./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI --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 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:08:57,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:08:57,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:08:57,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:08:57,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:08:57,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:08:57,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:08:57,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:08:57,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:08:57,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:08:57,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:08:57,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:08:57,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:08:57,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:08:57,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:08:57,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:08:57,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:08:57,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:08:57,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:08:57,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:08:57,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:08:57,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:08:57,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:08:57,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:08:57,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:08:57,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:08:57,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:08:57,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:08:57,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:08:57,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:08:57,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:08:57,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:08:57,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:08:57,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:08:57,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:08:57,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:08:57,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:08:57,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:08:57,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:08:57,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:08:57,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:08:57,297 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:08:57,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:08:57,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:08:57,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:08:57,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:08:57,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:08:57,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:08:57,338 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:08:57,339 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:08:57,339 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:08:57,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:08:57,340 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:08:57,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:08:57,340 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:08:57,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:08:57,341 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:08:57,341 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:08:57,341 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:08:57,341 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:08:57,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:08:57,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:08:57,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:08:57,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:08:57,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:08:57,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:08:57,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:08:57,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:08:57,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:08:57,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:08:57,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2022-11-03 02:08:57,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:08:57,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:08:57,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:08:57,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:08:57,763 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:08:57,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-03 02:08:57,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/data/951cb3a87/0647372473de432c95cb107bc9e5e40b/FLAG2c0857976 [2022-11-03 02:08:58,877 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:08:58,878 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-03 02:08:58,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/data/951cb3a87/0647372473de432c95cb107bc9e5e40b/FLAG2c0857976 [2022-11-03 02:08:59,208 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/data/951cb3a87/0647372473de432c95cb107bc9e5e40b [2022-11-03 02:08:59,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:08:59,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:08:59,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:08:59,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:08:59,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:08:59,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:08:59" (1/1) ... [2022-11-03 02:08:59,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a22dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:08:59, skipping insertion in model container [2022-11-03 02:08:59,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:08:59" (1/1) ... [2022-11-03 02:08:59,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:08:59,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:09:02,767 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_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2022-11-03 02:09:02,771 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_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2022-11-03 02:09:02,771 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_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2022-11-03 02:09:02,772 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_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2022-11-03 02:09:02,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:02,824 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:09:03,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[347848,347861] [2022-11-03 02:09:03,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348017,348030] [2022-11-03 02:09:03,215 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348184,348197] [2022-11-03 02:09:03,216 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_1be2d42b-d67a-4208-89db-40dd5a676ae3/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i[348352,348365] [2022-11-03 02:09:03,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:09:03,410 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:09:03,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03 WrapperNode [2022-11-03 02:09:03,411 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:09:03,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:03,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:09:03,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:09:03,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,786 INFO L138 Inliner]: procedures = 451, calls = 2209, calls flagged for inlining = 206, calls inlined = 184, statements flattened = 5139 [2022-11-03 02:09:03,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:09:03,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:09:03,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:09:03,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:09:03,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:03,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:04,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:04,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:04,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:04,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:09:04,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:09:04,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:09:04,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:09:04,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (1/1) ... [2022-11-03 02:09:04,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:09:04,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:04,157 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:09:04,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:09:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:09:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:09:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:09:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:09:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:09:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:09:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:09:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:09:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-11-03 02:09:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-11-03 02:09:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:09:04,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:09:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-11-03 02:09:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-11-03 02:09:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:09:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:09:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-03 02:09:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-03 02:09:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:09:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:09:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-11-03 02:09:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-11-03 02:09:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:09:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:09:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2022-11-03 02:09:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2022-11-03 02:09:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:09:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:09:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_close [2022-11-03 02:09:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_close [2022-11-03 02:09:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-11-03 02:09:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-11-03 02:09:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:09:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:09:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:09:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:09:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-03 02:09:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-03 02:09:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:09:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:09:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-11-03 02:09:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-11-03 02:09:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-11-03 02:09:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-11-03 02:09:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:09:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-03 02:09:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-03 02:09:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:09:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:09:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:09:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:09:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-11-03 02:09:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-11-03 02:09:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:09:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:09:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:09:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-11-03 02:09:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-11-03 02:09:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:09:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:09:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:09:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:09:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:09:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-11-03 02:09:04,256 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-11-03 02:09:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:09:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-03 02:09:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-03 02:09:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-11-03 02:09:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-11-03 02:09:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:09:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:09:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:09:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:09:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-11-03 02:09:04,258 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-11-03 02:09:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-11-03 02:09:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-11-03 02:09:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:09:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:09:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:09:04,260 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:09:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-11-03 02:09:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-11-03 02:09:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:09:04,261 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:09:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:09:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:09:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-11-03 02:09:04,262 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-11-03 02:09:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-11-03 02:09:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-11-03 02:09:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:09:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:09:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:09:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-03 02:09:04,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-03 02:09:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-11-03 02:09:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-11-03 02:09:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-03 02:09:04,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-03 02:09:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:09:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:09:04,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:09:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:09:04,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:09:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:09:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:09:04,269 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_open [2022-11-03 02:09:04,269 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_open [2022-11-03 02:09:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:09:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:09:04,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-11-03 02:09:04,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-11-03 02:09:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:09:04,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:09:04,276 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:09:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:09:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:09:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:09:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:09:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:09:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-11-03 02:09:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-11-03 02:09:04,277 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-11-03 02:09:04,277 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:09:04,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:09:04,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:09:04,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:09:04,278 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-03 02:09:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-03 02:09:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-03 02:09:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-03 02:09:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-11-03 02:09:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-11-03 02:09:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:09:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:09:04,279 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:09:04,279 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:09:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:09:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:09:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:09:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:09:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-11-03 02:09:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-11-03 02:09:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-11-03 02:09:04,280 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-11-03 02:09:04,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:09:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-03 02:09:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-03 02:09:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:09:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-11-03 02:09:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-11-03 02:09:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-11-03 02:09:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-11-03 02:09:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:09:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 02:09:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 02:09:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-03 02:09:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-03 02:09:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-03 02:09:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-03 02:09:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:09:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:09:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:09:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:09:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:09:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:09:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:09:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:09:04,283 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-11-03 02:09:04,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-11-03 02:09:04,284 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-11-03 02:09:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-11-03 02:09:04,285 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-11-03 02:09:04,285 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:09:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:09:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:09:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:09:04,286 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:09:04,286 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 02:09:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 02:09:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:09:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:09:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-11-03 02:09:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-11-03 02:09:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-11-03 02:09:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-11-03 02:09:04,287 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:09:04,287 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:09:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-11-03 02:09:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-11-03 02:09:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:09:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:09:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-11-03 02:09:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-11-03 02:09:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-11-03 02:09:04,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-11-03 02:09:04,288 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-11-03 02:09:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-11-03 02:09:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-03 02:09:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-03 02:09:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-11-03 02:09:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-11-03 02:09:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:09:04,289 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:09:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:09:04,289 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-11-03 02:09:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-11-03 02:09:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:09:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:09:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-11-03 02:09:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-11-03 02:09:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-03 02:09:04,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-03 02:09:05,255 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:09:05,263 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:09:05,713 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:09:12,089 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-03 02:09:12,220 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:09:13,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:09:13,732 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:09:13,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:13 BoogieIcfgContainer [2022-11-03 02:09:13,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:09:13,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:09:13,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:09:13,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:09:13,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:08:59" (1/3) ... [2022-11-03 02:09:13,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750767ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:13, skipping insertion in model container [2022-11-03 02:09:13,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:09:03" (2/3) ... [2022-11-03 02:09:13,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@750767ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:09:13, skipping insertion in model container [2022-11-03 02:09:13,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:09:13" (3/3) ... [2022-11-03 02:09:13,747 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-11-03 02:09:13,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:09:13,767 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:09:13,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:09:13,932 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@60faa261, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:09:13,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:09:13,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 1426 states, 808 states have (on average 1.271039603960396) internal successors, (1027), 834 states have internal predecessors, (1027), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) [2022-11-03 02:09:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 02:09:13,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:13,959 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:13,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:09:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1169685311, now seen corresponding path program 1 times [2022-11-03 02:09:13,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:13,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029212787] [2022-11-03 02:09:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:09:14,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029212787] [2022-11-03 02:09:14,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029212787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:14,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:14,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645862156] [2022-11-03 02:09:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:14,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:14,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:14,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:14,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:14,880 INFO L87 Difference]: Start difference. First operand has 1426 states, 808 states have (on average 1.271039603960396) internal successors, (1027), 834 states have internal predecessors, (1027), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:19,764 INFO L93 Difference]: Finished difference Result 4095 states and 5949 transitions. [2022-11-03 02:09:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:19,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 130 [2022-11-03 02:09:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:19,827 INFO L225 Difference]: With dead ends: 4095 [2022-11-03 02:09:19,827 INFO L226 Difference]: Without dead ends: 2676 [2022-11-03 02:09:19,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:19,852 INFO L413 NwaCegarLoop]: 2314 mSDtfsCounter, 1856 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:19,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 4037 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:09:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2676 states. [2022-11-03 02:09:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2676 to 2648. [2022-11-03 02:09:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1511 states have (on average 1.2653871608206486) internal successors, (1912), 1566 states have internal predecessors, (1912), 934 states have call successors, (934), 203 states have call predecessors, (934), 200 states have return successors, (937), 916 states have call predecessors, (937), 930 states have call successors, (937) [2022-11-03 02:09:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3783 transitions. [2022-11-03 02:09:20,251 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3783 transitions. Word has length 130 [2022-11-03 02:09:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:20,252 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 3783 transitions. [2022-11-03 02:09:20,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3783 transitions. [2022-11-03 02:09:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-03 02:09:20,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:20,267 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:20,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:09:20,268 INFO L420 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)] === [2022-11-03 02:09:20,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:20,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1030965118, now seen corresponding path program 1 times [2022-11-03 02:09:20,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:20,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692134763] [2022-11-03 02:09:20,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:20,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:20,786 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:09:20,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692134763] [2022-11-03 02:09:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692134763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:20,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:20,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968227510] [2022-11-03 02:09:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:20,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:20,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:20,795 INFO L87 Difference]: Start difference. First operand 2648 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:26,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:26,114 INFO L93 Difference]: Finished difference Result 7768 states and 11078 transitions. [2022-11-03 02:09:26,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:26,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 131 [2022-11-03 02:09:26,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:26,155 INFO L225 Difference]: With dead ends: 7768 [2022-11-03 02:09:26,155 INFO L226 Difference]: Without dead ends: 5143 [2022-11-03 02:09:26,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,168 INFO L413 NwaCegarLoop]: 2209 mSDtfsCounter, 1902 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1902 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:26,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1902 Valid, 3898 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:09:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2022-11-03 02:09:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 5139. [2022-11-03 02:09:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5139 states, 2942 states have (on average 1.2607070020394289) internal successors, (3709), 3040 states have internal predecessors, (3709), 1797 states have call successors, (1797), 402 states have call predecessors, (1797), 397 states have return successors, (1807), 1768 states have call predecessors, (1807), 1793 states have call successors, (1807) [2022-11-03 02:09:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5139 states to 5139 states and 7313 transitions. [2022-11-03 02:09:26,473 INFO L78 Accepts]: Start accepts. Automaton has 5139 states and 7313 transitions. Word has length 131 [2022-11-03 02:09:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:26,473 INFO L495 AbstractCegarLoop]: Abstraction has 5139 states and 7313 transitions. [2022-11-03 02:09:26,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:26,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5139 states and 7313 transitions. [2022-11-03 02:09:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-03 02:09:26,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:26,481 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:26,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:09:26,481 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:09:26,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 188756857, now seen corresponding path program 1 times [2022-11-03 02:09:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:26,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834400645] [2022-11-03 02:09:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:26,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2022-11-03 02:09:26,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834400645] [2022-11-03 02:09:26,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834400645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:26,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:26,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48313495] [2022-11-03 02:09:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:26,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:26,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:26,845 INFO L87 Difference]: Start difference. First operand 5139 states and 7313 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:31,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:32,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:32,526 INFO L93 Difference]: Finished difference Result 14867 states and 21069 transitions. [2022-11-03 02:09:32,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:32,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-11-03 02:09:32,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:32,612 INFO L225 Difference]: With dead ends: 14867 [2022-11-03 02:09:32,613 INFO L226 Difference]: Without dead ends: 9751 [2022-11-03 02:09:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:32,646 INFO L413 NwaCegarLoop]: 2193 mSDtfsCounter, 1784 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 3900 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:32,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1784 Valid, 3900 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-03 02:09:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2022-11-03 02:09:33,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9719. [2022-11-03 02:09:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9719 states, 5570 states have (on average 1.2533213644524237) internal successors, (6981), 5744 states have internal predecessors, (6981), 3359 states have call successors, (3359), 796 states have call predecessors, (3359), 787 states have return successors, (3389), 3296 states have call predecessors, (3389), 3355 states have call successors, (3389) [2022-11-03 02:09:33,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9719 states to 9719 states and 13729 transitions. [2022-11-03 02:09:33,497 INFO L78 Accepts]: Start accepts. Automaton has 9719 states and 13729 transitions. Word has length 135 [2022-11-03 02:09:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:33,498 INFO L495 AbstractCegarLoop]: Abstraction has 9719 states and 13729 transitions. [2022-11-03 02:09:33,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-03 02:09:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 9719 states and 13729 transitions. [2022-11-03 02:09:33,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 02:09:33,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:33,505 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:33,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:09:33,505 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:09:33,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 489054925, now seen corresponding path program 1 times [2022-11-03 02:09:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:33,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642207465] [2022-11-03 02:09:33,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-03 02:09:33,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:33,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642207465] [2022-11-03 02:09:33,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642207465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:33,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:33,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:09:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832565680] [2022-11-03 02:09:33,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:33,905 INFO L87 Difference]: Start difference. First operand 9719 states and 13729 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:09:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:38,669 INFO L93 Difference]: Finished difference Result 17435 states and 24602 transitions. [2022-11-03 02:09:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:38,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 162 [2022-11-03 02:09:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:38,725 INFO L225 Difference]: With dead ends: 17435 [2022-11-03 02:09:38,725 INFO L226 Difference]: Without dead ends: 7739 [2022-11-03 02:09:38,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:09:38,772 INFO L413 NwaCegarLoop]: 2439 mSDtfsCounter, 1258 mSDsluCounter, 1959 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:38,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 4147 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:09:38,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7739 states. [2022-11-03 02:09:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7739 to 7707. [2022-11-03 02:09:39,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 4447 states have (on average 1.257027209354621) internal successors, (5590), 4596 states have internal predecessors, (5590), 2594 states have call successors, (2594), 672 states have call predecessors, (2594), 663 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:09:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 10791 transitions. [2022-11-03 02:09:39,234 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 10791 transitions. Word has length 162 [2022-11-03 02:09:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:39,236 INFO L495 AbstractCegarLoop]: Abstraction has 7707 states and 10791 transitions. [2022-11-03 02:09:39,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:09:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 10791 transitions. [2022-11-03 02:09:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-03 02:09:39,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:39,241 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:39,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:09:39,241 INFO L420 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)] === [2022-11-03 02:09:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash -932236573, now seen corresponding path program 1 times [2022-11-03 02:09:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:39,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18259965] [2022-11-03 02:09:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:39,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2022-11-03 02:09:39,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:39,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18259965] [2022-11-03 02:09:39,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18259965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:39,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:39,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:39,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369722293] [2022-11-03 02:09:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:39,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:39,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:39,861 INFO L87 Difference]: Start difference. First operand 7707 states and 10791 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:09:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:45,313 INFO L93 Difference]: Finished difference Result 7713 states and 10796 transitions. [2022-11-03 02:09:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:09:45,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-11-03 02:09:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:45,358 INFO L225 Difference]: With dead ends: 7713 [2022-11-03 02:09:45,359 INFO L226 Difference]: Without dead ends: 7711 [2022-11-03 02:09:45,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:09:45,365 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 1966 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:45,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 5221 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-03 02:09:45,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7711 states. [2022-11-03 02:09:45,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7711 to 7711. [2022-11-03 02:09:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 4450 states have (on average 1.2568539325842696) internal successors, (5593), 4599 states have internal predecessors, (5593), 2594 states have call successors, (2594), 673 states have call predecessors, (2594), 664 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:09:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 10794 transitions. [2022-11-03 02:09:45,841 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 10794 transitions. Word has length 168 [2022-11-03 02:09:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:45,842 INFO L495 AbstractCegarLoop]: Abstraction has 7711 states and 10794 transitions. [2022-11-03 02:09:45,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:09:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 10794 transitions. [2022-11-03 02:09:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-03 02:09:45,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:45,846 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:45,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:09:45,846 INFO L420 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)] === [2022-11-03 02:09:45,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1058915077, now seen corresponding path program 1 times [2022-11-03 02:09:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:45,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336050426] [2022-11-03 02:09:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:45,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-03 02:09:46,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:46,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336050426] [2022-11-03 02:09:46,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336050426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:46,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:46,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:46,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56004702] [2022-11-03 02:09:46,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:46,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:46,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:46,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:46,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:46,394 INFO L87 Difference]: Start difference. First operand 7711 states and 10794 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:09:52,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:52,545 INFO L93 Difference]: Finished difference Result 7717 states and 10799 transitions. [2022-11-03 02:09:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:09:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 179 [2022-11-03 02:09:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:52,583 INFO L225 Difference]: With dead ends: 7717 [2022-11-03 02:09:52,583 INFO L226 Difference]: Without dead ends: 7715 [2022-11-03 02:09:52,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:09:52,587 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1960 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:52,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:09:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7715 states. [2022-11-03 02:09:53,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7715 to 7715. [2022-11-03 02:09:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7715 states, 4453 states have (on average 1.2566808892881203) internal successors, (5596), 4602 states have internal predecessors, (5596), 2594 states have call successors, (2594), 674 states have call predecessors, (2594), 665 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:09:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7715 states to 7715 states and 10797 transitions. [2022-11-03 02:09:53,148 INFO L78 Accepts]: Start accepts. Automaton has 7715 states and 10797 transitions. Word has length 179 [2022-11-03 02:09:53,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:53,149 INFO L495 AbstractCegarLoop]: Abstraction has 7715 states and 10797 transitions. [2022-11-03 02:09:53,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:09:53,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7715 states and 10797 transitions. [2022-11-03 02:09:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-03 02:09:53,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:53,153 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:09:53,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:09:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1126112672, now seen corresponding path program 1 times [2022-11-03 02:09:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:53,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595709109] [2022-11-03 02:09:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2022-11-03 02:09:53,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:53,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595709109] [2022-11-03 02:09:53,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595709109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:53,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:09:53,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:09:53,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014321429] [2022-11-03 02:09:53,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:53,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:09:53,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:53,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:09:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:53,702 INFO L87 Difference]: Start difference. First operand 7715 states and 10797 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:09:57,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:00,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:00,798 INFO L93 Difference]: Finished difference Result 7721 states and 10802 transitions. [2022-11-03 02:10:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:00,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 184 [2022-11-03 02:10:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:00,835 INFO L225 Difference]: With dead ends: 7721 [2022-11-03 02:10:00,835 INFO L226 Difference]: Without dead ends: 7719 [2022-11-03 02:10:00,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:00,840 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1960 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:00,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:10:00,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2022-11-03 02:10:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7719. [2022-11-03 02:10:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7719 states, 4456 states have (on average 1.256508078994614) internal successors, (5599), 4605 states have internal predecessors, (5599), 2594 states have call successors, (2594), 675 states have call predecessors, (2594), 666 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:10:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7719 states to 7719 states and 10800 transitions. [2022-11-03 02:10:01,318 INFO L78 Accepts]: Start accepts. Automaton has 7719 states and 10800 transitions. Word has length 184 [2022-11-03 02:10:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:01,319 INFO L495 AbstractCegarLoop]: Abstraction has 7719 states and 10800 transitions. [2022-11-03 02:10:01,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:10:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 7719 states and 10800 transitions. [2022-11-03 02:10:01,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 02:10:01,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:01,323 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:01,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:10:01,324 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:01,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:01,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1734478114, now seen corresponding path program 1 times [2022-11-03 02:10:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:01,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22031954] [2022-11-03 02:10:01,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:01,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-11-03 02:10:01,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:01,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22031954] [2022-11-03 02:10:01,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22031954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:01,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:01,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432203370] [2022-11-03 02:10:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:01,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:01,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:01,813 INFO L87 Difference]: Start difference. First operand 7719 states and 10800 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:10:08,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:08,411 INFO L93 Difference]: Finished difference Result 7725 states and 10805 transitions. [2022-11-03 02:10:08,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:08,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 183 [2022-11-03 02:10:08,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:08,454 INFO L225 Difference]: With dead ends: 7725 [2022-11-03 02:10:08,454 INFO L226 Difference]: Without dead ends: 7723 [2022-11-03 02:10:08,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:08,461 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:08,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1970 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-03 02:10:08,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7723 states. [2022-11-03 02:10:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7723 to 7723. [2022-11-03 02:10:08,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7723 states, 4459 states have (on average 1.2563355012334605) internal successors, (5602), 4608 states have internal predecessors, (5602), 2594 states have call successors, (2594), 676 states have call predecessors, (2594), 667 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:10:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 10803 transitions. [2022-11-03 02:10:09,025 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 10803 transitions. Word has length 183 [2022-11-03 02:10:09,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:09,026 INFO L495 AbstractCegarLoop]: Abstraction has 7723 states and 10803 transitions. [2022-11-03 02:10:09,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:10:09,027 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 10803 transitions. [2022-11-03 02:10:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 02:10:09,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:09,035 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:09,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:10:09,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:09,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:09,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1246581027, now seen corresponding path program 1 times [2022-11-03 02:10:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:09,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329738159] [2022-11-03 02:10:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-11-03 02:10:09,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:09,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329738159] [2022-11-03 02:10:09,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329738159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:09,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:09,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:09,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666247750] [2022-11-03 02:10:09,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:09,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:09,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:09,669 INFO L87 Difference]: Start difference. First operand 7723 states and 10803 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:10:15,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:15,593 INFO L93 Difference]: Finished difference Result 7729 states and 10808 transitions. [2022-11-03 02:10:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:15,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 188 [2022-11-03 02:10:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:15,629 INFO L225 Difference]: With dead ends: 7729 [2022-11-03 02:10:15,629 INFO L226 Difference]: Without dead ends: 7727 [2022-11-03 02:10:15,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:15,636 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:15,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:10:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2022-11-03 02:10:16,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 7727. [2022-11-03 02:10:16,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 4462 states have (on average 1.2561631555356343) internal successors, (5605), 4611 states have internal predecessors, (5605), 2594 states have call successors, (2594), 677 states have call predecessors, (2594), 668 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:10:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 10806 transitions. [2022-11-03 02:10:16,424 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 10806 transitions. Word has length 188 [2022-11-03 02:10:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:16,425 INFO L495 AbstractCegarLoop]: Abstraction has 7727 states and 10806 transitions. [2022-11-03 02:10:16,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:10:16,425 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 10806 transitions. [2022-11-03 02:10:16,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 02:10:16,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:16,431 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:16,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:10:16,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:16,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:16,432 INFO L85 PathProgramCache]: Analyzing trace with hash 596266851, now seen corresponding path program 1 times [2022-11-03 02:10:16,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:16,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546681868] [2022-11-03 02:10:16,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:16,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:16,989 INFO L134 CoverageAnalysis]: Checked inductivity of 584 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2022-11-03 02:10:16,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:16,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546681868] [2022-11-03 02:10:16,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546681868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:16,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:16,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519807551] [2022-11-03 02:10:16,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:16,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:16,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:16,998 INFO L87 Difference]: Start difference. First operand 7727 states and 10806 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:10:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:21,809 INFO L93 Difference]: Finished difference Result 7733 states and 10811 transitions. [2022-11-03 02:10:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:21,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 198 [2022-11-03 02:10:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:21,846 INFO L225 Difference]: With dead ends: 7733 [2022-11-03 02:10:21,846 INFO L226 Difference]: Without dead ends: 7731 [2022-11-03 02:10:21,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:21,854 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1960 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:21,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-03 02:10:21,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7731 states. [2022-11-03 02:10:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7731 to 7731. [2022-11-03 02:10:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7731 states, 4465 states have (on average 1.2559910414333706) internal successors, (5608), 4614 states have internal predecessors, (5608), 2594 states have call successors, (2594), 678 states have call predecessors, (2594), 669 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:10:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 10809 transitions. [2022-11-03 02:10:22,498 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 10809 transitions. Word has length 198 [2022-11-03 02:10:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:22,499 INFO L495 AbstractCegarLoop]: Abstraction has 7731 states and 10809 transitions. [2022-11-03 02:10:22,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-03 02:10:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 10809 transitions. [2022-11-03 02:10:22,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-03 02:10:22,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:22,505 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:10:22,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:22,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:22,506 INFO L85 PathProgramCache]: Analyzing trace with hash -762327997, now seen corresponding path program 1 times [2022-11-03 02:10:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:22,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868786582] [2022-11-03 02:10:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:22,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-03 02:10:22,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:22,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868786582] [2022-11-03 02:10:22,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868786582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:22,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:22,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:22,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391133681] [2022-11-03 02:10:22,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:22,990 INFO L87 Difference]: Start difference. First operand 7731 states and 10809 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:10:28,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:28,448 INFO L93 Difference]: Finished difference Result 7737 states and 10814 transitions. [2022-11-03 02:10:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:28,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 198 [2022-11-03 02:10:28,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:28,479 INFO L225 Difference]: With dead ends: 7737 [2022-11-03 02:10:28,479 INFO L226 Difference]: Without dead ends: 7735 [2022-11-03 02:10:28,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:28,484 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:28,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:10:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2022-11-03 02:10:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 7735. [2022-11-03 02:10:29,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 4468 states have (on average 1.2558191584601612) internal successors, (5611), 4617 states have internal predecessors, (5611), 2594 states have call successors, (2594), 679 states have call predecessors, (2594), 670 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-11-03 02:10:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 10812 transitions. [2022-11-03 02:10:29,141 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 10812 transitions. Word has length 198 [2022-11-03 02:10:29,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:29,142 INFO L495 AbstractCegarLoop]: Abstraction has 7735 states and 10812 transitions. [2022-11-03 02:10:29,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:10:29,142 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 10812 transitions. [2022-11-03 02:10:29,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-03 02:10:29,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:29,148 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 8, 7, 7, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:29,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:10:29,149 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:29,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2071145853, now seen corresponding path program 1 times [2022-11-03 02:10:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:29,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320953965] [2022-11-03 02:10:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:29,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-11-03 02:10:29,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:29,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320953965] [2022-11-03 02:10:29,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320953965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:29,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:29,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633665150] [2022-11-03 02:10:29,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:29,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:29,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:29,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:29,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:29,779 INFO L87 Difference]: Start difference. First operand 7735 states and 10812 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:10:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:35,807 INFO L93 Difference]: Finished difference Result 8726 states and 11990 transitions. [2022-11-03 02:10:35,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 208 [2022-11-03 02:10:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:35,842 INFO L225 Difference]: With dead ends: 8726 [2022-11-03 02:10:35,842 INFO L226 Difference]: Without dead ends: 8724 [2022-11-03 02:10:35,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:35,849 INFO L413 NwaCegarLoop]: 1956 mSDtfsCounter, 1724 mSDsluCounter, 5059 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:35,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 6315 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:10:35,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2022-11-03 02:10:36,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 8724. [2022-11-03 02:10:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8724 states, 5016 states have (on average 1.2509968102073366) internal successors, (6275), 5177 states have internal predecessors, (6275), 2850 states have call successors, (2850), 864 states have call predecessors, (2850), 855 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:10:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8724 states to 8724 states and 11988 transitions. [2022-11-03 02:10:36,654 INFO L78 Accepts]: Start accepts. Automaton has 8724 states and 11988 transitions. Word has length 208 [2022-11-03 02:10:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:36,655 INFO L495 AbstractCegarLoop]: Abstraction has 8724 states and 11988 transitions. [2022-11-03 02:10:36,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:10:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 8724 states and 11988 transitions. [2022-11-03 02:10:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-03 02:10:36,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:36,666 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 9, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:36,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:10:36,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:36,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash 289181539, now seen corresponding path program 1 times [2022-11-03 02:10:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:36,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525003930] [2022-11-03 02:10:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2022-11-03 02:10:37,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525003930] [2022-11-03 02:10:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525003930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:37,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625771412] [2022-11-03 02:10:37,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:37,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:37,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:37,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:37,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:37,110 INFO L87 Difference]: Start difference. First operand 8724 states and 11988 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:10:41,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:42,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:10:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:43,700 INFO L93 Difference]: Finished difference Result 8730 states and 11993 transitions. [2022-11-03 02:10:43,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:43,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 208 [2022-11-03 02:10:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:43,728 INFO L225 Difference]: With dead ends: 8730 [2022-11-03 02:10:43,729 INFO L226 Difference]: Without dead ends: 8728 [2022-11-03 02:10:43,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:43,733 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:43,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:10:43,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2022-11-03 02:10:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 8728. [2022-11-03 02:10:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8728 states, 5019 states have (on average 1.2508467822275353) internal successors, (6278), 5180 states have internal predecessors, (6278), 2850 states have call successors, (2850), 865 states have call predecessors, (2850), 856 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:10:44,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8728 states to 8728 states and 11991 transitions. [2022-11-03 02:10:44,450 INFO L78 Accepts]: Start accepts. Automaton has 8728 states and 11991 transitions. Word has length 208 [2022-11-03 02:10:44,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:44,451 INFO L495 AbstractCegarLoop]: Abstraction has 8728 states and 11991 transitions. [2022-11-03 02:10:44,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-03 02:10:44,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8728 states and 11991 transitions. [2022-11-03 02:10:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-03 02:10:44,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:44,457 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 10, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:44,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:10:44,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash -778894782, now seen corresponding path program 1 times [2022-11-03 02:10:44,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:44,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830651184] [2022-11-03 02:10:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:44,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:44,896 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2022-11-03 02:10:44,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830651184] [2022-11-03 02:10:44,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830651184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:44,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:44,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603583406] [2022-11-03 02:10:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:44,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:44,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:44,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:44,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:44,899 INFO L87 Difference]: Start difference. First operand 8728 states and 11991 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:10:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:50,778 INFO L93 Difference]: Finished difference Result 8734 states and 11996 transitions. [2022-11-03 02:10:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 213 [2022-11-03 02:10:50,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:50,798 INFO L225 Difference]: With dead ends: 8734 [2022-11-03 02:10:50,798 INFO L226 Difference]: Without dead ends: 8732 [2022-11-03 02:10:50,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:50,801 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:50,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:10:50,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8732 states. [2022-11-03 02:10:51,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8732 to 8732. [2022-11-03 02:10:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8732 states, 5022 states have (on average 1.2506969334926323) internal successors, (6281), 5183 states have internal predecessors, (6281), 2850 states have call successors, (2850), 866 states have call predecessors, (2850), 857 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:10:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8732 states to 8732 states and 11994 transitions. [2022-11-03 02:10:51,453 INFO L78 Accepts]: Start accepts. Automaton has 8732 states and 11994 transitions. Word has length 213 [2022-11-03 02:10:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:51,453 INFO L495 AbstractCegarLoop]: Abstraction has 8732 states and 11994 transitions. [2022-11-03 02:10:51,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:10:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 8732 states and 11994 transitions. [2022-11-03 02:10:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-03 02:10:51,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:51,458 INFO L195 NwaCegarLoop]: trace histogram [14, 11, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:10:51,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1639189566, now seen corresponding path program 1 times [2022-11-03 02:10:51,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349414039] [2022-11-03 02:10:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:51,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 734 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2022-11-03 02:10:52,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:52,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349414039] [2022-11-03 02:10:52,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349414039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:52,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:52,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58369791] [2022-11-03 02:10:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:52,045 INFO L87 Difference]: Start difference. First operand 8732 states and 11994 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:10:58,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:10:58,577 INFO L93 Difference]: Finished difference Result 8738 states and 11999 transitions. [2022-11-03 02:10:58,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:10:58,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 223 [2022-11-03 02:10:58,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:10:58,601 INFO L225 Difference]: With dead ends: 8738 [2022-11-03 02:10:58,601 INFO L226 Difference]: Without dead ends: 8736 [2022-11-03 02:10:58,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:10:58,607 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1960 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:10:58,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-03 02:10:58,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8736 states. [2022-11-03 02:10:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8736 to 8736. [2022-11-03 02:10:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 5025 states have (on average 1.250547263681592) internal successors, (6284), 5186 states have internal predecessors, (6284), 2850 states have call successors, (2850), 867 states have call predecessors, (2850), 858 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:10:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 11997 transitions. [2022-11-03 02:10:59,314 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 11997 transitions. Word has length 223 [2022-11-03 02:10:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:10:59,314 INFO L495 AbstractCegarLoop]: Abstraction has 8736 states and 11997 transitions. [2022-11-03 02:10:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-11-03 02:10:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 11997 transitions. [2022-11-03 02:10:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-03 02:10:59,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:10:59,321 INFO L195 NwaCegarLoop]: trace histogram [14, 12, 11, 11, 11, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:10:59,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:10:59,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:10:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:10:59,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1157241506, now seen corresponding path program 1 times [2022-11-03 02:10:59,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:10:59,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243363693] [2022-11-03 02:10:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:10:59,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:10:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:10:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 750 trivial. 0 not checked. [2022-11-03 02:10:59,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:10:59,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243363693] [2022-11-03 02:10:59,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243363693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:10:59,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:10:59,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:10:59,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761434229] [2022-11-03 02:10:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:10:59,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:10:59,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:10:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:10:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:10:59,833 INFO L87 Difference]: Start difference. First operand 8736 states and 11997 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:11:03,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:08,318 INFO L93 Difference]: Finished difference Result 8742 states and 12002 transitions. [2022-11-03 02:11:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:11:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 223 [2022-11-03 02:11:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:08,370 INFO L225 Difference]: With dead ends: 8742 [2022-11-03 02:11:08,371 INFO L226 Difference]: Without dead ends: 8738 [2022-11-03 02:11:08,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:11:08,377 INFO L413 NwaCegarLoop]: 1748 mSDtfsCounter, 1961 mSDsluCounter, 4012 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:08,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 5224 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-03 02:11:08,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8738 states. [2022-11-03 02:11:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8738 to 8738. [2022-11-03 02:11:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 5027 states have (on average 1.2502486572508453) internal successors, (6285), 5187 states have internal predecessors, (6285), 2850 states have call successors, (2850), 868 states have call predecessors, (2850), 858 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:11:09,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 11998 transitions. [2022-11-03 02:11:09,134 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 11998 transitions. Word has length 223 [2022-11-03 02:11:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:09,134 INFO L495 AbstractCegarLoop]: Abstraction has 8738 states and 11998 transitions. [2022-11-03 02:11:09,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-03 02:11:09,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 11998 transitions. [2022-11-03 02:11:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-03 02:11:09,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:09,140 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:09,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:11:09,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -162912298, now seen corresponding path program 1 times [2022-11-03 02:11:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:09,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185809626] [2022-11-03 02:11:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:09,461 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-11-03 02:11:09,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:09,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185809626] [2022-11-03 02:11:09,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185809626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:09,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:09,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:11:09,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115104978] [2022-11-03 02:11:09,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:09,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:09,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:09,464 INFO L87 Difference]: Start difference. First operand 8738 states and 11998 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:11:14,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:15,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:15,767 INFO L93 Difference]: Finished difference Result 17398 states and 23915 transitions. [2022-11-03 02:11:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:15,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 224 [2022-11-03 02:11:15,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:15,792 INFO L225 Difference]: With dead ends: 17398 [2022-11-03 02:11:15,793 INFO L226 Difference]: Without dead ends: 8810 [2022-11-03 02:11:15,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:11:15,821 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 12 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:15,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3484 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:11:15,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8810 states. [2022-11-03 02:11:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8810 to 8746. [2022-11-03 02:11:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8746 states, 5035 states have (on average 1.2498510427010923) internal successors, (6293), 5195 states have internal predecessors, (6293), 2850 states have call successors, (2850), 868 states have call predecessors, (2850), 858 states have return successors, (2863), 2790 states have call predecessors, (2863), 2846 states have call successors, (2863) [2022-11-03 02:11:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8746 states to 8746 states and 12006 transitions. [2022-11-03 02:11:16,497 INFO L78 Accepts]: Start accepts. Automaton has 8746 states and 12006 transitions. Word has length 224 [2022-11-03 02:11:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:16,498 INFO L495 AbstractCegarLoop]: Abstraction has 8746 states and 12006 transitions. [2022-11-03 02:11:16,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-03 02:11:16,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8746 states and 12006 transitions. [2022-11-03 02:11:16,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-03 02:11:16,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:16,504 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 12, 12, 11, 11, 11, 11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:16,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:11:16,505 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:16,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:16,505 INFO L85 PathProgramCache]: Analyzing trace with hash 244345856, now seen corresponding path program 1 times [2022-11-03 02:11:16,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:16,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870367329] [2022-11-03 02:11:16,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:16,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2022-11-03 02:11:16,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870367329] [2022-11-03 02:11:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870367329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:16,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:11:16,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:11:16,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345028712] [2022-11-03 02:11:16,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:16,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:11:16,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:16,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:11:16,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:16,972 INFO L87 Difference]: Start difference. First operand 8746 states and 12006 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:11:21,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:11:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:24,542 INFO L93 Difference]: Finished difference Result 8746 states and 12006 transitions. [2022-11-03 02:11:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:11:24,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 234 [2022-11-03 02:11:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:24,570 INFO L225 Difference]: With dead ends: 8746 [2022-11-03 02:11:24,570 INFO L226 Difference]: Without dead ends: 8594 [2022-11-03 02:11:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:11:24,576 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 1956 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 5221 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:24,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 5221 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-03 02:11:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8594 states. [2022-11-03 02:11:25,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8594 to 8594. [2022-11-03 02:11:25,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8594 states, 4972 states have (on average 1.247385358004827) internal successors, (6202), 5104 states have internal predecessors, (6202), 2782 states have call successors, (2782), 842 states have call predecessors, (2782), 838 states have return successors, (2799), 2751 states have call predecessors, (2799), 2782 states have call successors, (2799) [2022-11-03 02:11:25,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8594 states to 8594 states and 11783 transitions. [2022-11-03 02:11:25,399 INFO L78 Accepts]: Start accepts. Automaton has 8594 states and 11783 transitions. Word has length 234 [2022-11-03 02:11:25,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:25,399 INFO L495 AbstractCegarLoop]: Abstraction has 8594 states and 11783 transitions. [2022-11-03 02:11:25,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-03 02:11:25,399 INFO L276 IsEmpty]: Start isEmpty. Operand 8594 states and 11783 transitions. [2022-11-03 02:11:25,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-03 02:11:25,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:25,405 INFO L195 NwaCegarLoop]: trace histogram [16, 12, 12, 12, 12, 12, 12, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:25,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:11:25,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 932080605, now seen corresponding path program 1 times [2022-11-03 02:11:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069793402] [2022-11-03 02:11:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2022-11-03 02:11:25,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:25,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069793402] [2022-11-03 02:11:25,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069793402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:25,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974591511] [2022-11-03 02:11:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:25,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:25,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:25,747 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:25,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:11:26,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:26,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:11:26,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:27,063 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2022-11-03 02:11:27,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:11:27,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974591511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:11:27,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:11:27,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:11:27,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408213684] [2022-11-03 02:11:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:11:27,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:11:27,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:11:27,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:11:27,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:27,067 INFO L87 Difference]: Start difference. First operand 8594 states and 11783 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:11:32,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:11:32,785 INFO L93 Difference]: Finished difference Result 19881 states and 27241 transitions. [2022-11-03 02:11:32,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:11:32,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 227 [2022-11-03 02:11:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:11:32,822 INFO L225 Difference]: With dead ends: 19881 [2022-11-03 02:11:32,823 INFO L226 Difference]: Without dead ends: 11437 [2022-11-03 02:11:32,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:11:32,847 INFO L413 NwaCegarLoop]: 2564 mSDtfsCounter, 1192 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 4220 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:11:32,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 4220 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:11:32,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11437 states. [2022-11-03 02:11:33,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11437 to 11429. [2022-11-03 02:11:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11429 states, 6625 states have (on average 1.248301886792453) internal successors, (8270), 6801 states have internal predecessors, (8270), 3659 states have call successors, (3659), 1147 states have call predecessors, (3659), 1143 states have return successors, (3676), 3622 states have call predecessors, (3676), 3659 states have call successors, (3676) [2022-11-03 02:11:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11429 states to 11429 states and 15605 transitions. [2022-11-03 02:11:33,744 INFO L78 Accepts]: Start accepts. Automaton has 11429 states and 15605 transitions. Word has length 227 [2022-11-03 02:11:33,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:11:33,745 INFO L495 AbstractCegarLoop]: Abstraction has 11429 states and 15605 transitions. [2022-11-03 02:11:33,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-03 02:11:33,746 INFO L276 IsEmpty]: Start isEmpty. Operand 11429 states and 15605 transitions. [2022-11-03 02:11:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-11-03 02:11:33,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:11:33,751 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 12, 12, 12, 12, 12, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:11:33,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:11:33,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:33,979 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:11:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:11:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash 20347864, now seen corresponding path program 1 times [2022-11-03 02:11:33,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:11:33,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638907295] [2022-11-03 02:11:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:11:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:34,454 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-03 02:11:34,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:11:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638907295] [2022-11-03 02:11:34,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638907295] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:11:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101370706] [2022-11-03 02:11:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:11:34,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:11:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:11:34,476 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:11:34,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1be2d42b-d67a-4208-89db-40dd5a676ae3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:11:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:11:35,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 3724 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:11:35,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:11:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 237 proven. 1 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-03 02:11:35,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:11:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 812 trivial. 0 not checked. [2022-11-03 02:11:36,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101370706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:11:36,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1439152255] [2022-11-03 02:11:36,061 INFO L159 IcfgInterpreter]: Started Sifa with 140 locations of interest [2022-11-03 02:11:36,062 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:11:36,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:11:36,072 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:11:36,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:11:42,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:42,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:42,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-03 02:11:42,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 02:11:42,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 02:11:44,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:44,621 INFO L244 Elim1Store]: Index analysis took 198 ms [2022-11-03 02:11:45,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 76 select indices, 76 select index equivalence classes, 2926 disjoint index pairs (out of 2850 index pairs), introduced 76 new quantified variables, introduced 0 case distinctions, treesize of input 1679 treesize of output 1594 [2022-11-03 02:11:47,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:11:47,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 02:11:47,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2022-11-03 02:14:58,156 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 362 for LOIs [2022-11-03 02:15:02,082 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 1812 for LOIs [2022-11-03 02:15:04,570 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assume with input of size 1617 for LOIs [2022-11-03 02:15:06,353 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:16:11,040 WARN L234 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 2882 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:17:24,392 WARN L234 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 1812 DAG size of output: 1624 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:18:36,932 WARN L234 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 1820 DAG size of output: 1633 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:07,641 WARN L234 SmtUtils]: Spent 18.78s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:27,345 WARN L234 SmtUtils]: Spent 18.95s on a formula simplification that was a NOOP. DAG size: 1613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:19:47,218 WARN L234 SmtUtils]: Spent 19.08s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:07,261 WARN L234 SmtUtils]: Spent 19.19s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:27,599 WARN L234 SmtUtils]: Spent 19.38s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:20:48,337 WARN L234 SmtUtils]: Spent 19.79s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:09,017 WARN L234 SmtUtils]: Spent 19.70s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:29,873 WARN L234 SmtUtils]: Spent 19.80s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:21:51,969 WARN L234 SmtUtils]: Spent 21.00s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:22:14,953 WARN L234 SmtUtils]: Spent 21.63s on a formula simplification that was a NOOP. DAG size: 1617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)