./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash adae9e973a71be7ae6bae40bd619f2dd42436469ca3cae3ee4a6c75222eea08e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:55:50,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:55:50,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:55:50,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:55:50,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:55:50,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:55:50,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:55:50,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:55:50,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:55:50,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:55:50,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:55:50,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:55:50,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:55:50,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:55:50,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:55:50,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:55:50,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:55:50,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:55:50,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:55:50,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:55:50,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:55:50,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:55:50,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:55:50,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:55:50,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:55:50,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:55:50,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:55:50,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:55:50,337 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:55:50,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:55:50,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:55:50,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:55:50,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:55:50,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:55:50,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:55:50,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:55:50,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:55:50,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:55:50,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:55:50,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:55:50,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:55:50,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:55:50,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:55:50,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:55:50,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:55:50,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:55:50,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:55:50,415 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:55:50,416 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:55:50,416 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:55:50,416 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:55:50,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:55:50,418 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:55:50,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:55:50,419 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:55:50,419 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:55:50,419 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:55:50,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:55:50,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:55:50,420 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:55:50,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:55:50,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:55:50,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:55:50,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:55:50,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:55:50,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:55:50,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:55:50,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:55:50,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:55:50,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:55:50,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:55:50,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:55:50,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:55:50,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:55:50,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:55:50,426 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:55:50,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:55:50,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:55:50,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:55:50,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:55:50,427 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_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adae9e973a71be7ae6bae40bd619f2dd42436469ca3cae3ee4a6c75222eea08e [2021-11-25 17:55:50,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:55:50,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:55:50,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:55:50,753 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:55:50,754 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:55:50,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 17:55:50,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/data/25dd7c820/e1c3864aa31248e9ba7e1e8cfe99d833/FLAG0db30bedf [2021-11-25 17:55:52,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:55:52,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 17:55:52,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/data/25dd7c820/e1c3864aa31248e9ba7e1e8cfe99d833/FLAG0db30bedf [2021-11-25 17:55:52,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/data/25dd7c820/e1c3864aa31248e9ba7e1e8cfe99d833 [2021-11-25 17:55:52,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:55:52,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:55:52,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:55:52,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:55:52,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:55:52,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:52" (1/1) ... [2021-11-25 17:55:52,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e13f68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:55:52, skipping insertion in model container [2021-11-25 17:55:52,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:55:52" (1/1) ... [2021-11-25 17:55:52,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:55:53,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:56:01,674 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772474,772487] [2021-11-25 17:56:01,677 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772643,772656] [2021-11-25 17:56:01,678 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772810,772823] [2021-11-25 17:56:01,679 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772978,772991] [2021-11-25 17:56:01,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:56:01,847 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:56:02,916 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772474,772487] [2021-11-25 17:56:02,917 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772643,772656] [2021-11-25 17:56:02,918 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772810,772823] [2021-11-25 17:56:02,918 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_168d873d-56af-4671-83bc-c403feab3104/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i[772978,772991] [2021-11-25 17:56:02,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:56:03,494 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:56:03,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03 WrapperNode [2021-11-25 17:56:03,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:56:03,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:56:03,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:56:03,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:56:03,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:04,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:04,797 INFO L137 Inliner]: procedures = 710, calls = 11680, calls flagged for inlining = 309, calls inlined = 228, statements flattened = 12536 [2021-11-25 17:56:04,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:56:04,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:56:04,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:56:04,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:56:04,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:04,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:04,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:04,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:05,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:05,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:05,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:05,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:56:05,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:56:05,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:56:05,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:56:05,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (1/1) ... [2021-11-25 17:56:05,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:56:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:56:05,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:56:05,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_168d873d-56af-4671-83bc-c403feab3104/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:56:05,899 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 17:56:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 17:56:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 17:56:05,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 17:56:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure read_register [2021-11-25 17:56:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register [2021-11-25 17:56:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_data [2021-11-25 17:56:05,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_data [2021-11-25 17:56:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure write_register_byte [2021-11-25 17:56:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register_byte [2021-11-25 17:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:56:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:56:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 17:56:05,903 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 17:56:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work [2021-11-25 17:56:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work [2021-11-25 17:56:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_release_firmware [2021-11-25 17:56:05,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_release_firmware [2021-11-25 17:56:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_78 [2021-11-25 17:56:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_78 [2021-11-25 17:56:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 17:56:05,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 17:56:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_configure_security [2021-11-25 17:56:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_configure_security [2021-11-25 17:56:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 17:56:05,906 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 