./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/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 c0c438f99a824e3d15e4313dc5ea51e50cfc55cdb2cc6e49c87ebde175ff530e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:16:26,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:16:26,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:16:26,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:16:26,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:16:26,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:16:26,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:16:26,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:16:26,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:16:26,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:16:26,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:16:26,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:16:26,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:16:26,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:16:26,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:16:26,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:16:26,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:16:26,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:16:26,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:16:26,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:16:26,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:16:26,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:16:26,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:16:26,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:16:26,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:16:26,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:16:26,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:16:26,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:16:26,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:16:26,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:16:26,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:16:26,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:16:26,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:16:26,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:16:26,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:16:26,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:16:26,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:16:26,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:16:26,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:16:26,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:16:26,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:16:26,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:16:26,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:16:26,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:16:26,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:16:26,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:16:26,182 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:16:26,182 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:16:26,183 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:16:26,183 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:16:26,183 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:16:26,183 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:16:26,185 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:16:26,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:16:26,185 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:16:26,185 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:16:26,186 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:16:26,186 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:16:26,186 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:16:26,186 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:16:26,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:16:26,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:16:26,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:16:26,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:16:26,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:16:26,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:16:26,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:16:26,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:16:26,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:16:26,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:16:26,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:16:26,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:26,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:16:26,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:16:26,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:16:26,193 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:16:26,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:16:26,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:16:26,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:16:26,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:16:26,194 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0c438f99a824e3d15e4313dc5ea51e50cfc55cdb2cc6e49c87ebde175ff530e [2021-11-20 23:16:26,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:16:26,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:16:26,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:16:26,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:16:26,471 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:16:26,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-20 23:16:26,536 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/data/15ab627c9/99d3dc391eb04ad2bd7352dd8c06817b/FLAG412810c0e [2021-11-20 23:16:27,712 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:16:27,712 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-20 23:16:27,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/data/15ab627c9/99d3dc391eb04ad2bd7352dd8c06817b/FLAG412810c0e [2021-11-20 23:16:27,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/data/15ab627c9/99d3dc391eb04ad2bd7352dd8c06817b [2021-11-20 23:16:27,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:16:27,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:16:27,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:27,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:16:27,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:16:27,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b8f384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:27, skipping insertion in model container [2021-11-20 23:16:27,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:27" (1/1) ... [2021-11-20 23:16:27,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:16:28,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:16:36,531 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789335,789348] [2021-11-20 23:16:36,534 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789504,789517] [2021-11-20 23:16:36,534 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789671,789684] [2021-11-20 23:16:36,535 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789839,789852] [2021-11-20 23:16:36,573 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:36,641 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:16:37,501 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789335,789348] [2021-11-20 23:16:37,502 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789504,789517] [2021-11-20 23:16:37,502 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789671,789684] [2021-11-20 23:16:37,503 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_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[789839,789852] [2021-11-20 23:16:37,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:16:37,931 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:16:37,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37 WrapperNode [2021-11-20 23:16:37,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:16:37,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:37,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:16:37,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:16:37,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:38,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:38,699 INFO L137 Inliner]: procedures = 738, calls = 11729, calls flagged for inlining = 334, calls inlined = 253, statements flattened = 13056 [2021-11-20 23:16:38,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:16:38,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:16:38,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:16:38,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:16:38,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:38,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:38,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:38,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:39,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:39,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:39,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:39,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:16:39,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:16:39,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:16:39,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:16:39,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (1/1) ... [2021-11-20 23:16:39,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:16:39,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:16:39,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:16:39,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6d7a78e-d76f-4e42-aad4-8d114c7ef2b2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:16:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-20 23:16:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-20 23:16:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:16:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:16:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-20 23:16:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-20 23:16:39,692 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-20 23:16:39,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-20 23:16:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-20 23:16:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-20 23:16:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:16:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:16:39,693 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:16:39,693 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:16:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-20 23:16:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-20 23:16:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-20 23:16:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-20 23:16:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-20 23:16:39,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-20 23:16:39,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:16:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:16:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-20 23:16:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-20 23:16:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-20 23:16:39,695 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-20 23:16:39,695 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-20 23:16:39,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-20 23:16:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-20 23:16:39,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-20 23:16:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-20 23:16:39,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-20 23:16:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-20 23:16:39,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-20 23:16:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-20 23:16:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-20 23:16:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:16:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:16:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:16:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:16:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:16:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:16:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-20 23:16:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-20 23:16:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:16:39,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:16:39,698 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-20 23:16:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-20 23:16:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-20 23:16:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-20 23:16:39,699 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-20 23:16:39,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-20 23:16:39,700 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-20 23:16:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-20 23:16:39,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:16:39,701 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-20 23:16:39,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-20 23:16:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-20 23:16:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-20 23:16:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-20 23:16:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-20 23:16:39,702 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-20 23:16:39,702 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-20 23:16:39,703 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-20 23:16:39,703 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-20 23:16:39,703 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-20 23:16:39,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-20 23:16:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:16:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:16:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-20 23:16:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-20 23:16:39,706 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-20 23:16:39,706 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-20 23:16:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:16:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-20 23:16:39,707 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-20 23:16:39,707 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-20 23:16:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-20 23:16:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:16:39,724 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-20 23:16:39,724 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-20 23:16:39,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:16:39,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:16:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-20 23:16:39,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-20 23:16:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:16:39,726 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-20 23:16:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-20 23:16:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-20 23:16:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-20 23:16:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-20 23:16:39,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-20 23:16:39,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:16:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:16:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-20 23:16:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-20 23:16:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:16:39,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:16:39,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-20 23:16:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-20 23:16:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-20 23:16:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_ipw2100_exit_18_2 [2021-11-20 23:16:39,729 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-20 23:16:39,729 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-20 23:16:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-20 23:16:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-20 23:16:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-20 23:16:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-20 23:16:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-20 23:16:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-20 23:16:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-20 23:16:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-20 23:16:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-20 23:16:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-20 23:16:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-20 23:16:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-20 23:16:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:16:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:16:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:16:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:16:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:16:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:16:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:16:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:16:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-20 23:16:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-20 23:16:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:16:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:16:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-20 23:16:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-20 23:16:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:16:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:16:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:16:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-20 23:16:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-20 23:16:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-20 23:16:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-20 23:16:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-20 23:16:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:16:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:16:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-20 23:16:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-20 23:16:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:16:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-20 23:16:39,745 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-20 23:16:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-20 23:16:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:16:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:16:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-20 23:16:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-20 23:16:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:16:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:16:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-20 23:16:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-20 23:16:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-20 23:16:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-20 23:16:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-20 23:16:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-20 23:16:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-20 23:16:39,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-20 23:16:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-20 23:16:39,748 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-20 23:16:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:16:39,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:16:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-20 23:16:39,748 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-20 23:16:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-20 23:16:39,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-20 23:16:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-20 23:16:39,749 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-20 23:16:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-20 23:16:39,750 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-20 23:16:39,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:16:39,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:16:39,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:16:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:16:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-20 23:16:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-20 23:16:39,751 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-20 23:16:39,751 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-20 23:16:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-20 23:16:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-20 23:16:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-20 23:16:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-20 23:16:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:16:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:16:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-20 23:16:39,758 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-20 23:16:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-20 23:16:39,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-20 23:16:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-20 23:16:39,758 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-20 23:16:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-20 23:16:39,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-20 23:16:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-20 23:16:39,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-20 23:16:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-20 23:16:39,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-20 23:16:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-20 23:16:39,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-20 23:16:39,759 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-20 23:16:39,760 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-20 23:16:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-20 23:16:39,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-20 23:16:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-20 23:16:39,760 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-20 23:16:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-20 23:16:39,760 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-20 23:16:39,760 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-20 23:16:39,761 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-20 23:16:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-20 23:16:39,761 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-20 23:16:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:16:39,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:16:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:16:39,761 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:16:39,761 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-20 23:16:39,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-20 23:16:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-20 23:16:39,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-20 23:16:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-20 23:16:39,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-20 23:16:39,762 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-20 23:16:39,762 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-20 23:16:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-20 23:16:39,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-20 23:16:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:16:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-20 23:16:39,763 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-20 23:16:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-20 23:16:39,763 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-20 23:16:39,763 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-20 23:16:39,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-20 23:16:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:16:39,783 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-20 23:16:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-20 23:16:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-20 23:16:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-20 23:16:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-20 23:16:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-20 23:16:39,784 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-20 23:16:39,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-20 23:16:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-20 23:16:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-20 23:16:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-20 23:16:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-20 23:16:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:16:39,786 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-20 23:16:39,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-20 23:16:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-20 23:16:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-20 23:16:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-20 23:16:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-20 23:16:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-20 23:16:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-20 23:16:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-20 23:16:39,787 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-20 23:16:39,787 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:16:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:16:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-20 23:16:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-20 23:16:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:16:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:16:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-20 23:16:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-20 23:16:39,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:16:39,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:16:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-20 23:16:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-20 23:16:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-20 23:16:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-20 23:16:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-20 23:16:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-20 23:16:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-20 23:16:39,789 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-20 23:16:39,789 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-20 23:16:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-20 23:16:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-20 23:16:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-20 23:16:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-20 23:16:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-20 23:16:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:16:39,790 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:16:39,790 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-20 23:16:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-20 23:16:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-20 23:16:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-20 23:16:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-20 23:16:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-20 23:16:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-20 23:16:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-20 23:16:39,791 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-20 23:16:39,791 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-20 23:16:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:16:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-20 23:16:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-20 23:16:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:16:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:16:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-20 23:16:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-20 23:16:39,792 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-20 23:16:39,792 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-20 23:16:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-20 23:16:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-20 23:16:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-20 23:16:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-20 23:16:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:16:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:16:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-20 23:16:39,793 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-20 23:16:39,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_91 [2021-11-20 23:16:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_91 [2021-11-20 23:16:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-20 23:16:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-20 23:16:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-20 23:16:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-20 23:16:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-20 23:16:39,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-20 23:16:39,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:16:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:16:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-20 23:16:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-20 23:16:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-20 23:16:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-20 23:16:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-20 23:16:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-20 23:16:39,795 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-20 23:16:39,795 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-20 23:16:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-20 23:16:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-20 23:16:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:16:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:16:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-20 23:16:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-20 23:16:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-20 23:16:39,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-20 23:16:39,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-20 23:16:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-20 23:16:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-20 23:16:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-20 23:16:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-20 23:16:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:16:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-20 23:16:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-20 23:16:39,797 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-20 23:16:39,797 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-20 23:16:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:16:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:16:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-20 23:16:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-20 23:16:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-20 23:16:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-20 23:16:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-20 23:16:39,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-20 23:16:39,798 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-20 23:16:39,799 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-20 23:16:41,149 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:16:41,154 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:16:53,432 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:19:14,119 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:19:14,263 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:19:19,189 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:19:19,189 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 23:19:19,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:19 BoogieIcfgContainer [2021-11-20 23:19:19,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:19:19,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:19:19,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:19:19,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:19:19,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:27" (1/3) ... [2021-11-20 23:19:19,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a32ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:19, skipping insertion in model container [2021-11-20 23:19:19,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:37" (2/3) ... [2021-11-20 23:19:19,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a32ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:19:19, skipping insertion in model container [2021-11-20 23:19:19,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:19:19" (3/3) ... [2021-11-20 23:19:19,210 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-20 23:19:19,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:19:19,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:19:19,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:19:19,309 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 23:19:19,310 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:19:19,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 2834 states, 1768 states have (on average 1.339366515837104) internal successors, (2368), 1785 states have internal predecessors, (2368), 895 states have call successors, (895), 169 states have call predecessors, (895), 168 states have return successors, (889), 887 states have call predecessors, (889), 889 states have call successors, (889) [2021-11-20 23:19:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-20 23:19:19,433 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:19,434 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:19,439 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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 23:19:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2087282038, now seen corresponding path program 1 times [2021-11-20 23:19:19,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:19,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574653450] [2021-11-20 23:19:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:19,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-20 23:19:21,281 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:21,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574653450] [2021-11-20 23:19:21,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574653450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:21,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:21,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:21,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140538856] [2021-11-20 23:19:21,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:21,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:21,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:21,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:21,372 INFO L87 Difference]: Start difference. First operand has 2834 states, 1768 states have (on average 1.339366515837104) internal successors, (2368), 1785 states have internal predecessors, (2368), 895 states have call successors, (895), 169 states have call predecessors, (895), 168 states have return successors, (889), 887 states have call predecessors, (889), 889 states have call successors, (889) Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:19:25,278 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 23:19:26,904 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:19:29,645 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:33,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:39,878 WARN L515 Checker$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 23:19:43,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:46,431 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:48,868 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:51,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:53,532 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:19:55,789 WARN L515 Checker$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 23:19:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:19:56,168 INFO L93 Difference]: Finished difference Result 7946 states and 11846 transitions. [2021-11-20 23:19:56,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:19:56,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 180 [2021-11-20 23:19:56,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:19:56,254 INFO L225 Difference]: With dead ends: 7946 [2021-11-20 23:19:56,254 INFO L226 Difference]: Without dead ends: 5130 [2021-11-20 23:19:56,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:56,305 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 3391 mSDsluCounter, 4092 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 7 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 7975 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:19:56,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 7975 Invalid, 1020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1003 Invalid, 10 Unknown, 0 Unchecked, 34.2s Time] [2021-11-20 23:19:56,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5130 states. [2021-11-20 23:19:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5130 to 5099. [2021-11-20 23:19:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 3187 states have (on average 1.3347976153122059) internal successors, (4254), 3226 states have internal predecessors, (4254), 1597 states have call successors, (1597), 316 states have call predecessors, (1597), 312 states have return successors, (1596), 1580 states have call predecessors, (1596), 1593 states have call successors, (1596) [2021-11-20 23:19:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 7447 transitions. [2021-11-20 23:19:56,866 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 7447 transitions. Word has length 180 [2021-11-20 23:19:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:19:56,871 INFO L470 AbstractCegarLoop]: Abstraction has 5099 states and 7447 transitions. [2021-11-20 23:19:56,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-20 23:19:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 7447 transitions. [2021-11-20 23:19:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-20 23:19:56,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:19:56,889 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2021-11-20 23:19:56,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:19:56,889 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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 23:19:56,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:19:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1376909214, now seen corresponding path program 1 times [2021-11-20 23:19:56,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:19:56,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618366945] [2021-11-20 23:19:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:19:56,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:19:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:19:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 995 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 995 trivial. 0 not checked. [2021-11-20 23:19:57,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:19:57,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618366945] [2021-11-20 23:19:57,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618366945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:19:57,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:19:57,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:19:57,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474200114] [2021-11-20 23:19:57,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:19:57,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:19:57,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:19:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:19:57,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:19:57,721 INFO L87 Difference]: Start difference. First operand 5099 states and 7447 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:20:02,177 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:04,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:20:07,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:09,360 WARN L515 Checker$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 23:20:11,842 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:13,942 WARN L515 Checker$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 23:20:19,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:23,116 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:25,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:28,304 WARN L515 Checker$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 23:20:30,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:33,083 WARN L515 Checker$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 23:20:35,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:35,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:20:35,865 INFO L93 Difference]: Finished difference Result 14637 states and 21352 transitions. [2021-11-20 23:20:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:20:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 184 [2021-11-20 23:20:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:20:35,967 INFO L225 Difference]: With dead ends: 14637 [2021-11-20 23:20:35,968 INFO L226 Difference]: Without dead ends: 9571 [2021-11-20 23:20:35,999 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 23:20:36,000 INFO L933 BasicCegarLoop]: 4405 mSDtfsCounter, 3293 mSDsluCounter, 4053 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 13 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3299 SdHoareTripleChecker+Valid, 7978 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:20:36,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3299 Valid, 7978 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1046 Invalid, 12 Unknown, 0 Unchecked, 37.4s Time] [2021-11-20 23:20:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9571 states. [2021-11-20 23:20:36,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9571 to 9560. [2021-11-20 23:20:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9560 states, 5984 states have (on average 1.3322192513368984) internal successors, (7972), 6058 states have internal predecessors, (7972), 2970 states have call successors, (2970), 611 states have call predecessors, (2970), 603 states have return successors, (2977), 2938 states have call predecessors, (2977), 2966 states have call successors, (2977) [2021-11-20 23:20:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9560 states to 9560 states and 13919 transitions. [2021-11-20 23:20:36,566 INFO L78 Accepts]: Start accepts. Automaton has 9560 states and 13919 transitions. Word has length 184 [2021-11-20 23:20:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:20:36,568 INFO L470 AbstractCegarLoop]: Abstraction has 9560 states and 13919 transitions. [2021-11-20 23:20:36,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-20 23:20:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 9560 states and 13919 transitions. [2021-11-20 23:20:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 23:20:36,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:20:36,576 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:20:36,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:20:36,576 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:20:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:20:36,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1174290470, now seen corresponding path program 1 times [2021-11-20 23:20:36,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:20:36,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755504656] [2021-11-20 23:20:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:20:36,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:20:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:20:37,528 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 992 trivial. 0 not checked. [2021-11-20 23:20:37,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:20:37,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755504656] [2021-11-20 23:20:37,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755504656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:20:37,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:20:37,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:20:37,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648313926] [2021-11-20 23:20:37,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:20:37,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:20:37,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:20:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:20:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:20:37,531 INFO L87 Difference]: Start difference. First operand 9560 states and 13919 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-20 23:20:41,941 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 23:20:44,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:20:48,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:52,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:54,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:20:58,078 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:01,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:04,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:06,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:08,971 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:11,331 WARN L515 Checker$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 23:21:13,590 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 23:21:14,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:14,123 INFO L93 Difference]: Finished difference Result 19310 states and 28130 transitions. [2021-11-20 23:21:14,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:21:14,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 195 [2021-11-20 23:21:14,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:14,215 INFO L225 Difference]: With dead ends: 19310 [2021-11-20 23:21:14,215 INFO L226 Difference]: Without dead ends: 9783 [2021-11-20 23:21:14,275 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 23:21:14,276 INFO L933 BasicCegarLoop]: 4696 mSDtfsCounter, 2354 mSDsluCounter, 4064 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 16 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 8278 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:14,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2356 Valid, 8278 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1132 Invalid, 11 Unknown, 0 Unchecked, 36.2s Time] [2021-11-20 23:21:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9783 states. [2021-11-20 23:21:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9783 to 9753. [2021-11-20 23:21:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9753 states, 6203 states have (on average 1.3379010156375948) internal successors, (8299), 6258 states have internal predecessors, (8299), 2936 states have call successors, (2936), 620 states have call predecessors, (2936), 611 states have return successors, (2939), 2907 states have call predecessors, (2939), 2932 states have call successors, (2939) [2021-11-20 23:21:14,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9753 states to 9753 states and 14174 transitions. [2021-11-20 23:21:14,828 INFO L78 Accepts]: Start accepts. Automaton has 9753 states and 14174 transitions. Word has length 195 [2021-11-20 23:21:14,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:14,830 INFO L470 AbstractCegarLoop]: Abstraction has 9753 states and 14174 transitions. [2021-11-20 23:21:14,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-20 23:21:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 9753 states and 14174 transitions. [2021-11-20 23:21:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-20 23:21:14,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:14,841 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 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] [2021-11-20 23:21:14,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:21:14,841 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:21:14,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:14,842 INFO L85 PathProgramCache]: Analyzing trace with hash -637212680, now seen corresponding path program 1 times [2021-11-20 23:21:14,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:14,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585005333] [2021-11-20 23:21:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:14,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2021-11-20 23:21:15,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:15,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585005333] [2021-11-20 23:21:15,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585005333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:15,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:15,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:21:15,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030810730] [2021-11-20 23:21:15,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:15,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:21:15,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:21:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:21:15,533 INFO L87 Difference]: Start difference. First operand 9753 states and 14174 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:21:18,756 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 23:21:22,596 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:24,322 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:21:26,400 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:29,371 WARN L515 Checker$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 23:21:31,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:34,819 WARN L515 Checker$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 23:21:38,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:41,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:44,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:46,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:48,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:51,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:21:53,462 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 23:21:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:21:53,944 INFO L93 Difference]: Finished difference Result 23908 states and 34692 transitions. [2021-11-20 23:21:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:21:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 224 [2021-11-20 23:21:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:21:54,036 INFO L225 Difference]: With dead ends: 23908 [2021-11-20 23:21:54,036 INFO L226 Difference]: Without dead ends: 14188 [2021-11-20 23:21:54,082 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 23:21:54,084 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 3285 mSDsluCounter, 4033 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 7 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3290 SdHoareTripleChecker+Valid, 7956 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:21:54,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3290 Valid, 7956 Invalid, 1055 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 1036 Invalid, 12 Unknown, 0 Unchecked, 37.9s Time] [2021-11-20 23:21:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14188 states. [2021-11-20 23:21:54,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14188 to 14147. [2021-11-20 23:21:54,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14147 states, 8973 states have (on average 1.3358965786247632) internal successors, (11987), 9078 states have internal predecessors, (11987), 4248 states have call successors, (4248), 939 states have call predecessors, (4248), 923 states have return successors, (4255), 4182 states have call predecessors, (4255), 4244 states have call successors, (4255) [2021-11-20 23:21:54,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14147 states to 14147 states and 20490 transitions. [2021-11-20 23:21:54,828 INFO L78 Accepts]: Start accepts. Automaton has 14147 states and 20490 transitions. Word has length 224 [2021-11-20 23:21:54,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:21:54,829 INFO L470 AbstractCegarLoop]: Abstraction has 14147 states and 20490 transitions. [2021-11-20 23:21:54,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:21:54,830 INFO L276 IsEmpty]: Start isEmpty. Operand 14147 states and 20490 transitions. [2021-11-20 23:21:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-20 23:21:54,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:21:54,837 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 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] [2021-11-20 23:21:54,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:21:54,838 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 23:21:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:21:54,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1014015407, now seen corresponding path program 1 times [2021-11-20 23:21:54,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:21:54,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330550428] [2021-11-20 23:21:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:21:54,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:21:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:21:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-20 23:21:55,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:21:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330550428] [2021-11-20 23:21:55,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330550428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:21:55,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:21:55,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:21:55,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581414733] [2021-11-20 23:21:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:21:55,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:21:55,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:21:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:21:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:21:55,951 INFO L87 Difference]: Start difference. First operand 14147 states and 20490 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-20 23:21:59,879 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 23:22:05,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:07,545 WARN L515 Checker$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 23:22:14,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:16,058 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:22:17,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:22:21,763 WARN L515 Checker$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 23:22:27,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:33,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:36,195 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:38,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:40,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:43,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:22:45,902 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 23:22:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:22:46,754 INFO L93 Difference]: Finished difference Result 27448 states and 39753 transitions. [2021-11-20 23:22:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:22:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2021-11-20 23:22:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:22:46,914 INFO L225 Difference]: With dead ends: 27448 [2021-11-20 23:22:46,914 INFO L226 Difference]: Without dead ends: 27446 [2021-11-20 23:22:46,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:22:46,933 INFO L933 BasicCegarLoop]: 4592 mSDtfsCounter, 3485 mSDsluCounter, 14347 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3502 SdHoareTripleChecker+Valid, 17331 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:22:46,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3502 Valid, 17331 Invalid, 2198 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2185 Invalid, 11 Unknown, 0 Unchecked, 50.0s Time] [2021-11-20 23:22:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27446 states. [2021-11-20 23:22:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27446 to 27439. [2021-11-20 23:22:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27439 states, 17371 states have (on average 1.3354441310229692) internal successors, (23198), 17579 states have internal predecessors, (23198), 8266 states have call successors, (8266), 1831 states have call predecessors, (8266), 1799 states have return successors, (8283), 8133 states have call predecessors, (8283), 8258 states have call successors, (8283) [2021-11-20 23:22:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27439 states to 27439 states and 39747 transitions. [2021-11-20 23:22:48,569 INFO L78 Accepts]: Start accepts. Automaton has 27439 states and 39747 transitions. Word has length 232 [2021-11-20 23:22:48,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:22:48,570 INFO L470 AbstractCegarLoop]: Abstraction has 27439 states and 39747 transitions. [2021-11-20 23:22:48,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-20 23:22:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27439 states and 39747 transitions. [2021-11-20 23:22:48,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-20 23:22:48,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:22:48,581 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 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] [2021-11-20 23:22:48,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:22:48,581 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 23:22:48,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:22:48,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1245575864, now seen corresponding path program 1 times [2021-11-20 23:22:48,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:22:48,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285539426] [2021-11-20 23:22:48,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:22:48,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:22:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:22:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1134 trivial. 0 not checked. [2021-11-20 23:22:49,476 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:22:49,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285539426] [2021-11-20 23:22:49,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285539426] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:22:49,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:22:49,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:22:49,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502375789] [2021-11-20 23:22:49,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:22:49,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:22:49,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:22:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:22:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:22:49,478 INFO L87 Difference]: Start difference. First operand 27439 states and 39747 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:22:53,324 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 23:22:55,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:01,142 WARN L515 Checker$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 23:23:05,813 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:23:08,880 WARN L515 Checker$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 23:23:10,581 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:13,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:23:15,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:17,601 WARN L515 Checker$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 23:23:21,220 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:27,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:33,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:35,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:38,280 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:40,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:43,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:45,661 WARN L515 Checker$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 23:23:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:23:46,532 INFO L93 Difference]: Finished difference Result 27452 states and 39756 transitions. [2021-11-20 23:23:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:23:46,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 237 [2021-11-20 23:23:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:23:46,679 INFO L225 Difference]: With dead ends: 27452 [2021-11-20 23:23:46,679 INFO L226 Difference]: Without dead ends: 27450 [2021-11-20 23:23:46,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:23:46,695 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 3477 mSDsluCounter, 14347 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 17334 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:23:46,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3495 Valid, 17334 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2182 Invalid, 14 Unknown, 0 Unchecked, 56.2s Time] [2021-11-20 23:23:46,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27450 states. [2021-11-20 23:23:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27450 to 27443. [2021-11-20 23:23:48,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27443 states, 17374 states have (on average 1.3353862092782318) internal successors, (23201), 17582 states have internal predecessors, (23201), 8266 states have call successors, (8266), 1832 states have call predecessors, (8266), 1800 states have return successors, (8283), 8133 states have call predecessors, (8283), 8258 states have call successors, (8283) [2021-11-20 23:23:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27443 states to 27443 states and 39750 transitions. [2021-11-20 23:23:48,486 INFO L78 Accepts]: Start accepts. Automaton has 27443 states and 39750 transitions. Word has length 237 [2021-11-20 23:23:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:23:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 27443 states and 39750 transitions. [2021-11-20 23:23:48,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:23:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 27443 states and 39750 transitions. [2021-11-20 23:23:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-20 23:23:48,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:23:48,496 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:23:48,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:23:48,497 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 23:23:48,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:23:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2073658712, now seen corresponding path program 1 times [2021-11-20 23:23:48,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:23:48,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186590143] [2021-11-20 23:23:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:23:48,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:23:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:23:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2021-11-20 23:23:49,542 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:23:49,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186590143] [2021-11-20 23:23:49,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186590143] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:23:49,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:23:49,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:23:49,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766024613] [2021-11-20 23:23:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:23:49,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:23:49,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:23:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:23:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:23:49,544 INFO L87 Difference]: Start difference. First operand 27443 states and 39750 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:23:53,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:23:59,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:24:02,466 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:08,392 WARN L515 Checker$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 23:24:10,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:16,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:22,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:25,140 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:27,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:29,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:32,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:34,880 WARN L515 Checker$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 23:24:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:24:35,773 INFO L93 Difference]: Finished difference Result 27456 states and 39759 transitions. [2021-11-20 23:24:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:24:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 243 [2021-11-20 23:24:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:24:35,906 INFO L225 Difference]: With dead ends: 27456 [2021-11-20 23:24:35,906 INFO L226 Difference]: Without dead ends: 27454 [2021-11-20 23:24:35,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:24:35,922 INFO L933 BasicCegarLoop]: 4595 mSDtfsCounter, 3480 mSDsluCounter, 14347 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 17334 SdHoareTripleChecker+Invalid, 2198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:24:35,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3495 Valid, 17334 Invalid, 2198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2186 Invalid, 10 Unknown, 0 Unchecked, 45.5s Time] [2021-11-20 23:24:35,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27454 states. [2021-11-20 23:24:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27454 to 27447. [2021-11-20 23:24:37,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27447 states, 17377 states have (on average 1.3353283075329458) internal successors, (23204), 17585 states have internal predecessors, (23204), 8266 states have call successors, (8266), 1833 states have call predecessors, (8266), 1801 states have return successors, (8283), 8133 states have call predecessors, (8283), 8258 states have call successors, (8283) [2021-11-20 23:24:37,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27447 states to 27447 states and 39753 transitions. [2021-11-20 23:24:37,361 INFO L78 Accepts]: Start accepts. Automaton has 27447 states and 39753 transitions. Word has length 243 [2021-11-20 23:24:37,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:24:37,363 INFO L470 AbstractCegarLoop]: Abstraction has 27447 states and 39753 transitions. [2021-11-20 23:24:37,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-20 23:24:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27447 states and 39753 transitions. [2021-11-20 23:24:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-20 23:24:37,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:24:37,380 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 4, 3, 3, 2, 2, 2, 2, 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] [2021-11-20 23:24:37,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:24:37,381 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 23:24:37,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:24:37,382 INFO L85 PathProgramCache]: Analyzing trace with hash -792893432, now seen corresponding path program 1 times [2021-11-20 23:24:37,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:24:37,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781100693] [2021-11-20 23:24:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:24:37,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:24:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:24:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1151 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1145 trivial. 0 not checked. [2021-11-20 23:24:38,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:24:38,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781100693] [2021-11-20 23:24:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781100693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:24:38,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:24:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:24:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477091560] [2021-11-20 23:24:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:24:38,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:24:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:24:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:24:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:24:38,483 INFO L87 Difference]: Start difference. First operand 27447 states and 39753 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:24:42,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:47,732 WARN L515 Checker$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 23:24:50,607 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:24:55,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:24:57,257 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:25:00,717 WARN L515 Checker$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 23:25:07,079 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:12,535 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:15,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:17,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:19,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:22,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:24,850 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 23:25:25,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:25:25,856 INFO L93 Difference]: Finished difference Result 27744 states and 40110 transitions. [2021-11-20 23:25:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:25:25,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 250 [2021-11-20 23:25:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:25:26,032 INFO L225 Difference]: With dead ends: 27744 [2021-11-20 23:25:26,032 INFO L226 Difference]: Without dead ends: 27742 [2021-11-20 23:25:26,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:25:26,043 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 3435 mSDsluCounter, 14402 mSDsCounter, 0 mSdLazyCounter, 2215 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 17388 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2215 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:25:26,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3450 Valid, 17388 Invalid, 2228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2215 Invalid, 11 Unknown, 0 Unchecked, 46.5s Time] [2021-11-20 23:25:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27742 states. [2021-11-20 23:25:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27742 to 27717. [2021-11-20 23:25:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27717 states, 17536 states have (on average 1.334796989051095) internal successors, (23407), 17756 states have internal predecessors, (23407), 8330 states have call successors, (8330), 1878 states have call predecessors, (8330), 1848 states have return successors, (8349), 8187 states have call predecessors, (8349), 8322 states have call successors, (8349) [2021-11-20 23:25:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27717 states to 27717 states and 40086 transitions. [2021-11-20 23:25:27,302 INFO L78 Accepts]: Start accepts. Automaton has 27717 states and 40086 transitions. Word has length 250 [2021-11-20 23:25:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:25:27,303 INFO L470 AbstractCegarLoop]: Abstraction has 27717 states and 40086 transitions. [2021-11-20 23:25:27,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:25:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 27717 states and 40086 transitions. [2021-11-20 23:25:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-20 23:25:27,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:25:27,316 INFO L514 BasicCegarLoop]: trace histogram [18, 16, 16, 16, 16, 16, 16, 4, 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] [2021-11-20 23:25:27,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:25:27,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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 23:25:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:25:27,317 INFO L85 PathProgramCache]: Analyzing trace with hash 159393108, now seen corresponding path program 1 times [2021-11-20 23:25:27,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:25:27,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360626929] [2021-11-20 23:25:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:25:27,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:25:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:25:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2021-11-20 23:25:27,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:25:27,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360626929] [2021-11-20 23:25:27,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360626929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:25:27,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:25:27,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:25:27,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966100516] [2021-11-20 23:25:27,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:25:27,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:25:27,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:25:27,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:25:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:25:27,933 INFO L87 Difference]: Start difference. First operand 27717 states and 40086 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:25:32,469 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 23:25:35,122 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:37,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:25:38,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:41,813 WARN L515 Checker$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 23:25:43,887 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:46,034 WARN L515 Checker$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 23:25:50,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:54,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:25:57,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:00,130 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:02,469 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:04,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:07,113 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 23:26:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:26:08,128 INFO L93 Difference]: Finished difference Result 81213 states and 117476 transitions. [2021-11-20 23:26:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:26:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 243 [2021-11-20 23:26:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:26:08,332 INFO L225 Difference]: With dead ends: 81213 [2021-11-20 23:26:08,332 INFO L226 Difference]: Without dead ends: 53529 [2021-11-20 23:26:08,556 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 23:26:08,557 INFO L933 BasicCegarLoop]: 4640 mSDtfsCounter, 3397 mSDsluCounter, 4099 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 5 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 8252 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:26:08,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 8252 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1075 Invalid, 12 Unknown, 0 Unchecked, 38.4s Time] [2021-11-20 23:26:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53529 states. [2021-11-20 23:26:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53529 to 53406. [2021-11-20 23:26:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53406 states, 33733 states have (on average 1.3332938072510598) internal successors, (44976), 34207 states have internal predecessors, (44976), 16098 states have call successors, (16098), 3632 states have call predecessors, (16098), 3572 states have return successors, (16153), 15775 states have call predecessors, (16153), 16090 states have call successors, (16153) [2021-11-20 23:26:10,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53406 states to 53406 states and 77227 transitions. [2021-11-20 23:26:10,666 INFO L78 Accepts]: Start accepts. Automaton has 53406 states and 77227 transitions. Word has length 243 [2021-11-20 23:26:10,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:26:10,667 INFO L470 AbstractCegarLoop]: Abstraction has 53406 states and 77227 transitions. [2021-11-20 23:26:10,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-20 23:26:10,667 INFO L276 IsEmpty]: Start isEmpty. Operand 53406 states and 77227 transitions. [2021-11-20 23:26:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-20 23:26:10,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:26:10,678 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 4, 4, 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] [2021-11-20 23:26:10,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 23:26:10,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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 23:26:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:26:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 612891433, now seen corresponding path program 1 times [2021-11-20 23:26:10,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:26:10,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361741550] [2021-11-20 23:26:10,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:26:10,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:26:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:26:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1118 trivial. 0 not checked. [2021-11-20 23:26:11,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:26:11,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361741550] [2021-11-20 23:26:11,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361741550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:26:11,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:26:11,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:26:11,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620248672] [2021-11-20 23:26:11,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:26:11,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:26:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:26:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:26:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:26:11,364 INFO L87 Difference]: Start difference. First operand 53406 states and 77227 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:26:15,966 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 23:26:19,595 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:25,298 WARN L515 Checker$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 23:26:27,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:26:29,861 WARN L515 Checker$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 23:26:34,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:36,994 WARN L515 Checker$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 23:26:39,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:44,539 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:46,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:49,268 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:51,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:53,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:26:56,123 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 23:26:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:26:57,355 INFO L93 Difference]: Finished difference Result 122746 states and 177636 transitions. [2021-11-20 23:26:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:26:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 248 [2021-11-20 23:26:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:26:57,630 INFO L225 Difference]: With dead ends: 122746 [2021-11-20 23:26:57,630 INFO L226 Difference]: Without dead ends: 69792 [2021-11-20 23:26:57,920 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 23:26:57,921 INFO L933 BasicCegarLoop]: 5510 mSDtfsCounter, 2278 mSDsluCounter, 4061 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 15 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 9090 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:26:57,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2283 Valid, 9090 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1319 Invalid, 14 Unknown, 0 Unchecked, 43.6s Time] [2021-11-20 23:26:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69792 states. [2021-11-20 23:27:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69792 to 69678. [2021-11-20 23:27:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69678 states, 44293 states have (on average 1.3361027701894204) internal successors, (59180), 44887 states have internal predecessors, (59180), 20702 states have call successors, (20702), 4764 states have call predecessors, (20702), 4680 states have return successors, (20773), 20267 states have call predecessors, (20773), 20694 states have call successors, (20773) [2021-11-20 23:27:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69678 states to 69678 states and 100655 transitions. [2021-11-20 23:27:00,895 INFO L78 Accepts]: Start accepts. Automaton has 69678 states and 100655 transitions. Word has length 248 [2021-11-20 23:27:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:27:00,895 INFO L470 AbstractCegarLoop]: Abstraction has 69678 states and 100655 transitions. [2021-11-20 23:27:00,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:27:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 69678 states and 100655 transitions. [2021-11-20 23:27:00,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-20 23:27:00,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:27:00,905 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:27:00,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 23:27:00,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:27:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:27:00,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2068248264, now seen corresponding path program 1 times [2021-11-20 23:27:00,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:27:00,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283168161] [2021-11-20 23:27:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:27:00,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:27:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:27:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1159 trivial. 0 not checked. [2021-11-20 23:27:01,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:27:01,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283168161] [2021-11-20 23:27:01,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283168161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:27:01,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:27:01,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:27:01,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13487697] [2021-11-20 23:27:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:27:01,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:27:01,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:27:01,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:27:01,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:27:01,958 INFO L87 Difference]: Start difference. First operand 69678 states and 100655 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 23:27:06,591 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 23:27:13,755 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:16,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:27:20,068 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:25,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:33,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:36,702 WARN L515 Checker$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 23:27:39,163 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:41,594 WARN L515 Checker$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 23:27:44,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:46,638 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:27:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:27:48,321 INFO L93 Difference]: Finished difference Result 103893 states and 150065 transitions. [2021-11-20 23:27:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:27:48,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 253 [2021-11-20 23:27:48,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:27:48,844 INFO L225 Difference]: With dead ends: 103893 [2021-11-20 23:27:48,844 INFO L226 Difference]: Without dead ends: 103891 [2021-11-20 23:27:48,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:27:48,879 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 3439 mSDsluCounter, 13771 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3454 SdHoareTripleChecker+Valid, 16644 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:27:48,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3454 Valid, 16644 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2012 Invalid, 10 Unknown, 0 Unchecked, 43.8s Time] [2021-11-20 23:27:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103891 states. [2021-11-20 23:27:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103891 to 103884. [2021-11-20 23:27:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103884 states, 66030 states have (on average 1.3361653793730122) internal successors, (88227), 66910 states have internal predecessors, (88227), 30862 states have call successors, (30862), 7120 states have call predecessors, (30862), 6989 states have return successors, (30969), 30214 states have call predecessors, (30969), 30850 states have call successors, (30969) [2021-11-20 23:27:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103884 states to 103884 states and 150058 transitions. [2021-11-20 23:27:53,532 INFO L78 Accepts]: Start accepts. Automaton has 103884 states and 150058 transitions. Word has length 253 [2021-11-20 23:27:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:27:53,533 INFO L470 AbstractCegarLoop]: Abstraction has 103884 states and 150058 transitions. [2021-11-20 23:27:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 23:27:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 103884 states and 150058 transitions. [2021-11-20 23:27:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-20 23:27:53,545 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:27:53,546 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 6, 5, 5, 4, 4, 2, 2, 2, 2, 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] [2021-11-20 23:27:53,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 23:27:53,546 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:27:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:27:53,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1955955752, now seen corresponding path program 1 times [2021-11-20 23:27:53,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:27:53,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905931395] [2021-11-20 23:27:53,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:27:53,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:27:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:27:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1173 trivial. 0 not checked. [2021-11-20 23:27:54,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:27:54,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905931395] [2021-11-20 23:27:54,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905931395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:27:54,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:27:54,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:27:54,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918698250] [2021-11-20 23:27:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:27:54,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:27:54,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:27:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:27:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:27:54,536 INFO L87 Difference]: Start difference. First operand 103884 states and 150058 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-20 23:27:59,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:04,296 WARN L515 Checker$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 23:28:07,300 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:28:10,368 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:28:13,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:15,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:28:16,635 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:28:20,626 WARN L515 Checker$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 23:28:21,773 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:28:25,085 WARN L515 Checker$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 23:28:31,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:37,066 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:40,255 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:42,688 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:45,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:47,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:28:50,153 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 23:28:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:28:51,837 INFO L93 Difference]: Finished difference Result 103897 states and 150067 transitions. [2021-11-20 23:28:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:28:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 260 [2021-11-20 23:28:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:28:52,350 INFO L225 Difference]: With dead ends: 103897 [2021-11-20 23:28:52,350 INFO L226 Difference]: Without dead ends: 103895 [2021-11-20 23:28:52,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:28:52,385 INFO L933 BasicCegarLoop]: 5036 mSDtfsCounter, 3412 mSDsluCounter, 15371 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 18657 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:28:52,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 18657 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2398 Invalid, 12 Unknown, 0 Unchecked, 54.6s Time] [2021-11-20 23:28:52,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103895 states. [2021-11-20 23:28:56,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103895 to 103888. [2021-11-20 23:28:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103888 states, 66033 states have (on average 1.3361501067647994) internal successors, (88230), 66913 states have internal predecessors, (88230), 30862 states have call successors, (30862), 7121 states have call predecessors, (30862), 6990 states have return successors, (30969), 30214 states have call predecessors, (30969), 30850 states have call successors, (30969) [2021-11-20 23:28:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103888 states to 103888 states and 150061 transitions. [2021-11-20 23:28:57,006 INFO L78 Accepts]: Start accepts. Automaton has 103888 states and 150061 transitions. Word has length 260 [2021-11-20 23:28:57,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:28:57,007 INFO L470 AbstractCegarLoop]: Abstraction has 103888 states and 150061 transitions. [2021-11-20 23:28:57,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-20 23:28:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 103888 states and 150061 transitions. [2021-11-20 23:28:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-20 23:28:57,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:28:57,017 INFO L514 BasicCegarLoop]: trace histogram [20, 16, 16, 16, 16, 16, 16, 7, 6, 6, 4, 4, 2, 2, 2, 2, 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] [2021-11-20 23:28:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 23:28:57,017 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-20 23:28:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:28:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1761361617, now seen corresponding path program 1 times [2021-11-20 23:28:57,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:28:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660531117] [2021-11-20 23:28:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:28:57,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:28:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:28:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2021-11-20 23:28:58,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:28:58,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660531117] [2021-11-20 23:28:58,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660531117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:28:58,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:28:58,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:28:58,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193375934] [2021-11-20 23:28:58,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:28:58,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:28:58,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:28:58,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:28:58,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:28:58,014 INFO L87 Difference]: Start difference. First operand 103888 states and 150061 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-20 23:29:02,461 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 23:29:07,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:29:12,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:29:15,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:29:19,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 23:29:24,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-20 23:29:25,831 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers []