./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-wireless-rtl818x-rtl8180-rtl8180.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P --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 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:16:50,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:16:50,241 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:16:50,298 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:16:50,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:16:50,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:16:50,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:16:50,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:16:50,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:16:50,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:16:50,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:16:50,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:16:50,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:16:50,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:16:50,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:16:50,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:16:50,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:16:50,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:16:50,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:16:50,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:16:50,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:16:50,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:16:50,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:16:50,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:16:50,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:16:50,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:16:50,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:16:50,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:16:50,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:16:50,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:16:50,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:16:50,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:16:50,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:16:50,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:16:50,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:16:50,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:16:50,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:16:50,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:16:50,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:16:50,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:16:50,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:16:50,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:16:50,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:16:50,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:16:50,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:16:50,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:16:50,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:16:50,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:16:50,436 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:16:50,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:16:50,437 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:16:50,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:16:50,438 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:16:50,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:16:50,438 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:16:50,438 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:16:50,439 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:16:50,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:16:50,439 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:16:50,439 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:16:50,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:16:50,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:16:50,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:16:50,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:16:50,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:16:50,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:16:50,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:16:50,441 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:16:50,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:16:50,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:16:50,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:16:50,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:50,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:16:50,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:16:50,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:16:50,445 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:16:50,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:16:50,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:16:50,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:16:50,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:16:50,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a5abe7d84ebfba3a3d05a8884a5cfb8bfd1e0698553d38fcfc4a2d2724f4159 [2021-11-20 23:16:50,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:16:50,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:16:50,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:16:50,762 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:16:50,762 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:16:50,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-20 23:16:50,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/data/14306a137/fa0565934f69417b93120c589df220ac/FLAG16d8774ae [2021-11-20 23:16:51,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:16:51,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-20 23:16:51,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/data/14306a137/fa0565934f69417b93120c589df220ac/FLAG16d8774ae [2021-11-20 23:16:52,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/data/14306a137/fa0565934f69417b93120c589df220ac [2021-11-20 23:16:52,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:16:52,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:16:52,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:52,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:16:52,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:16:52,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:52" (1/1) ... [2021-11-20 23:16:52,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12043bd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:52, skipping insertion in model container [2021-11-20 23:16:52,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:52" (1/1) ... [2021-11-20 23:16:52,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:16:52,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:16:56,669 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-20 23:16:56,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-20 23:16:56,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-20 23:16:56,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-20 23:16:56,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:56,777 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:16:57,213 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459471,459484] [2021-11-20 23:16:57,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459640,459653] [2021-11-20 23:16:57,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459807,459820] [2021-11-20 23:16:57,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i[459975,459988] [2021-11-20 23:16:57,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:57,510 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:16:57,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57 WrapperNode [2021-11-20 23:16:57,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:57,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:57,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:16:57,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:16:57,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:57,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:57,980 INFO L137 Inliner]: procedures = 522, calls = 3749, calls flagged for inlining = 276, calls inlined = 260, statements flattened = 6740 [2021-11-20 23:16:57,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:57,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:16:57,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:16:57,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:16:57,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:57,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:16:58,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:16:58,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:16:58,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:16:58,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (1/1) ... [2021-11-20 23:16:58,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:58,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:58,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:16:58,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5dab03a-049c-4d98-9990-a3cce351e43c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:16:58,685 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread8 [2021-11-20 23:16:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread8 [2021-11-20 23:16:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_frequency_to_channel [2021-11-20 23:16:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_frequency_to_channel [2021-11-20 23:16:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_tx_ring [2021-11-20 23:16:58,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_tx_ring [2021-11-20 23:16:58,686 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite8 [2021-11-20 23:16:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite8 [2021-11-20 23:16:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:16:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:16:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:16:58,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:16:58,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:16:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:16:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_init [2021-11-20 23:16:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_init [2021-11-20 23:16:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_calc_rssi [2021-11-20 23:16:58,688 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_calc_rssi [2021-11-20 23:16:58,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:16:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:16:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:16:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:16:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:16:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:16:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:16:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:16:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_write_phy_antenna [2021-11-20 23:16:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_write_phy_antenna [2021-11-20 23:16:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_init [2021-11-20 23:16:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_init [2021-11-20 23:16:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread32 [2021-11-20 23:16:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread32 [2021-11-20 23:16:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:16:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:16:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_free_rx_ring [2021-11-20 23:16:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_free_rx_ring [2021-11-20 23:16:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_bss_info_changed [2021-11-20 23:16:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_bss_info_changed [2021-11-20 23:16:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_calc_rssi [2021-11-20 23:16:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_calc_rssi [2021-11-20 23:16:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:16:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:16:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 23:16:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 23:16:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2021-11-20 23:16:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_rtl8180_driver_exit_14_2 [2021-11-20 23:16:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:16:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_set_tx_power [2021-11-20 23:16:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_set_tx_power [2021-11-20 23:16:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_ioread16 [2021-11-20 23:16:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_ioread16 [2021-11-20 23:16:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_set_anaparam [2021-11-20 23:16:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_set_anaparam [2021-11-20 23:16:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:16:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_tx_rate [2021-11-20 23:16:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_tx_rate [2021-11-20 23:16:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_conf_erp [2021-11-20 23:16:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_conf_erp [2021-11-20 23:16:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:16:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:16:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:16:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:16:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_stop [2021-11-20 23:16:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_stop [2021-11-20 23:16:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:16:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:16:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:16:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_stop [2021-11-20 23:16:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_stop [2021-11-20 23:16:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:16:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:16:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:16:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_get_tsf [2021-11-20 23:16:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_get_tsf [2021-11-20 23:16:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:16:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:16:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:16:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:16:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:16:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:16:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:16:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:16:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-20 23:16:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-20 23:16:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_add_interface [2021-11-20 23:16:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_add_interface [2021-11-20 23:16:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_write_phy_antenna [2021-11-20 23:16:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_write_phy_antenna [2021-11-20 23:16:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:16:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:16:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:16:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:16:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_channel [2021-11-20 23:16:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_channel [2021-11-20 23:16:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_set_tx_power [2021-11-20 23:16:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_set_tx_power [2021-11-20 23:16:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_set_channel [2021-11-20 23:16:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_set_channel [2021-11-20 23:16:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:16:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:16:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-20 23:16:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-20 23:16:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:16:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:16:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:16:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:16:58,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:16:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:16:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:16:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:16:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_free_hw [2021-11-20 23:16:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_free_hw [2021-11-20 23:16:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_cck [2021-11-20 23:16:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_cck [2021-11-20 23:16:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:16:58,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:16:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:16:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:16:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:16:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:16:58,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:16:58,722 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:16:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:16:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure ieee80211_get_rts_cts_rate [2021-11-20 23:16:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ieee80211_get_rts_cts_rate [2021-11-20 23:16:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_start [2021-11-20 23:16:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_start [2021-11-20 23:16:58,723 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_rf_set_channel [2021-11-20 23:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_rf_set_channel [2021-11-20 23:16:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:16:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_resume [2021-11-20 23:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_resume [2021-11-20 23:16:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write_phy_ofdm [2021-11-20 23:16:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write_phy_ofdm [2021-11-20 23:16:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_rtl8180_priv [2021-11-20 23:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_rtl8180_priv [2021-11-20 23:16:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_calc_rssi [2021-11-20 23:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_calc_rssi [2021-11-20 23:16:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_write_phy [2021-11-20 23:16:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_write_phy [2021-11-20 23:16:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2021-11-20 23:16:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2021-11-20 23:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:16:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:16:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:16:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure write_sa2400 [2021-11-20 23:16:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure write_sa2400 [2021-11-20 23:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:16:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_stop [2021-11-20 23:16:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_stop [2021-11-20 23:16:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:16:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:16:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ieee80211_free_hw [2021-11-20 23:16:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ieee80211_free_hw [2021-11-20 23:16:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_rf_init [2021-11-20 23:16:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_rf_init [2021-11-20 23:16:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225z2_rf_init [2021-11-20 23:16:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225z2_rf_init [2021-11-20 23:16:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove [2021-11-20 23:16:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove [2021-11-20 23:16:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2021-11-20 23:16:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2021-11-20 23:16:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:16:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:16:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:16:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure sa2400_rf_stop [2021-11-20 23:16:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure sa2400_rf_stop [2021-11-20 23:16:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:16:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:16:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-20 23:16:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-20 23:16:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_write [2021-11-20 23:16:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_write [2021-11-20 23:16:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:16:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure grf5101_write_phy_antenna [2021-11-20 23:16:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure grf5101_write_phy_antenna [2021-11-20 23:16:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:16:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:16:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-20 23:16:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-20 23:16:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:16:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:16:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write_max2820 [2021-11-20 23:16:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure write_max2820 [2021-11-20 23:16:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure write_grf5101 [2021-11-20 23:16:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure write_grf5101 [2021-11-20 23:16:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_remove_interface [2021-11-20 23:16:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_remove_interface [2021-11-20 23:16:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2021-11-20 23:16:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2021-11-20 23:16:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2021-11-20 23:16:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2021-11-20 23:16:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8225_read [2021-11-20 23:16:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8225_read [2021-11-20 23:16:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure max2820_rf_set_channel [2021-11-20 23:16:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure max2820_rf_set_channel [2021-11-20 23:16:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:16:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_read [2021-11-20 23:16:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_read [2021-11-20 23:16:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2021-11-20 23:16:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2021-11-20 23:16:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:16:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:16:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_handle_tx [2021-11-20 23:16:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_handle_tx [2021-11-20 23:16:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_configure_filter [2021-11-20 23:16:58,737 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_configure_filter [2021-11-20 23:16:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2021-11-20 23:16:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_rtl8180_priv [2021-11-20 23:16:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2021-11-20 23:16:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2021-11-20 23:16:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-11-20 23:16:58,738 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-11-20 23:16:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:16:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:16:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_prepare_multicast [2021-11-20 23:16:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_prepare_multicast [2021-11-20 23:16:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:16:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:16:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite32 [2021-11-20 23:16:58,739 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite32 [2021-11-20 23:16:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_93cx6_multiread [2021-11-20 23:16:58,740 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_93cx6_multiread [2021-11-20 23:16:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:16:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:16:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-20 23:16:58,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-20 23:16:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_config [2021-11-20 23:16:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_config [2021-11-20 23:16:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:16:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:16:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure rtl8180_tx [2021-11-20 23:16:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl8180_tx [2021-11-20 23:16:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure rtl818x_iowrite16 [2021-11-20 23:16:58,746 INFO L138 BoogieDeclarations]: Found implementation of procedure rtl818x_iowrite16 [2021-11-20 23:16:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure IEEE80211_SKB_CB [2021-11-20 23:16:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure IEEE80211_SKB_CB [2021-11-20 23:16:59,973 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:16:59,977 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:17:00,199 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:17:09,254 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:17:09,461 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:17:11,114 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:17:11,115 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 23:17:11,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:11 BoogieIcfgContainer [2021-11-20 23:17:11,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:17:11,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:17:11,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:17:11,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:17:11,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:52" (1/3) ... [2021-11-20 23:17:11,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737d315e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:11, skipping insertion in model container [2021-11-20 23:17:11,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:57" (2/3) ... [2021-11-20 23:17:11,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737d315e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:17:11, skipping insertion in model container [2021-11-20 23:17:11,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:17:11" (3/3) ... [2021-11-20 23:17:11,128 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rtl818x-rtl8180-rtl8180.cil.i [2021-11-20 23:17:11,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:17:11,134 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:17:11,199 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:17:11,218 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 23:17:11,223 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:17:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) [2021-11-20 23:17:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-20 23:17:11,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:11,348 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:11,349 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:11,354 INFO L85 PathProgramCache]: Analyzing trace with hash 298194244, now seen corresponding path program 1 times [2021-11-20 23:17:11,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:11,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36495507] [2021-11-20 23:17:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:11,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-11-20 23:17:12,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:12,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36495507] [2021-11-20 23:17:12,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36495507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:12,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:12,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:17:12,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408656643] [2021-11-20 23:17:12,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:12,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:12,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:12,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:12,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:12,344 INFO L87 Difference]: Start difference. First operand has 2498 states, 1174 states have (on average 1.2589437819420783) internal successors, (1478), 1212 states have internal predecessors, (1478), 1209 states have call successors, (1209), 113 states have call predecessors, (1209), 112 states have return successors, (1201), 1184 states have call predecessors, (1201), 1201 states have call successors, (1201) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-20 23:17:13,791 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:17,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:19,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:20,864 INFO L93 Difference]: Finished difference Result 7268 states and 11407 transitions. [2021-11-20 23:17:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:20,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 381 [2021-11-20 23:17:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:20,961 INFO L225 Difference]: With dead ends: 7268 [2021-11-20 23:17:20,962 INFO L226 Difference]: Without dead ends: 4829 [2021-11-20 23:17:20,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:21,001 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 3680 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 8172 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:21,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 8172 Invalid, 716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 707 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 23:17:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4829 states. [2021-11-20 23:17:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4824. [2021-11-20 23:17:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 2270 states have (on average 1.2559471365638766) internal successors, (2851), 2342 states have internal predecessors, (2851), 2331 states have call successors, (2331), 221 states have call predecessors, (2331), 220 states have return successors, (2332), 2292 states have call predecessors, (2332), 2327 states have call successors, (2332) [2021-11-20 23:17:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 7514 transitions. [2021-11-20 23:17:21,739 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 7514 transitions. Word has length 381 [2021-11-20 23:17:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:21,743 INFO L470 AbstractCegarLoop]: Abstraction has 4824 states and 7514 transitions. [2021-11-20 23:17:21,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-20 23:17:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 7514 transitions. [2021-11-20 23:17:21,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-11-20 23:17:21,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:21,766 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:21,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:17:21,767 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:21,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1635874778, now seen corresponding path program 1 times [2021-11-20 23:17:21,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:21,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326034453] [2021-11-20 23:17:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:21,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5112 trivial. 0 not checked. [2021-11-20 23:17:22,418 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:22,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326034453] [2021-11-20 23:17:22,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326034453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:22,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:22,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:17:22,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271472813] [2021-11-20 23:17:22,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:22,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:17:22,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:17:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:22,424 INFO L87 Difference]: Start difference. First operand 4824 states and 7514 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-20 23:17:25,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:27,671 INFO L93 Difference]: Finished difference Result 14102 states and 22043 transitions. [2021-11-20 23:17:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:17:27,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 383 [2021-11-20 23:17:27,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:27,787 INFO L225 Difference]: With dead ends: 14102 [2021-11-20 23:17:27,788 INFO L226 Difference]: Without dead ends: 9351 [2021-11-20 23:17:27,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:17:27,844 INFO L933 BasicCegarLoop]: 4679 mSDtfsCounter, 3590 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 8183 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:27,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 8183 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 698 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-20 23:17:27,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9351 states. [2021-11-20 23:17:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9351 to 9323. [2021-11-20 23:17:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9323 states, 4361 states have (on average 1.2561339142398533) internal successors, (5478), 4500 states have internal predecessors, (5478), 4530 states have call successors, (4530), 432 states have call predecessors, (4530), 429 states have return successors, (4587), 4446 states have call predecessors, (4587), 4526 states have call successors, (4587) [2021-11-20 23:17:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9323 states to 9323 states and 14595 transitions. [2021-11-20 23:17:28,981 INFO L78 Accepts]: Start accepts. Automaton has 9323 states and 14595 transitions. Word has length 383 [2021-11-20 23:17:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:28,984 INFO L470 AbstractCegarLoop]: Abstraction has 9323 states and 14595 transitions. [2021-11-20 23:17:28,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2021-11-20 23:17:28,985 INFO L276 IsEmpty]: Start isEmpty. Operand 9323 states and 14595 transitions. [2021-11-20 23:17:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-20 23:17:29,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:29,009 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:29,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:17:29,010 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash -509427797, now seen corresponding path program 1 times [2021-11-20 23:17:29,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:29,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949775007] [2021-11-20 23:17:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:29,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5367 trivial. 0 not checked. [2021-11-20 23:17:29,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:29,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949775007] [2021-11-20 23:17:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949775007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:29,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:29,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:29,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234414219] [2021-11-20 23:17:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:29,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:29,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:29,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:29,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:29,600 INFO L87 Difference]: Start difference. First operand 9323 states and 14595 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-20 23:17:32,296 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:34,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:38,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:39,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:39,184 INFO L93 Difference]: Finished difference Result 9348 states and 14620 transitions. [2021-11-20 23:17:39,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:39,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 423 [2021-11-20 23:17:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:39,300 INFO L225 Difference]: With dead ends: 9348 [2021-11-20 23:17:39,301 INFO L226 Difference]: Without dead ends: 9346 [2021-11-20 23:17:39,310 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:17:39,315 INFO L933 BasicCegarLoop]: 3519 mSDtfsCounter, 3748 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3764 SdHoareTripleChecker+Valid, 10562 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:39,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3764 Valid, 10562 Invalid, 1065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2021-11-20 23:17:39,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9346 states. [2021-11-20 23:17:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9346 to 9344. [2021-11-20 23:17:40,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9344 states, 4373 states have (on average 1.25565973016236) internal successors, (5491), 4513 states have internal predecessors, (5491), 4532 states have call successors, (4532), 438 states have call predecessors, (4532), 436 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:17:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9344 states to 9344 states and 14617 transitions. [2021-11-20 23:17:40,216 INFO L78 Accepts]: Start accepts. Automaton has 9344 states and 14617 transitions. Word has length 423 [2021-11-20 23:17:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:40,218 INFO L470 AbstractCegarLoop]: Abstraction has 9344 states and 14617 transitions. [2021-11-20 23:17:40,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2021-11-20 23:17:40,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9344 states and 14617 transitions. [2021-11-20 23:17:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-20 23:17:40,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:40,240 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:40,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:17:40,240 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:40,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:40,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1199213954, now seen corresponding path program 1 times [2021-11-20 23:17:40,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:40,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990266378] [2021-11-20 23:17:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:40,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5376 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5374 trivial. 0 not checked. [2021-11-20 23:17:40,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990266378] [2021-11-20 23:17:40,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990266378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:40,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:40,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:40,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104766013] [2021-11-20 23:17:40,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:40,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:40,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:40,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:40,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:40,864 INFO L87 Difference]: Start difference. First operand 9344 states and 14617 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-20 23:17:42,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:17:47,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:48,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:48,546 INFO L93 Difference]: Finished difference Result 9352 states and 14623 transitions. [2021-11-20 23:17:48,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:48,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 431 [2021-11-20 23:17:48,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:48,619 INFO L225 Difference]: With dead ends: 9352 [2021-11-20 23:17:48,619 INFO L226 Difference]: Without dead ends: 9350 [2021-11-20 23:17:48,630 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:17:48,631 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:48,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-20 23:17:48,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2021-11-20 23:17:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 9348. [2021-11-20 23:17:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9348 states, 4376 states have (on average 1.2554844606946984) internal successors, (5494), 4516 states have internal predecessors, (5494), 4532 states have call successors, (4532), 439 states have call predecessors, (4532), 437 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:17:49,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9348 states to 9348 states and 14620 transitions. [2021-11-20 23:17:49,545 INFO L78 Accepts]: Start accepts. Automaton has 9348 states and 14620 transitions. Word has length 431 [2021-11-20 23:17:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:49,547 INFO L470 AbstractCegarLoop]: Abstraction has 9348 states and 14620 transitions. [2021-11-20 23:17:49,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-20 23:17:49,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9348 states and 14620 transitions. [2021-11-20 23:17:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-20 23:17:49,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:49,563 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:49,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:17:49,564 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1677726485, now seen corresponding path program 1 times [2021-11-20 23:17:49,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:49,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838488507] [2021-11-20 23:17:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:49,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5375 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5371 trivial. 0 not checked. [2021-11-20 23:17:50,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:50,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838488507] [2021-11-20 23:17:50,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838488507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:50,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:50,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:50,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218836374] [2021-11-20 23:17:50,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:50,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:50,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:50,026 INFO L87 Difference]: Start difference. First operand 9348 states and 14620 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-20 23:17:55,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:17:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:17:56,346 INFO L93 Difference]: Finished difference Result 9356 states and 14626 transitions. [2021-11-20 23:17:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:17:56,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 433 [2021-11-20 23:17:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:17:56,531 INFO L225 Difference]: With dead ends: 9356 [2021-11-20 23:17:56,531 INFO L226 Difference]: Without dead ends: 9354 [2021-11-20 23:17:56,537 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:17:56,538 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3743 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:17:56,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:17:56,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9354 states. [2021-11-20 23:17:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9354 to 9352. [2021-11-20 23:17:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9352 states, 4379 states have (on average 1.2553094313770268) internal successors, (5497), 4519 states have internal predecessors, (5497), 4532 states have call successors, (4532), 440 states have call predecessors, (4532), 438 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:17:57,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 14623 transitions. [2021-11-20 23:17:57,478 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 14623 transitions. Word has length 433 [2021-11-20 23:17:57,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:17:57,479 INFO L470 AbstractCegarLoop]: Abstraction has 9352 states and 14623 transitions. [2021-11-20 23:17:57,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-20 23:17:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 14623 transitions. [2021-11-20 23:17:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-11-20 23:17:57,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:17:57,498 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:17:57,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:17:57,498 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:17:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:17:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash 562459138, now seen corresponding path program 1 times [2021-11-20 23:17:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:17:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606984597] [2021-11-20 23:17:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:17:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:17:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:17:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 5392 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5386 trivial. 0 not checked. [2021-11-20 23:17:57,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:17:57,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606984597] [2021-11-20 23:17:57,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606984597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:17:57,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:17:57,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:17:57,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961528587] [2021-11-20 23:17:57,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:17:57,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:17:57,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:17:57,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:17:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:17:57,985 INFO L87 Difference]: Start difference. First operand 9352 states and 14623 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-20 23:18:01,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:05,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:05,912 INFO L93 Difference]: Finished difference Result 9360 states and 14629 transitions. [2021-11-20 23:18:05,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 441 [2021-11-20 23:18:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:05,986 INFO L225 Difference]: With dead ends: 9360 [2021-11-20 23:18:05,987 INFO L226 Difference]: Without dead ends: 9358 [2021-11-20 23:18:05,997 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:18:05,998 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:05,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3755 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 7.5s Time] [2021-11-20 23:18:06,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9358 states. [2021-11-20 23:18:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9358 to 9356. [2021-11-20 23:18:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 4382 states have (on average 1.2551346417161113) internal successors, (5500), 4522 states have internal predecessors, (5500), 4532 states have call successors, (4532), 441 states have call predecessors, (4532), 439 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:18:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 14626 transitions. [2021-11-20 23:18:06,933 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 14626 transitions. Word has length 441 [2021-11-20 23:18:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:06,935 INFO L470 AbstractCegarLoop]: Abstraction has 9356 states and 14626 transitions. [2021-11-20 23:18:06,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-20 23:18:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 14626 transitions. [2021-11-20 23:18:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-20 23:18:06,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:06,955 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:06,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:18:06,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:06,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:06,956 INFO L85 PathProgramCache]: Analyzing trace with hash -543089744, now seen corresponding path program 1 times [2021-11-20 23:18:06,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:06,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950317918] [2021-11-20 23:18:06,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:06,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5406 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5398 trivial. 0 not checked. [2021-11-20 23:18:07,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:07,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950317918] [2021-11-20 23:18:07,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950317918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:07,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:07,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:07,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659667] [2021-11-20 23:18:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:07,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:07,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:07,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:07,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:07,513 INFO L87 Difference]: Start difference. First operand 9356 states and 14626 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-20 23:18:10,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:14,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:15,255 INFO L93 Difference]: Finished difference Result 9364 states and 14632 transitions. [2021-11-20 23:18:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 446 [2021-11-20 23:18:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:15,313 INFO L225 Difference]: With dead ends: 9364 [2021-11-20 23:18:15,313 INFO L226 Difference]: Without dead ends: 9362 [2021-11-20 23:18:15,322 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:18:15,323 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3742 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3754 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:15,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3754 Valid, 10565 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1062 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2021-11-20 23:18:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9362 states. [2021-11-20 23:18:16,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9362 to 9360. [2021-11-20 23:18:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9360 states, 4385 states have (on average 1.2549600912200685) internal successors, (5503), 4525 states have internal predecessors, (5503), 4532 states have call successors, (4532), 442 states have call predecessors, (4532), 440 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:18:16,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9360 states to 9360 states and 14629 transitions. [2021-11-20 23:18:16,279 INFO L78 Accepts]: Start accepts. Automaton has 9360 states and 14629 transitions. Word has length 446 [2021-11-20 23:18:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:16,281 INFO L470 AbstractCegarLoop]: Abstraction has 9360 states and 14629 transitions. [2021-11-20 23:18:16,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-20 23:18:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 9360 states and 14629 transitions. [2021-11-20 23:18:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-20 23:18:16,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:16,298 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:16,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:18:16,299 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:16,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1842374274, now seen corresponding path program 1 times [2021-11-20 23:18:16,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:16,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718657376] [2021-11-20 23:18:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:16,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5424 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5414 trivial. 0 not checked. [2021-11-20 23:18:16,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:16,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718657376] [2021-11-20 23:18:16,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718657376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:16,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:16,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:16,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148314060] [2021-11-20 23:18:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:16,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:16,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:16,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:16,726 INFO L87 Difference]: Start difference. First operand 9360 states and 14629 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:18:18,901 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:22,213 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:22,855 INFO L93 Difference]: Finished difference Result 9400 states and 14667 transitions. [2021-11-20 23:18:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:22,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 451 [2021-11-20 23:18:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:22,906 INFO L225 Difference]: With dead ends: 9400 [2021-11-20 23:18:22,906 INFO L226 Difference]: Without dead ends: 9398 [2021-11-20 23:18:22,913 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:18:22,914 INFO L933 BasicCegarLoop]: 3522 mSDtfsCounter, 3729 mSDsluCounter, 7758 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 10578 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:22,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3744 Valid, 10578 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1068 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-20 23:18:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9398 states. [2021-11-20 23:18:23,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9398 to 9388. [2021-11-20 23:18:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9388 states, 4400 states have (on average 1.2540909090909091) internal successors, (5518), 4540 states have internal predecessors, (5518), 4532 states have call successors, (4532), 455 states have call predecessors, (4532), 453 states have return successors, (4594), 4448 states have call predecessors, (4594), 4528 states have call successors, (4594) [2021-11-20 23:18:23,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9388 states to 9388 states and 14644 transitions. [2021-11-20 23:18:24,000 INFO L78 Accepts]: Start accepts. Automaton has 9388 states and 14644 transitions. Word has length 451 [2021-11-20 23:18:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 9388 states and 14644 transitions. [2021-11-20 23:18:24,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:18:24,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9388 states and 14644 transitions. [2021-11-20 23:18:24,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2021-11-20 23:18:24,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:24,020 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:24,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:18:24,020 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:24,021 INFO L85 PathProgramCache]: Analyzing trace with hash 303441584, now seen corresponding path program 1 times [2021-11-20 23:18:24,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:24,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297094098] [2021-11-20 23:18:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:24,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5446 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5434 trivial. 0 not checked. [2021-11-20 23:18:24,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297094098] [2021-11-20 23:18:24,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297094098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:24,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:24,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:24,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39978060] [2021-11-20 23:18:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:24,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:24,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:24,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:24,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:24,419 INFO L87 Difference]: Start difference. First operand 9388 states and 14644 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:18:26,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:29,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:30,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:30,854 INFO L93 Difference]: Finished difference Result 9580 states and 14839 transitions. [2021-11-20 23:18:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:30,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 456 [2021-11-20 23:18:30,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:30,902 INFO L225 Difference]: With dead ends: 9580 [2021-11-20 23:18:30,903 INFO L226 Difference]: Without dead ends: 9578 [2021-11-20 23:18:30,908 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:18:30,909 INFO L933 BasicCegarLoop]: 3529 mSDtfsCounter, 3601 mSDsluCounter, 7965 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3610 SdHoareTripleChecker+Valid, 10756 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:30,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3610 Valid, 10756 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1104 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-11-20 23:18:30,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2021-11-20 23:18:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9566. [2021-11-20 23:18:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9566 states, 4497 states have (on average 1.2508338892595063) internal successors, (5625), 4637 states have internal predecessors, (5625), 4563 states have call successors, (4563), 505 states have call predecessors, (4563), 503 states have return successors, (4625), 4479 states have call predecessors, (4625), 4559 states have call successors, (4625) [2021-11-20 23:18:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9566 states to 9566 states and 14813 transitions. [2021-11-20 23:18:31,696 INFO L78 Accepts]: Start accepts. Automaton has 9566 states and 14813 transitions. Word has length 456 [2021-11-20 23:18:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:31,698 INFO L470 AbstractCegarLoop]: Abstraction has 9566 states and 14813 transitions. [2021-11-20 23:18:31,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-20 23:18:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9566 states and 14813 transitions. [2021-11-20 23:18:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-20 23:18:31,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:31,718 INFO L514 BasicCegarLoop]: trace histogram [40, 36, 36, 36, 36, 36, 36, 8, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:31,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:18:31,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -925620441, now seen corresponding path program 1 times [2021-11-20 23:18:31,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:31,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630148782] [2021-11-20 23:18:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:31,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5465 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5451 trivial. 0 not checked. [2021-11-20 23:18:32,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:32,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630148782] [2021-11-20 23:18:32,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630148782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:32,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:32,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:18:32,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436049560] [2021-11-20 23:18:32,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:32,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:18:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:18:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:18:32,114 INFO L87 Difference]: Start difference. First operand 9566 states and 14813 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:18:33,285 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:35,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:38,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:38,948 INFO L93 Difference]: Finished difference Result 9574 states and 14819 transitions. [2021-11-20 23:18:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:18:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 458 [2021-11-20 23:18:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:38,984 INFO L225 Difference]: With dead ends: 9574 [2021-11-20 23:18:38,984 INFO L226 Difference]: Without dead ends: 9572 [2021-11-20 23:18:38,991 INFO L932 BasicCegarLoop]: 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 [2021-11-20 23:18:38,991 INFO L933 BasicCegarLoop]: 3523 mSDtfsCounter, 3742 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 10568 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:38,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3751 Valid, 10568 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1063 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-20 23:18:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9572 states. [2021-11-20 23:18:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9572 to 9570. [2021-11-20 23:18:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 4500 states have (on average 1.2506666666666666) internal successors, (5628), 4640 states have internal predecessors, (5628), 4563 states have call successors, (4563), 506 states have call predecessors, (4563), 504 states have return successors, (4625), 4479 states have call predecessors, (4625), 4559 states have call successors, (4625) [2021-11-20 23:18:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 14816 transitions. [2021-11-20 23:18:39,670 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 14816 transitions. Word has length 458 [2021-11-20 23:18:39,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:39,671 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 14816 transitions. [2021-11-20 23:18:39,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-20 23:18:39,672 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 14816 transitions. [2021-11-20 23:18:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-20 23:18:39,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:39,692 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:39,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:18:39,692 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:39,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1637088479, now seen corresponding path program 1 times [2021-11-20 23:18:39,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:39,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54351097] [2021-11-20 23:18:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:39,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:40,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-20 23:18:40,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:40,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54351097] [2021-11-20 23:18:40,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54351097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:40,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:40,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:18:40,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749829699] [2021-11-20 23:18:40,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:40,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:18:40,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:40,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:18:40,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:18:40,126 INFO L87 Difference]: Start difference. First operand 9570 states and 14816 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:18:43,457 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:45,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:47,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:47,022 INFO L93 Difference]: Finished difference Result 28281 states and 43897 transitions. [2021-11-20 23:18:47,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:18:47,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 463 [2021-11-20 23:18:47,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:47,142 INFO L225 Difference]: With dead ends: 28281 [2021-11-20 23:18:47,142 INFO L226 Difference]: Without dead ends: 18784 [2021-11-20 23:18:47,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:18:47,234 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 3618 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3622 SdHoareTripleChecker+Valid, 8142 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:47,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3622 Valid, 8142 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-20 23:18:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18784 states. [2021-11-20 23:18:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18784 to 18708. [2021-11-20 23:18:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18708 states, 8764 states have (on average 1.245778183477864) internal successors, (10918), 9040 states have internal predecessors, (10918), 8953 states have call successors, (8953), 992 states have call predecessors, (8953), 988 states have return successors, (9191), 8787 states have call predecessors, (9191), 8949 states have call successors, (9191) [2021-11-20 23:18:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18708 states to 18708 states and 29062 transitions. [2021-11-20 23:18:48,819 INFO L78 Accepts]: Start accepts. Automaton has 18708 states and 29062 transitions. Word has length 463 [2021-11-20 23:18:48,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:48,820 INFO L470 AbstractCegarLoop]: Abstraction has 18708 states and 29062 transitions. [2021-11-20 23:18:48,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:18:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18708 states and 29062 transitions. [2021-11-20 23:18:48,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2021-11-20 23:18:48,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:48,838 INFO L514 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:48,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:18:48,838 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:48,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:48,839 INFO L85 PathProgramCache]: Analyzing trace with hash 278718020, now seen corresponding path program 1 times [2021-11-20 23:18:48,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:48,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844711423] [2021-11-20 23:18:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:48,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:18:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:18:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5430 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2021-11-20 23:18:49,225 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:18:49,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844711423] [2021-11-20 23:18:49,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844711423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:18:49,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:18:49,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:18:49,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126346334] [2021-11-20 23:18:49,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:18:49,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:18:49,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:18:49,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:18:49,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:18:49,228 INFO L87 Difference]: Start difference. First operand 18708 states and 29062 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-20 23:18:51,108 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:53,383 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:18:55,987 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:18:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:18:57,586 INFO L93 Difference]: Finished difference Result 40717 states and 63223 transitions. [2021-11-20 23:18:57,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:18:57,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 485 [2021-11-20 23:18:57,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:18:57,957 INFO L225 Difference]: With dead ends: 40717 [2021-11-20 23:18:57,957 INFO L226 Difference]: Without dead ends: 22082 [2021-11-20 23:18:58,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:18:58,074 INFO L933 BasicCegarLoop]: 5217 mSDtfsCounter, 3371 mSDsluCounter, 3806 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 8694 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:18:58,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3376 Valid, 8694 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 793 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-20 23:18:58,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22082 states. [2021-11-20 23:18:59,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22082 to 22014. [2021-11-20 23:18:59,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22014 states, 10142 states have (on average 1.2351607178071387) internal successors, (12527), 10493 states have internal predecessors, (12527), 10670 states have call successors, (10670), 1208 states have call predecessors, (10670), 1199 states have return successors, (10915), 10446 states have call predecessors, (10915), 10666 states have call successors, (10915) [2021-11-20 23:18:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22014 states to 22014 states and 34112 transitions. [2021-11-20 23:18:59,896 INFO L78 Accepts]: Start accepts. Automaton has 22014 states and 34112 transitions. Word has length 485 [2021-11-20 23:18:59,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:18:59,897 INFO L470 AbstractCegarLoop]: Abstraction has 22014 states and 34112 transitions. [2021-11-20 23:18:59,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-20 23:18:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 22014 states and 34112 transitions. [2021-11-20 23:18:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-20 23:18:59,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:18:59,916 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:18:59,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:18:59,917 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:18:59,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:18:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1180869103, now seen corresponding path program 1 times [2021-11-20 23:18:59,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:18:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140486738] [2021-11-20 23:18:59,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:18:59,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-20 23:19:00,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:00,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140486738] [2021-11-20 23:19:00,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140486738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:00,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:00,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:00,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431594709] [2021-11-20 23:19:00,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:00,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:00,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:00,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:00,406 INFO L87 Difference]: Start difference. First operand 22014 states and 34112 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:19:04,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:07,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:07,858 INFO L93 Difference]: Finished difference Result 61165 states and 94926 transitions. [2021-11-20 23:19:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 461 [2021-11-20 23:19:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:08,054 INFO L225 Difference]: With dead ends: 61165 [2021-11-20 23:19:08,054 INFO L226 Difference]: Without dead ends: 39224 [2021-11-20 23:19:08,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:08,168 INFO L933 BasicCegarLoop]: 4672 mSDtfsCounter, 3620 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3624 SdHoareTripleChecker+Valid, 8138 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:08,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3624 Valid, 8138 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 756 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 23:19:08,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-20 23:19:11,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39138. [2021-11-20 23:19:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39138 states, 17978 states have (on average 1.2288908666147513) internal successors, (22093), 18615 states have internal predecessors, (22093), 18994 states have call successors, (18994), 2180 states have call predecessors, (18994), 2163 states have return successors, (19620), 18584 states have call predecessors, (19620), 18990 states have call successors, (19620) [2021-11-20 23:19:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39138 states to 39138 states and 60707 transitions. [2021-11-20 23:19:11,702 INFO L78 Accepts]: Start accepts. Automaton has 39138 states and 60707 transitions. Word has length 461 [2021-11-20 23:19:11,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:11,703 INFO L470 AbstractCegarLoop]: Abstraction has 39138 states and 60707 transitions. [2021-11-20 23:19:11,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:19:11,703 INFO L276 IsEmpty]: Start isEmpty. Operand 39138 states and 60707 transitions. [2021-11-20 23:19:11,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2021-11-20 23:19:11,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:11,714 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:11,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 23:19:11,715 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:19:11,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash -165970737, now seen corresponding path program 1 times [2021-11-20 23:19:11,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642758528] [2021-11-20 23:19:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:11,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-20 23:19:12,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:12,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642758528] [2021-11-20 23:19:12,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642758528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:12,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:12,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:12,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251850354] [2021-11-20 23:19:12,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:12,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:12,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:12,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:12,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:12,113 INFO L87 Difference]: Start difference. First operand 39138 states and 60707 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:19:15,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:18,185 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:22,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:22,926 INFO L93 Difference]: Finished difference Result 112143 states and 174217 transitions. [2021-11-20 23:19:22,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:22,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 464 [2021-11-20 23:19:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:23,539 INFO L225 Difference]: With dead ends: 112143 [2021-11-20 23:19:23,539 INFO L226 Difference]: Without dead ends: 73078 [2021-11-20 23:19:23,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:23,718 INFO L933 BasicCegarLoop]: 4672 mSDtfsCounter, 3617 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 8138 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:23,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3621 Valid, 8138 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 755 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-20 23:19:23,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73078 states. [2021-11-20 23:19:30,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73078 to 72944. [2021-11-20 23:19:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72944 states, 33386 states have (on average 1.2223986101958906) internal successors, (40811), 34595 states have internal predecessors, (40811), 35474 states have call successors, (35474), 4114 states have call predecessors, (35474), 4081 states have return successors, (36966), 34692 states have call predecessors, (36966), 35470 states have call successors, (36966) [2021-11-20 23:19:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72944 states to 72944 states and 113251 transitions. [2021-11-20 23:19:31,012 INFO L78 Accepts]: Start accepts. Automaton has 72944 states and 113251 transitions. Word has length 464 [2021-11-20 23:19:31,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:31,012 INFO L470 AbstractCegarLoop]: Abstraction has 72944 states and 113251 transitions. [2021-11-20 23:19:31,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:19:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 72944 states and 113251 transitions. [2021-11-20 23:19:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2021-11-20 23:19:31,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:31,020 INFO L514 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:19:31,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 23:19:31,021 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:19:31,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:31,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1773337917, now seen corresponding path program 1 times [2021-11-20 23:19:31,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:31,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654677270] [2021-11-20 23:19:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:31,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5138 trivial. 0 not checked. [2021-11-20 23:19:31,330 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:31,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654677270] [2021-11-20 23:19:31,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654677270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:31,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:31,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:31,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026960675] [2021-11-20 23:19:31,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:31,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:31,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:31,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:31,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:31,333 INFO L87 Difference]: Start difference. First operand 72944 states and 113251 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2021-11-20 23:19:33,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:36,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:38,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:48,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:48,028 INFO L93 Difference]: Finished difference Result 205982 states and 320230 transitions. [2021-11-20 23:19:48,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:48,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 462 [2021-11-20 23:19:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:48,981 INFO L225 Difference]: With dead ends: 205982 [2021-11-20 23:19:48,981 INFO L226 Difference]: Without dead ends: 133111 [2021-11-20 23:19:49,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:49,612 INFO L933 BasicCegarLoop]: 4688 mSDtfsCounter, 3619 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 8154 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:49,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3623 Valid, 8154 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 757 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 23:19:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133111 states.