17:56:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-25 17:56:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-25 17:56:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_adapter [2021-11-25 17:56:05,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_adapter [2021-11-25 17:56:05,907 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_security_information [2021-11-25 17:56:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_security_information [2021-11-25 17:56:05,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 17:56:05,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 17:56:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 17:56:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 17:56:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 17:56:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 17:56:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 17:56:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 17:56:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 17:56:05,910 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 17:56:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mandatory_bssid [2021-11-25 17:56:05,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mandatory_bssid [2021-11-25 17:56:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:56:05,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:56:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_rfkill_set_hw_state [2021-11-25 17:56:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_rfkill_set_hw_state [2021-11-25 17:56:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure wiphy_unregister [2021-11-25 17:56:05,913 INFO L138 BoogieDeclarations]: Found implementation of procedure wiphy_unregister [2021-11-25 17:56:05,913 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_adapter [2021-11-25 17:56:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_adapter [2021-11-25 17:56:05,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 17:56:05,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 17:56:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:56:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_send_command [2021-11-25 17:56:05,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_send_command [2021-11-25 17:56:05,915 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 17:56:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 17:56:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_word [2021-11-25 17:56:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_word [2021-11-25 17:56:05,916 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-25 17:56:05,916 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-25 17:56:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure isr_scan_complete [2021-11-25 17:56:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_scan_complete [2021-11-25 17:56:05,917 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_power_mode [2021-11-25 17:56:05,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_power_mode [2021-11-25 17:56:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 17:56:05,918 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 17:56:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_byte [2021-11-25 17:56:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_byte [2021-11-25 17:56:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies_relative [2021-11-25 17:56:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies_relative [2021-11-25 17:56:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:56:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 17:56:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 17:56:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 17:56:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 17:56:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:56:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_dword [2021-11-25 17:56:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_dword [2021-11-25 17:56:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 17:56:05,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 17:56:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_channel [2021-11-25 17:56:05,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_channel [2021-11-25 17:56:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:56:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 17:56:05,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 17:56:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_up [2021-11-25 17:56:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_up [2021-11-25 17:56:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_send_commands [2021-11-25 17:56:05,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_send_commands [2021-11-25 17:56:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:56:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:56:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 17:56:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 17:56:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 17:56:05,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 17:56:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 17:56:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 17:56:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 17:56:05,927 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 17:56:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 17:56:05,928 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 17:56:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_adapter [2021-11-25 17:56:05,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_adapter [2021-11-25 17:56:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 17:56:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 17:56:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_scan_options [2021-11-25 17:56:05,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_scan_options [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_txb_free [2021-11-25 17:56:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_txb_free [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_reset_fatalerror [2021-11-25 17:56:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_reset_fatalerror [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 17:56:05,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:56:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_rates [2021-11-25 17:56:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_rates [2021-11-25 17:56:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 17:56:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 17:56:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure print_ssid [2021-11-25 17:56:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure print_ssid [2021-11-25 17:56:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 17:56:05,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 17:56:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2021-11-25 17:56:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_snapshot_free [2021-11-25 17:56:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_snapshot_free [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:56:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure snprint_line [2021-11-25 17:56:05,934 INFO L138 BoogieDeclarations]: Found implementation of procedure snprint_line [2021-11-25 17:56:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_reset [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_reset [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure sw_reset_and_clock [2021-11-25 17:56:05,935 INFO L138 BoogieDeclarations]: Found implementation of procedure sw_reset_and_clock [2021-11-25 17:56:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_enable_interrupts [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_enable_interrupts [2021-11-25 17:56:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-25 17:56:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_resume [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_resume [2021-11-25 17:56:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_uninterruptible [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_uninterruptible [2021-11-25 17:56:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:56:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure wireless_send_event [2021-11-25 17:56:05,936 INFO L138 BoogieDeclarations]: Found implementation of procedure wireless_send_event [2021-11-25 17:56:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_pci_remove_one [2021-11-25 17:56:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_pci_remove_one [2021-11-25 17:56:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_free [2021-11-25 17:56:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_free [2021-11-25 17:56:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 17:56:05,937 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 17:56:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:56:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:56:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:56:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:56:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_alloc_skb [2021-11-25 17:56:05,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_alloc_skb [2021-11-25 17:56:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_delayed_work_sync [2021-11-25 17:56:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_delayed_work_sync [2021-11-25 17:56:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_get_ordinal [2021-11-25 17:56:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_get_ordinal [2021-11-25 17:56:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_stop_adapter [2021-11-25 17:56:05,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_stop_adapter [2021-11-25 17:56:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 17:56:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 17:56:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure write_register [2021-11-25 17:56:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure write_register [2021-11-25 17:56:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_hw_set_gpio [2021-11-25 17:56:05,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_hw_set_gpio [2021-11-25 17:56:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-25 17:56:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-25 17:56:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_down [2021-11-25 17:56:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_down [2021-11-25 17:56:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_close [2021-11-25 17:56:05,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_close [2021-11-25 17:56:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-25 17:56:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_low_lock_of_ipw2100_priv [2021-11-25 17:56:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_wait_for_card_state [2021-11-25 17:56:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_wait_for_card_state [2021-11-25 17:56:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_rf_kill [2021-11-25 17:56:05,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_rf_kill [2021-11-25 17:56:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 17:56:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 17:56:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 17:56:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 17:56:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure read_register_byte [2021-11-25 17:56:05,943 INFO L138 BoogieDeclarations]: Found implementation of procedure read_register_byte [2021-11-25 17:56:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure status_queue_free [2021-11-25 17:56:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure status_queue_free [2021-11-25 17:56:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 17:56:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 17:56:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:56:05,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:56:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 17:56:05,945 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 17:56:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_rx_free [2021-11-25 17:56:05,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_rx_free [2021-11-25 17:56:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-25 17:56:05,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-25 17:56:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 17:56:05,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 17:56:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 17:56:05,946 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 17:56:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-25 17:56:05,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-25 17:56:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:56:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure mod_delayed_work [2021-11-25 17:56:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_delayed_work [2021-11-25 17:56:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 17:56:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 17:56:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_shutdown [2021-11-25 17:56:05,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_shutdown [2021-11-25 17:56:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:56:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure write_nic_word [2021-11-25 17:56:05,948 INFO L138 BoogieDeclarations]: Found implementation of procedure write_nic_word [2021-11-25 17:56:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_association_lost [2021-11-25 17:56:05,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_association_lost [2021-11-25 17:56:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_free [2021-11-25 17:56:05,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_free [2021-11-25 17:56:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_mac_address [2021-11-25 17:56:05,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_mac_address [2021-11-25 17:56:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_essid [2021-11-25 17:56:05,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_essid [2021-11-25 17:56:05,949 INFO L130 BoogieDeclarations]: Found specification of procedure is_zero_ether_addr [2021-11-25 17:56:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure is_zero_ether_addr [2021-11-25 17:56:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:56:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_disable_interrupts [2021-11-25 17:56:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_disable_interrupts [2021-11-25 17:56:05,950 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-11-25 17:56:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-11-25 17:56:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_rts_threshold [2021-11-25 17:56:05,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_rts_threshold [2021-11-25 17:56:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_byte [2021-11-25 17:56:05,951 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_byte [2021-11-25 17:56:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 17:56:05,951 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 17:56:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 17:56:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 17:56:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure free_libipw [2021-11-25 17:56:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure free_libipw [2021-11-25 17:56:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 17:56:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 17:56:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-11-25 17:56:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-11-25 17:56:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 17:56:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 17:56:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_msg_free [2021-11-25 17:56:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_msg_free [2021-11-25 17:56:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure printk_buf [2021-11-25 17:56:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure printk_buf [2021-11-25 17:56:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure ipw_ethtool_get_drvinfo [2021-11-25 17:56:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw_ethtool_get_drvinfo [2021-11-25 17:56:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-11-25 17:56:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-11-25 17:56:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_set_tx_power [2021-11-25 17:56:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_set_tx_power [2021-11-25 17:56:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 17:56:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 17:56:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-25 17:56:05,955 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-25 17:56:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 17:56:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 17:56:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-25 17:56:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-25 17:56:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_system_config [2021-11-25 17:56:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_system_config [2021-11-25 17:56:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_kill_works [2021-11-25 17:56:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_kill_works [2021-11-25 17:56:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-25 17:56:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure strnlen [2021-11-25 17:56:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:56:05,957 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:56:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:56:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_free [2021-11-25 17:56:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_free [2021-11-25 17:56:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:56:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:56:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure rf_kill_active [2021-11-25 17:56:05,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rf_kill_active [2021-11-25 17:56:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure get_seconds [2021-11-25 17:56:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure get_seconds [2021-11-25 17:56:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 17:56:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 17:56:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_allocate [2021-11-25 17:56:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_allocate [2021-11-25 17:56:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 17:56:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 17:56:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure libipw_priv [2021-11-25 17:56:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure libipw_priv [2021-11-25 17:56:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_91 [2021-11-25 17:56:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_91 [2021-11-25 17:56:05,960 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 17:56:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 17:56:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 17:56:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 17:56:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_tx_timeout [2021-11-25 17:56:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_tx_timeout [2021-11-25 17:56:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 17:56:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 17:56:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 17:56:05,962 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 17:56:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 17:56:05,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 17:56:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 17:56:05,962 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 17:56:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 17:56:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 17:56:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_open [2021-11-25 17:56:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_open [2021-11-25 17:56:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 17:56:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 17:56:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_queues_initialize [2021-11-25 17:56:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_queues_initialize [2021-11-25 17:56:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-25 17:56:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-25 17:56:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_low_lock_of_ipw2100_priv [2021-11-25 17:56:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure pm_qos_update_request [2021-11-25 17:56:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_qos_update_request [2021-11-25 17:56:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_associated [2021-11-25 17:56:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_associated [2021-11-25 17:56:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:56:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure isr_indicate_scanning [2021-11-25 17:56:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isr_indicate_scanning [2021-11-25 17:56:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure read_nic_dword [2021-11-25 17:56:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nic_dword [2021-11-25 17:56:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:56:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:56:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 17:56:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 17:56:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure bd_queue_initialize [2021-11-25 17:56:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure bd_queue_initialize [2021-11-25 17:56:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure ipw2100_start_scan [2021-11-25 17:56:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ipw2100_start_scan [2021-11-25 17:56:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-11-25 17:56:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-11-25 17:56:07,395 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:56:07,401 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:56:20,731 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:58:42,854 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:58:47,908 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:58:47,908 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 17:58:47,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:47 BoogieIcfgContainer [2021-11-25 17:58:47,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:58:47,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:58:47,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:58:47,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:58:47,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:55:52" (1/3) ... [2021-11-25 17:58:47,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fce49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:47, skipping insertion in model container [2021-11-25 17:58:47,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:56:03" (2/3) ... [2021-11-25 17:58:47,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fce49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:58:47, skipping insertion in model container [2021-11-25 17:58:47,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:58:47" (3/3) ... [2021-11-25 17:58:47,928 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-wireless-ipw2x00-ipw2100.cil.i [2021-11-25 17:58:47,935 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:58:47,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 17:58:48,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:58:48,052 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:58:48,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 17:58:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 2655 states, 1633 states have (on average 1.320269442743417) internal successors, (2156), 1661 states have internal predecessors, (2156), 853 states have call successors, (853), 166 states have call predecessors, (853), 165 states have return successors, (849), 847 states have call predecessors, (849), 849 states have call successors, (849) [2021-11-25 17:58:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 17:58:48,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:58:48,171 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 17:58:48,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:58:48,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:58:48,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1633239245, now seen corresponding path program 1 times [2021-11-25 17:58:48,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:58:48,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819640311] [2021-11-25 17:58:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:58:48,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:58:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:58:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 17:58:49,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:58:49,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819640311] [2021-11-25 17:58:49,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819640311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:58:49,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:58:49,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:58:49,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201517010] [2021-11-25 17:58:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:58:49,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:58:49,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:58:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:58:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:58:49,819 INFO L87 Difference]: Start difference. First operand has 2655 states, 1633 states have (on average 1.320269442743417) internal successors, (2156), 1661 states have internal predecessors, (2156), 853 states have call successors, (853), 166 states have call predecessors, (853), 165 states have return successors, (849), 847 states have call predecessors, (849), 849 states have call successors, (849) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:58:52,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:54,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:58:57,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:00,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:01,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:03,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:05,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:07,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:11,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:15,882 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:17,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:21,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:23,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:59:27,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:30,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:32,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:35,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:39,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:41,915 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:44,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:46,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:49,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:51,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:59:52,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:59:52,933 INFO L93 Difference]: Finished difference Result 7552 states and 11167 transitions. [2021-11-25 17:59:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:59:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2021-11-25 17:59:52,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:59:53,007 INFO L225 Difference]: With dead ends: 7552 [2021-11-25 17:59:53,007 INFO L226 Difference]: Without dead ends: 4900 [2021-11-25 17:59:53,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:59:53,051 INFO L933 BasicCegarLoop]: 4204 mSDtfsCounter, 3257 mSDsluCounter, 13100 mSDsCounter, 0 mSdLazyCounter, 1780 mSolverCounterSat, 3 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3275 SdHoareTripleChecker+Valid, 15982 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1780 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:59:53,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3275 Valid, 15982 Invalid, 1802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1780 Invalid, 19 Unknown, 0 Unchecked, 62.3s Time] [2021-11-25 17:59:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4900 states. [2021-11-25 17:59:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4900 to 4893. [2021-11-25 17:59:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 2995 states have (on average 1.3101836393989983) internal successors, (3924), 3047 states have internal predecessors, (3924), 1580 states have call successors, (1580), 317 states have call predecessors, (1580), 315 states have return successors, (1577), 1569 states have call predecessors, (1577), 1574 states have call successors, (1577) [2021-11-25 17:59:53,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 7081 transitions. [2021-11-25 17:59:53,815 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 7081 transitions. Word has length 35 [2021-11-25 17:59:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:59:53,816 INFO L470 AbstractCegarLoop]: Abstraction has 4893 states and 7081 transitions. [2021-11-25 17:59:53,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-25 17:59:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 7081 transitions. [2021-11-25 17:59:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-25 17:59:53,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:59:53,820 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-25 17:59:53,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:59:53,820 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)] === [2021-11-25 17:59:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:59:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1592076372, now seen corresponding path program 1 times [2021-11-25 17:59:53,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:59:53,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906424230] [2021-11-25 17:59:53,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:59:53,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:59:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:59:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 17:59:54,883 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:59:54,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906424230] [2021-11-25 17:59:54,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906424230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:59:54,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:59:54,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:59:54,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749873935] [2021-11-25 17:59:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:59:54,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:59:54,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:59:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:59:54,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:59:54,887 INFO L87 Difference]: Start difference. First operand 4893 states and 7081 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 17:59:57,876 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:00,057 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:02,302 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:05,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:00:08,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:00:10,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:15,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:18,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:23,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:26,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:29,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:32,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:34,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:37,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:39,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:41,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:43,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:00:43,284 INFO L93 Difference]: Finished difference Result 5387 states and 7738 transitions. [2021-11-25 18:00:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:00:43,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2021-11-25 18:00:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:00:43,341 INFO L225 Difference]: With dead ends: 5387 [2021-11-25 18:00:43,342 INFO L226 Difference]: Without dead ends: 5385 [2021-11-25 18:00:43,346 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 [2021-11-25 18:00:43,348 INFO L933 BasicCegarLoop]: 4109 mSDtfsCounter, 3126 mSDsluCounter, 12876 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 15678 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:00:43,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3146 Valid, 15678 Invalid, 1782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1764 Invalid, 16 Unknown, 0 Unchecked, 47.8s Time] [2021-11-25 18:00:43,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5385 states. [2021-11-25 18:00:43,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5385 to 5367. [2021-11-25 18:00:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 3274 states have (on average 1.307574832009774) internal successors, (4281), 3336 states have internal predecessors, (4281), 1722 states have call successors, (1722), 371 states have call predecessors, (1722), 368 states have return successors, (1717), 1704 states have call predecessors, (1717), 1714 states have call successors, (1717) [2021-11-25 18:00:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 7720 transitions. [2021-11-25 18:00:43,714 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 7720 transitions. Word has length 40 [2021-11-25 18:00:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:00:43,715 INFO L470 AbstractCegarLoop]: Abstraction has 5367 states and 7720 transitions. [2021-11-25 18:00:43,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-25 18:00:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 7720 transitions. [2021-11-25 18:00:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-25 18:00:43,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:00:43,728 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-11-25 18:00:43,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:00:43,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:00:43,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:00:43,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1950979903, now seen corresponding path program 1 times [2021-11-25 18:00:43,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:00:43,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938555807] [2021-11-25 18:00:43,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:00:43,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:00:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:00:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-25 18:00:44,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:00:44,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938555807] [2021-11-25 18:00:44,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938555807] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:00:44,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:00:44,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:00:44,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116965055] [2021-11-25 18:00:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:00:44,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:00:44,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:00:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:00:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:00:44,732 INFO L87 Difference]: Start difference. First operand 5367 states and 7720 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:00:48,271 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:00:52,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:00:56,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:00:57,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:01:00,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:04,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:06,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:08,092 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:10,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:16,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:18,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:22,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:25,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:27,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:30,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:32,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:34,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:36,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:01:36,489 INFO L93 Difference]: Finished difference Result 5384 states and 7733 transitions. [2021-11-25 18:01:36,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:01:36,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2021-11-25 18:01:36,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:01:36,548 INFO L225 Difference]: With dead ends: 5384 [2021-11-25 18:01:36,548 INFO L226 Difference]: Without dead ends: 5382 [2021-11-25 18:01:36,557 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 [2021-11-25 18:01:36,558 INFO L933 BasicCegarLoop]: 4126 mSDtfsCounter, 3241 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 1748 mSolverCounterSat, 2 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3256 SdHoareTripleChecker+Valid, 15729 SdHoareTripleChecker+Invalid, 1764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1748 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:01:36,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3256 Valid, 15729 Invalid, 1764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1748 Invalid, 14 Unknown, 0 Unchecked, 51.3s Time] [2021-11-25 18:01:36,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5382 states. [2021-11-25 18:01:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5382 to 5375. [2021-11-25 18:01:36,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5375 states, 3280 states have (on average 1.3070121951219513) internal successors, (4287), 3342 states have internal predecessors, (4287), 1722 states have call successors, (1722), 373 states have call predecessors, (1722), 370 states have return successors, (1717), 1704 states have call predecessors, (1717), 1714 states have call successors, (1717) [2021-11-25 18:01:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5375 states to 5375 states and 7726 transitions. [2021-11-25 18:01:37,050 INFO L78 Accepts]: Start accepts. Automaton has 5375 states and 7726 transitions. Word has length 51 [2021-11-25 18:01:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:01:37,052 INFO L470 AbstractCegarLoop]: Abstraction has 5375 states and 7726 transitions. [2021-11-25 18:01:37,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:01:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5375 states and 7726 transitions. [2021-11-25 18:01:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 18:01:37,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:01:37,057 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 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] [2021-11-25 18:01:37,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:01:37,058 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:01:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:01:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 764717004, now seen corresponding path program 1 times [2021-11-25 18:01:37,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:01:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380447986] [2021-11-25 18:01:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:01:37,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:01:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:01:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-25 18:01:38,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:01:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380447986] [2021-11-25 18:01:38,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380447986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:01:38,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:01:38,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:01:38,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242757138] [2021-11-25 18:01:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:01:38,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:01:38,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:01:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:01:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:01:38,139 INFO L87 Difference]: Start difference. First operand 5375 states and 7726 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:01:41,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:43,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:45,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:48,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:01:51,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:01:53,649 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:56,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.91s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:01:58,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:03,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:05,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:07,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:13,371 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:15,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:17,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:21,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:24,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:26,859 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:29,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:31,805 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:34,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:02:35,143 INFO L93 Difference]: Finished difference Result 5421 states and 7767 transitions. [2021-11-25 18:02:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:02:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2021-11-25 18:02:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:02:35,189 INFO L225 Difference]: With dead ends: 5421 [2021-11-25 18:02:35,189 INFO L226 Difference]: Without dead ends: 5419 [2021-11-25 18:02:35,194 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 [2021-11-25 18:02:35,195 INFO L933 BasicCegarLoop]: 4125 mSDtfsCounter, 3195 mSDsluCounter, 12912 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 2 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3211 SdHoareTripleChecker+Valid, 15726 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:02:35,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3211 Valid, 15726 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1766 Invalid, 18 Unknown, 0 Unchecked, 56.6s Time] [2021-11-25 18:02:35,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5419 states. [2021-11-25 18:02:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5419 to 5401. [2021-11-25 18:02:35,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 3296 states have (on average 1.3058252427184467) internal successors, (4304), 3358 states have internal predecessors, (4304), 1725 states have call successors, (1725), 380 states have call predecessors, (1725), 377 states have return successors, (1720), 1707 states have call predecessors, (1720), 1717 states have call successors, (1720) [2021-11-25 18:02:35,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 7749 transitions. [2021-11-25 18:02:35,524 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 7749 transitions. Word has length 50 [2021-11-25 18:02:35,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:02:35,524 INFO L470 AbstractCegarLoop]: Abstraction has 5401 states and 7749 transitions. [2021-11-25 18:02:35,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 18:02:35,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 7749 transitions. [2021-11-25 18:02:35,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-25 18:02:35,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:02:35,527 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2021-11-25 18:02:35,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:02:35,527 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)] === [2021-11-25 18:02:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:02:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1208659443, now seen corresponding path program 1 times [2021-11-25 18:02:35,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:02:35,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780007901] [2021-11-25 18:02:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:02:35,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:02:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:02:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-25 18:02:36,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:02:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780007901] [2021-11-25 18:02:36,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780007901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:02:36,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:02:36,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:02:36,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713724651] [2021-11-25 18:02:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:02:36,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:02:36,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:02:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:02:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:02:36,317 INFO L87 Difference]: Start difference. First operand 5401 states and 7749 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 18:02:39,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:41,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:46,672 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:02:49,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:53,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:55,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:02:58,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:00,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:03:05,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:07,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:09,855 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:12,010 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:14,336 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:18,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:20,466 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:23,023 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:25,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:28,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:30,311 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:31,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:31,348 INFO L93 Difference]: Finished difference Result 5841 states and 8334 transitions. [2021-11-25 18:03:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:03:31,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 55 [2021-11-25 18:03:31,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:31,399 INFO L225 Difference]: With dead ends: 5841 [2021-11-25 18:03:31,399 INFO L226 Difference]: Without dead ends: 5839 [2021-11-25 18:03:31,404 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 [2021-11-25 18:03:31,405 INFO L933 BasicCegarLoop]: 4120 mSDtfsCounter, 3158 mSDsluCounter, 12902 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 2 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3174 SdHoareTripleChecker+Valid, 15711 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:03:31,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3174 Valid, 15711 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1765 Invalid, 18 Unknown, 0 Unchecked, 54.6s Time] [2021-11-25 18:03:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2021-11-25 18:03:31,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5826. [2021-11-25 18:03:31,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5826 states, 3549 states have (on average 1.3037475345167653) internal successors, (4627), 3616 states have internal predecessors, (4627), 1850 states have call successors, (1850), 428 states have call predecessors, (1850), 424 states have return successors, (1843), 1830 states have call predecessors, (1843), 1840 states have call successors, (1843) [2021-11-25 18:03:31,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5826 states to 5826 states and 8320 transitions. [2021-11-25 18:03:31,745 INFO L78 Accepts]: Start accepts. Automaton has 5826 states and 8320 transitions. Word has length 55 [2021-11-25 18:03:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:31,746 INFO L470 AbstractCegarLoop]: Abstraction has 5826 states and 8320 transitions. [2021-11-25 18:03:31,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-25 18:03:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 5826 states and 8320 transitions. [2021-11-25 18:03:31,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 18:03:31,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:31,748 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 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] [2021-11-25 18:03:31,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:03:31,749 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)] === [2021-11-25 18:03:31,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:31,750 INFO L85 PathProgramCache]: Analyzing trace with hash -955088916, now seen corresponding path program 1 times [2021-11-25 18:03:31,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:31,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005404802] [2021-11-25 18:03:31,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:31,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-11-25 18:03:32,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:32,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005404802] [2021-11-25 18:03:32,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005404802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:32,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:32,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:03:32,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060221182] [2021-11-25 18:03:32,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:32,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:03:32,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:03:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:03:32,613 INFO L87 Difference]: Start difference. First operand 5826 states and 8320 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 18:03:35,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:39,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:03:41,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:03:43,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:03:44,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:03:48,273 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:50,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:03:58,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:02,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:05,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:09,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:12,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:14,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:17,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:19,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:21,899 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:22,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:22,926 INFO L93 Difference]: Finished difference Result 5843 states and 8333 transitions. [2021-11-25 18:04:22,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:04:22,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2021-11-25 18:04:22,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:22,967 INFO L225 Difference]: With dead ends: 5843 [2021-11-25 18:04:22,967 INFO L226 Difference]: Without dead ends: 5841 [2021-11-25 18:04:22,973 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 [2021-11-25 18:04:22,974 INFO L933 BasicCegarLoop]: 4126 mSDtfsCounter, 3245 mSDsluCounter, 12898 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3257 SdHoareTripleChecker+Valid, 15729 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:22,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3257 Valid, 15729 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1746 Invalid, 13 Unknown, 0 Unchecked, 49.8s Time] [2021-11-25 18:04:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5841 states. [2021-11-25 18:04:23,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5841 to 5834. [2021-11-25 18:04:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 3555 states have (on average 1.3032348804500704) internal successors, (4633), 3622 states have internal predecessors, (4633), 1850 states have call successors, (1850), 430 states have call predecessors, (1850), 426 states have return successors, (1843), 1830 states have call predecessors, (1843), 1840 states have call successors, (1843) [2021-11-25 18:04:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8326 transitions. [2021-11-25 18:04:23,316 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8326 transitions. Word has length 60 [2021-11-25 18:04:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:23,316 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 8326 transitions. [2021-11-25 18:04:23,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-25 18:04:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8326 transitions. [2021-11-25 18:04:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 18:04:23,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:23,319 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 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] [2021-11-25 18:04:23,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:04:23,319 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:04:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -498525869, now seen corresponding path program 1 times [2021-11-25 18:04:23,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:23,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231829150] [2021-11-25 18:04:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:23,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-25 18:04:24,054 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:24,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231829150] [2021-11-25 18:04:24,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231829150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:24,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:24,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:04:24,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229110553] [2021-11-25 18:04:24,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:24,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:04:24,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:24,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:04:24,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:04:24,056 INFO L87 Difference]: Start difference. First operand 5834 states and 8326 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 18:04:26,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:29,144 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:32,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:35,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:36,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:39,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:43,754 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:45,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:04:50,438 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:53,887 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:56,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:04:58,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:01,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:03,860 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:06,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:07,212 INFO L93 Difference]: Finished difference Result 5852 states and 8340 transitions. [2021-11-25 18:05:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:05:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 65 [2021-11-25 18:05:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:07,241 INFO L225 Difference]: With dead ends: 5852 [2021-11-25 18:05:07,242 INFO L226 Difference]: Without dead ends: 5850 [2021-11-25 18:05:07,247 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 [2021-11-25 18:05:07,248 INFO L933 BasicCegarLoop]: 4177 mSDtfsCounter, 3167 mSDsluCounter, 13015 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3181 SdHoareTripleChecker+Valid, 15882 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:07,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3181 Valid, 15882 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1774 Invalid, 12 Unknown, 0 Unchecked, 42.7s Time] [2021-11-25 18:05:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5850 states. [2021-11-25 18:05:07,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5850 to 5838. [2021-11-25 18:05:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5838 states, 3558 states have (on average 1.3029792017987634) internal successors, (4636), 3625 states have internal predecessors, (4636), 1850 states have call successors, (1850), 431 states have call predecessors, (1850), 427 states have return successors, (1843), 1830 states have call predecessors, (1843), 1840 states have call successors, (1843) [2021-11-25 18:05:07,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5838 states to 5838 states and 8329 transitions. [2021-11-25 18:05:07,659 INFO L78 Accepts]: Start accepts. Automaton has 5838 states and 8329 transitions. Word has length 65 [2021-11-25 18:05:07,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:07,659 INFO L470 AbstractCegarLoop]: Abstraction has 5838 states and 8329 transitions. [2021-11-25 18:05:07,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-25 18:05:07,660 INFO L276 IsEmpty]: Start isEmpty. Operand 5838 states and 8329 transitions. [2021-11-25 18:05:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-25 18:05:07,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:07,662 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 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] [2021-11-25 18:05:07,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:05:07,663 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:05:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash 506093580, now seen corresponding path program 1 times [2021-11-25 18:05:07,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:07,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549142950] [2021-11-25 18:05:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:07,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:08,363 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-25 18:05:08,363 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:08,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549142950] [2021-11-25 18:05:08,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549142950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:08,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:08,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:05:08,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261986031] [2021-11-25 18:05:08,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:08,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:05:08,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:08,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:05:08,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:05:08,365 INFO L87 Difference]: Start difference. First operand 5838 states and 8329 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:05:11,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:16,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:18,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:05:21,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:26,316 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:30,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:33,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:37,009 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:39,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:41,898 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:44,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:46,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:49,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:50,423 INFO L93 Difference]: Finished difference Result 9068 states and 12900 transitions. [2021-11-25 18:05:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:05:50,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2021-11-25 18:05:50,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:50,480 INFO L225 Difference]: With dead ends: 9068 [2021-11-25 18:05:50,481 INFO L226 Difference]: Without dead ends: 9066 [2021-11-25 18:05:50,490 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 [2021-11-25 18:05:50,491 INFO L933 BasicCegarLoop]: 4094 mSDtfsCounter, 3276 mSDsluCounter, 11774 mSDsCounter, 0 mSdLazyCounter, 1738 mSolverCounterSat, 3 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 14615 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1738 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:50,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3285 Valid, 14615 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1738 Invalid, 13 Unknown, 0 Unchecked, 41.5s Time] [2021-11-25 18:05:50,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9066 states. [2021-11-25 18:05:51,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9066 to 9051. [2021-11-25 18:05:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9051 states, 5508 states have (on average 1.3001089324618735) internal successors, (7161), 5646 states have internal predecessors, (7161), 2834 states have call successors, (2834), 729 states have call predecessors, (2834), 706 states have return successors, (2881), 2756 states have call predecessors, (2881), 2816 states have call successors, (2881) [2021-11-25 18:05:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9051 states to 9051 states and 12876 transitions. [2021-11-25 18:05:51,089 INFO L78 Accepts]: Start accepts. Automaton has 9051 states and 12876 transitions. Word has length 70 [2021-11-25 18:05:51,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:51,089 INFO L470 AbstractCegarLoop]: Abstraction has 9051 states and 12876 transitions. [2021-11-25 18:05:51,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-25 18:05:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 9051 states and 12876 transitions. [2021-11-25 18:05:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-25 18:05:51,093 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:51,093 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 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] [2021-11-25 18:05:51,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:05:51,093 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:05:51,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash -705528653, now seen corresponding path program 1 times [2021-11-25 18:05:51,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791091902] [2021-11-25 18:05:51,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:51,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:51,873 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 18:05:51,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:51,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791091902] [2021-11-25 18:05:51,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791091902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:05:51,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:05:51,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:05:51,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86270309] [2021-11-25 18:05:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:05:51,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:05:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:05:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:05:51,876 INFO L87 Difference]: Start difference. First operand 9051 states and 12876 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 18:05:54,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:05:56,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:01,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:03,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:05,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:06,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:09,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:11,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:16,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:19,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:21,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:25,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:27,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:31,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:34,076 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:36,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:39,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:41,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:43,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:45,115 INFO L93 Difference]: Finished difference Result 9076 states and 12897 transitions. [2021-11-25 18:06:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:06:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2021-11-25 18:06:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:45,161 INFO L225 Difference]: With dead ends: 9076 [2021-11-25 18:06:45,161 INFO L226 Difference]: Without dead ends: 9074 [2021-11-25 18:06:45,168 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 [2021-11-25 18:06:45,169 INFO L933 BasicCegarLoop]: 4110 mSDtfsCounter, 3176 mSDsluCounter, 12863 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 2 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 15681 SdHoareTripleChecker+Invalid, 1758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:45,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3187 Valid, 15681 Invalid, 1758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1739 Invalid, 17 Unknown, 0 Unchecked, 52.7s Time] [2021-11-25 18:06:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9074 states. [2021-11-25 18:06:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9074 to 9067. [2021-11-25 18:06:45,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9067 states, 5520 states have (on average 1.2994565217391305) internal successors, (7173), 5658 states have internal predecessors, (7173), 2834 states have call successors, (2834), 733 states have call predecessors, (2834), 710 states have return successors, (2881), 2756 states have call predecessors, (2881), 2816 states have call successors, (2881) [2021-11-25 18:06:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9067 states to 9067 states and 12888 transitions. [2021-11-25 18:06:45,749 INFO L78 Accepts]: Start accepts. Automaton has 9067 states and 12888 transitions. Word has length 75 [2021-11-25 18:06:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:45,751 INFO L470 AbstractCegarLoop]: Abstraction has 9067 states and 12888 transitions. [2021-11-25 18:06:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-25 18:06:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 9067 states and 12888 transitions. [2021-11-25 18:06:45,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-25 18:06:45,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:45,761 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:06:45,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:06:45,762 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:06:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1255769282, now seen corresponding path program 1 times [2021-11-25 18:06:45,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:45,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646879051] [2021-11-25 18:06:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:45,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:06:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-25 18:06:46,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:06:46,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646879051] [2021-11-25 18:06:46,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646879051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:06:46,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:06:46,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:06:46,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339115813] [2021-11-25 18:06:46,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:06:46,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:06:46,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:46,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:06:46,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:06:46,523 INFO L87 Difference]: Start difference. First operand 9067 states and 12888 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:06:49,551 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:06:52,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:55,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:06:57,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:00,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:04,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:06,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:07,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:09,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:12,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:15,971 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:18,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:22,359 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:24,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:27,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:29,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:32,451 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:34,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:07:35,940 INFO L93 Difference]: Finished difference Result 9098 states and 12915 transitions. [2021-11-25 18:07:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:07:35,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 86 [2021-11-25 18:07:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:07:35,991 INFO L225 Difference]: With dead ends: 9098 [2021-11-25 18:07:35,992 INFO L226 Difference]: Without dead ends: 9096 [2021-11-25 18:07:36,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:07:36,003 INFO L933 BasicCegarLoop]: 4132 mSDtfsCounter, 3192 mSDsluCounter, 12920 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 2 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 15747 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:07:36,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3203 Valid, 15747 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1765 Invalid, 12 Unknown, 0 Unchecked, 48.8s Time] [2021-11-25 18:07:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9096 states. [2021-11-25 18:07:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9096 to 9083. [2021-11-25 18:07:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9083 states, 5532 states have (on average 1.2988069414316703) internal successors, (7185), 5670 states have internal predecessors, (7185), 2834 states have call successors, (2834), 737 states have call predecessors, (2834), 714 states have return successors, (2881), 2756 states have call predecessors, (2881), 2816 states have call successors, (2881) [2021-11-25 18:07:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9083 states to 9083 states and 12900 transitions. [2021-11-25 18:07:36,602 INFO L78 Accepts]: Start accepts. Automaton has 9083 states and 12900 transitions. Word has length 86 [2021-11-25 18:07:36,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:07:36,603 INFO L470 AbstractCegarLoop]: Abstraction has 9083 states and 12900 transitions. [2021-11-25 18:07:36,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-25 18:07:36,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9083 states and 12900 transitions. [2021-11-25 18:07:36,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 18:07:36,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:07:36,607 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:07:36,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:07:36,608 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:07:36,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:07:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1529102271, now seen corresponding path program 1 times [2021-11-25 18:07:36,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:07:36,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429598995] [2021-11-25 18:07:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:07:36,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:07:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-25 18:07:37,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:37,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429598995] [2021-11-25 18:07:37,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429598995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:07:37,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:07:37,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:07:37,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012825015] [2021-11-25 18:07:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:07:37,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:07:37,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:07:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:07:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:07:37,391 INFO L87 Difference]: Start difference. First operand 9083 states and 12900 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 18:07:40,378 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:42,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:45,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:49,031 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:50,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:52,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:07:55,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:07:59,692 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:01,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:02,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:06,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:08:10,995 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:13,257 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:17,328 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:19,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:22,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:24,877 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:27,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:29,693 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:31,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:08:31,345 INFO L93 Difference]: Finished difference Result 9100 states and 12913 transitions. [2021-11-25 18:08:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:08:31,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2021-11-25 18:08:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:08:31,383 INFO L225 Difference]: With dead ends: 9100 [2021-11-25 18:08:31,383 INFO L226 Difference]: Without dead ends: 9098 [2021-11-25 18:08:31,386 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 [2021-11-25 18:08:31,387 INFO L933 BasicCegarLoop]: 4192 mSDtfsCounter, 3236 mSDsluCounter, 13041 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3243 SdHoareTripleChecker+Valid, 15927 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:08:31,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3243 Valid, 15927 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1764 Invalid, 13 Unknown, 0 Unchecked, 53.3s Time] [2021-11-25 18:08:31,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2021-11-25 18:08:31,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 9091. [2021-11-25 18:08:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9091 states, 5538 states have (on average 1.2984832069339112) internal successors, (7191), 5676 states have internal predecessors, (7191), 2834 states have call successors, (2834), 739 states have call predecessors, (2834), 716 states have return successors, (2881), 2756 states have call predecessors, (2881), 2816 states have call successors, (2881) [2021-11-25 18:08:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9091 states to 9091 states and 12906 transitions. [2021-11-25 18:08:31,865 INFO L78 Accepts]: Start accepts. Automaton has 9091 states and 12906 transitions. Word has length 91 [2021-11-25 18:08:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:08:31,866 INFO L470 AbstractCegarLoop]: Abstraction has 9091 states and 12906 transitions. [2021-11-25 18:08:31,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 18:08:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9091 states and 12906 transitions. [2021-11-25 18:08:31,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-25 18:08:31,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:08:31,869 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:08:31,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:08:31,870 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:08:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:08:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -463344623, now seen corresponding path program 1 times [2021-11-25 18:08:31,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:08:31,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485649490] [2021-11-25 18:08:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:08:31,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:08:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:08:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-25 18:08:32,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:08:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485649490] [2021-11-25 18:08:32,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485649490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:08:32,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:08:32,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:08:32,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713393201] [2021-11-25 18:08:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:08:32,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:08:32,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:08:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:08:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:08:32,560 INFO L87 Difference]: Start difference. First operand 9091 states and 12906 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-25 18:08:35,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:38,097 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:08:39,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:08:42,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:46,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:48,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:52,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:54,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:57,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:08:59,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []