-11-23 16:11:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:05,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-23 16:11:06,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:06,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211322867] [2022-11-23 16:11:06,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211322867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:06,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:06,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557131091] [2022-11-23 16:11:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:06,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:06,153 INFO L87 Difference]: Start difference. First operand 33541 states and 47484 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:11:08,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:11:12,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:12,115 INFO L93 Difference]: Finished difference Result 38323 states and 54129 transitions. [2022-11-23 16:11:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:12,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-23 16:11:12,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:12,315 INFO L225 Difference]: With dead ends: 38323 [2022-11-23 16:11:12,316 INFO L226 Difference]: Without dead ends: 38321 [2022-11-23 16:11:12,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:12,343 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 1629 mSDsluCounter, 3423 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4960 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:12,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 4960 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 834 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 16:11:12,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38321 states. [2022-11-23 16:11:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38321 to 38289. [2022-11-23 16:11:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38289 states, 22583 states have (on average 1.284993136430058) internal successors, (29019), 23459 states have internal predecessors, (29019), 12495 states have call successors, (12495), 3265 states have call predecessors, (12495), 3208 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:11:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38289 states to 38289 states and 54063 transitions. [2022-11-23 16:11:14,986 INFO L78 Accepts]: Start accepts. Automaton has 38289 states and 54063 transitions. Word has length 146 [2022-11-23 16:11:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:14,987 INFO L495 AbstractCegarLoop]: Abstraction has 38289 states and 54063 transitions. [2022-11-23 16:11:14,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 16:11:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 38289 states and 54063 transitions. [2022-11-23 16:11:14,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-23 16:11:14,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:14,991 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:14,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:11:14,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:14,992 INFO L85 PathProgramCache]: Analyzing trace with hash 983805278, now seen corresponding path program 1 times [2022-11-23 16:11:14,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624988855] [2022-11-23 16:11:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:14,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:15,426 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-23 16:11:15,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:15,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624988855] [2022-11-23 16:11:15,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624988855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:15,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:15,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:15,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891100962] [2022-11-23 16:11:15,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:15,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:15,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:15,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:15,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:15,428 INFO L87 Difference]: Start difference. First operand 38289 states and 54063 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, (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) [2022-11-23 16:11:21,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:21,292 INFO L93 Difference]: Finished difference Result 38295 states and 54068 transitions. [2022-11-23 16:11:21,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:21,293 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, (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 151 [2022-11-23 16:11:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:21,509 INFO L225 Difference]: With dead ends: 38295 [2022-11-23 16:11:21,509 INFO L226 Difference]: Without dead ends: 38293 [2022-11-23 16:11:21,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:21,533 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:21,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-23 16:11:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38293 states. [2022-11-23 16:11:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38293 to 38293. [2022-11-23 16:11:23,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38293 states, 22586 states have (on average 1.2849552820331178) internal successors, (29022), 23462 states have internal predecessors, (29022), 12495 states have call successors, (12495), 3266 states have call predecessors, (12495), 3209 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:11:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38293 states to 38293 states and 54066 transitions. [2022-11-23 16:11:24,158 INFO L78 Accepts]: Start accepts. Automaton has 38293 states and 54066 transitions. Word has length 151 [2022-11-23 16:11:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:24,161 INFO L495 AbstractCegarLoop]: Abstraction has 38293 states and 54066 transitions. [2022-11-23 16:11:24,161 INFO L496 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, (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) [2022-11-23 16:11:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 38293 states and 54066 transitions. [2022-11-23 16:11:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-23 16:11:24,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:24,164 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:24,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 16:11:24,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2028105549, now seen corresponding path program 1 times [2022-11-23 16:11:24,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:24,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412003896] [2022-11-23 16:11:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-11-23 16:11:24,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412003896] [2022-11-23 16:11:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412003896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:24,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:24,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064875076] [2022-11-23 16:11:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:24,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:24,564 INFO L87 Difference]: Start difference. First operand 38293 states and 54066 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 16:11:26,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:11:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:31,043 INFO L93 Difference]: Finished difference Result 38299 states and 54071 transitions. [2022-11-23 16:11:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:31,045 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 156 [2022-11-23 16:11:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:31,209 INFO L225 Difference]: With dead ends: 38299 [2022-11-23 16:11:31,209 INFO L226 Difference]: Without dead ends: 38297 [2022-11-23 16:11:31,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:31,234 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:31,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1644 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-23 16:11:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38297 states. [2022-11-23 16:11:33,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38297 to 38297. [2022-11-23 16:11:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38297 states, 22589 states have (on average 1.2849174376909116) internal successors, (29025), 23465 states have internal predecessors, (29025), 12495 states have call successors, (12495), 3267 states have call predecessors, (12495), 3210 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:11:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38297 states to 38297 states and 54069 transitions. [2022-11-23 16:11:34,000 INFO L78 Accepts]: Start accepts. Automaton has 38297 states and 54069 transitions. Word has length 156 [2022-11-23 16:11:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:34,000 INFO L495 AbstractCegarLoop]: Abstraction has 38297 states and 54069 transitions. [2022-11-23 16:11:34,001 INFO L496 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, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-23 16:11:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 38297 states and 54069 transitions. [2022-11-23 16:11:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-23 16:11:34,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:34,004 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 16:11:34,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash 193106494, now seen corresponding path program 1 times [2022-11-23 16:11:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:34,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731337400] [2022-11-23 16:11:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-11-23 16:11:34,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:34,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731337400] [2022-11-23 16:11:34,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731337400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:34,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:34,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:34,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19095908] [2022-11-23 16:11:34,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:34,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:34,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:34,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:34,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:34,400 INFO L87 Difference]: Start difference. First operand 38297 states and 54069 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 16:11:35,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:11:40,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:40,253 INFO L93 Difference]: Finished difference Result 38303 states and 54074 transitions. [2022-11-23 16:11:40,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:40,254 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-23 16:11:40,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:40,387 INFO L225 Difference]: With dead ends: 38303 [2022-11-23 16:11:40,387 INFO L226 Difference]: Without dead ends: 38301 [2022-11-23 16:11:40,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:40,404 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1643 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:40,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1643 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-23 16:11:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38301 states. [2022-11-23 16:11:42,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38301 to 38301. [2022-11-23 16:11:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38301 states, 22592 states have (on average 1.2848796033994334) internal successors, (29028), 23468 states have internal predecessors, (29028), 12495 states have call successors, (12495), 3268 states have call predecessors, (12495), 3211 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:11:43,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38301 states to 38301 states and 54072 transitions. [2022-11-23 16:11:43,050 INFO L78 Accepts]: Start accepts. Automaton has 38301 states and 54072 transitions. Word has length 161 [2022-11-23 16:11:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:43,051 INFO L495 AbstractCegarLoop]: Abstraction has 38301 states and 54072 transitions. [2022-11-23 16:11:43,051 INFO L496 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, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 16:11:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 38301 states and 54072 transitions. [2022-11-23 16:11:43,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-23 16:11:43,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:43,057 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 16:11:43,057 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:43,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash 664685946, now seen corresponding path program 1 times [2022-11-23 16:11:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404562085] [2022-11-23 16:11:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:43,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2022-11-23 16:11:43,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:43,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404562085] [2022-11-23 16:11:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404562085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:43,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322910672] [2022-11-23 16:11:43,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:43,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:43,539 INFO L87 Difference]: Start difference. First operand 38301 states and 54072 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (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) [2022-11-23 16:11:45,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:11:46,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 16:11:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:49,882 INFO L93 Difference]: Finished difference Result 38307 states and 54077 transitions. [2022-11-23 16:11:49,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:49,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (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 169 [2022-11-23 16:11:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:50,009 INFO L225 Difference]: With dead ends: 38307 [2022-11-23 16:11:50,009 INFO L226 Difference]: Without dead ends: 38305 [2022-11-23 16:11:50,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:50,026 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1633 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:50,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-23 16:11:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38305 states. [2022-11-23 16:11:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38305 to 38305. [2022-11-23 16:11:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38305 states, 22595 states have (on average 1.2848417791546802) internal successors, (29031), 23471 states have internal predecessors, (29031), 12495 states have call successors, (12495), 3269 states have call predecessors, (12495), 3212 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:11:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38305 states to 38305 states and 54075 transitions. [2022-11-23 16:11:52,219 INFO L78 Accepts]: Start accepts. Automaton has 38305 states and 54075 transitions. Word has length 169 [2022-11-23 16:11:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:11:52,219 INFO L495 AbstractCegarLoop]: Abstraction has 38305 states and 54075 transitions. [2022-11-23 16:11:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (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) [2022-11-23 16:11:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 38305 states and 54075 transitions. [2022-11-23 16:11:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-23 16:11:52,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:11:52,222 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:11:52,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 16:11:52,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:11:52,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:11:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash -123564258, now seen corresponding path program 1 times [2022-11-23 16:11:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:11:52,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378565407] [2022-11-23 16:11:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:11:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:11:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:11:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-11-23 16:11:52,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:11:52,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378565407] [2022-11-23 16:11:52,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378565407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:11:52,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:11:52,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:11:52,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512185409] [2022-11-23 16:11:52,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:11:52,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:11:52,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:11:52,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:11:52,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:11:52,607 INFO L87 Difference]: Start difference. First operand 38305 states and 54075 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) [2022-11-23 16:11:57,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:11:57,729 INFO L93 Difference]: Finished difference Result 38311 states and 54080 transitions. [2022-11-23 16:11:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:11:57,730 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 171 [2022-11-23 16:11:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:11:57,849 INFO L225 Difference]: With dead ends: 38311 [2022-11-23 16:11:57,849 INFO L226 Difference]: Without dead ends: 38309 [2022-11-23 16:11:57,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:11:57,864 INFO L413 NwaCegarLoop]: 1435 mSDtfsCounter, 1634 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1641 SdHoareTripleChecker+Valid, 4285 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 16:11:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1641 Valid, 4285 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 16:11:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38309 states. [2022-11-23 16:12:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38309 to 38309. [2022-11-23 16:12:00,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38309 states, 22598 states have (on average 1.2848039649526506) internal successors, (29034), 23474 states have internal predecessors, (29034), 12495 states have call successors, (12495), 3270 states have call predecessors, (12495), 3213 states have return successors, (12549), 11906 states have call predecessors, (12549), 12491 states have call successors, (12549) [2022-11-23 16:12:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38309 states to 38309 states and 54078 transitions. [2022-11-23 16:12:00,185 INFO L78 Accepts]: Start accepts. Automaton has 38309 states and 54078 transitions. Word has length 171 [2022-11-23 16:12:00,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:12:00,186 INFO L495 AbstractCegarLoop]: Abstraction has 38309 states and 54078 transitions. [2022-11-23 16:12:00,186 INFO L496 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) [2022-11-23 16:12:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 38309 states and 54078 transitions. [2022-11-23 16:12:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 16:12:00,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:12:00,191 INFO L195 NwaCegarLoop]: trace histogram [12, 8, 8, 8, 8, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:12:00,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 16:12:00,191 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 16:12:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:12:00,192 INFO L85 PathProgramCache]: Analyzing trace with hash 307897843, now seen corresponding path program 1 times [2022-11-23 16:12:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:12:00,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851484655] [2022-11-23 16:12:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:12:00,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:12:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:12:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-23 16:12:00,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:12:00,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851484655] [2022-11-23 16:12:00,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851484655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:12:00,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:12:00,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 16:12:00,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30797057] [2022-11-23 16:12:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:12:00,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 16:12:00,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:12:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 16:12:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:12:00,561 INFO L87 Difference]: Start difference. First operand 38309 states and 54078 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)