./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS --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 8ce45e17f6cb4c017891df1db140fbcb2581e20f4065ad4296f4e21077bc6fbb --- 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-8393723 [2022-11-19 08:17:15,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:17:15,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:17:15,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:17:15,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:17:15,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:17:15,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:17:15,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:17:15,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:17:15,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:17:15,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:17:15,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:17:15,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:17:15,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:17:15,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:17:15,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:17:15,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:17:15,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:17:15,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:17:15,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:17:15,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:17:15,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:17:15,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:17:15,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:17:15,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:17:15,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:17:15,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:17:15,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:17:15,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:17:15,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:17:15,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:17:15,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:17:15,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:17:15,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:17:15,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:17:15,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:17:15,429 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:17:15,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:17:15,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:17:15,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:17:15,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:17:15,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:17:15,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:17:15,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:17:15,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:17:15,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:17:15,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:17:15,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:17:15,475 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:17:15,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:17:15,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:17:15,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:17:15,476 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:17:15,477 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:17:15,477 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:17:15,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:17:15,477 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:17:15,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:17:15,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:17:15,478 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:17:15,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:17:15,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:17:15,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:17:15,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:17:15,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:17:15,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:17:15,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:17:15,481 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:17:15,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:17:15,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:17:15,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:17:15,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:15,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:17:15,482 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:17:15,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:17:15,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:17:15,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:17:15,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:17:15,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:17:15,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:17:15,483 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ce45e17f6cb4c017891df1db140fbcb2581e20f4065ad4296f4e21077bc6fbb [2022-11-19 08:17:15,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:17:15,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:17:15,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:17:15,846 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:17:15,847 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:17:15,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2022-11-19 08:17:15,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/data/4ec7276b8/0126bbc201b64c58ad9648951f4f16b6/FLAGab2108216 [2022-11-19 08:17:16,880 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:17:16,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2022-11-19 08:17:16,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/data/4ec7276b8/0126bbc201b64c58ad9648951f4f16b6/FLAGab2108216 [2022-11-19 08:17:17,262 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/data/4ec7276b8/0126bbc201b64c58ad9648951f4f16b6 [2022-11-19 08:17:17,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:17:17,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:17:17,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:17,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:17:17,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:17:17,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:17" (1/1) ... [2022-11-19 08:17:17,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2bb519 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:17, skipping insertion in model container [2022-11-19 08:17:17,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:17:17" (1/1) ... [2022-11-19 08:17:17,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:17:17,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:17:20,397 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389426,389439] [2022-11-19 08:17:20,442 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389592,389605] [2022-11-19 08:17:20,443 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389756,389769] [2022-11-19 08:17:20,443 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389921,389934] [2022-11-19 08:17:20,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:20,551 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:17:20,962 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389426,389439] [2022-11-19 08:17:20,963 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389592,389605] [2022-11-19 08:17:20,963 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389756,389769] [2022-11-19 08:17:20,963 WARN L234 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_15cd20af-dfc7-4040-bbe1-9baac9c69923/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i[389921,389934] [2022-11-19 08:17:20,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:17:21,443 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:17:21,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21 WrapperNode [2022-11-19 08:17:21,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:17:21,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:21,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:17:21,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:17:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:21,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:21,840 INFO L138 Inliner]: procedures = 398, calls = 3714, calls flagged for inlining = 224, calls inlined = 212, statements flattened = 6751 [2022-11-19 08:17:21,841 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:17:21,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:17:21,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:17:21,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:17:21,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:21,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:21,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:21,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:17:22,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:17:22,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:17:22,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:17:22,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (1/1) ... [2022-11-19 08:17:22,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:17:22,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:17:22,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:17:22,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15cd20af-dfc7-4040-bbe1-9baac9c69923/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:17:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_phy_mutex_of_usbnet [2022-11-19 08:17:22,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_phy_mutex_of_usbnet [2022-11-19 08:17:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure asix_write_medium_mode [2022-11-19 08:17:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_write_medium_mode [2022-11-19 08:17:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure mii_check_media [2022-11-19 08:17:22,462 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_check_media [2022-11-19 08:17:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 08:17:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 08:17:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-11-19 08:17:22,463 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-11-19 08:17:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_link [2022-11-19 08:17:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_link [2022-11-19 08:17:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 08:17:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 08:17:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure asix_write_rx_ctl [2022-11-19 08:17:22,464 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_write_rx_ctl [2022-11-19 08:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_stop [2022-11-19 08:17:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_stop [2022-11-19 08:17:22,465 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_set_settings [2022-11-19 08:17:22,465 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_set_settings [2022-11-19 08:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure ax88178_reset [2022-11-19 08:17:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88178_reset [2022-11-19 08:17:22,466 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-19 08:17:22,466 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-19 08:17:22,467 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_settings [2022-11-19 08:17:22,467 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_settings [2022-11-19 08:17:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure asix_mdio_write [2022-11-19 08:17:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_mdio_write [2022-11-19 08:17:22,468 INFO L130 BoogieDeclarations]: Found specification of procedure asix_status [2022-11-19 08:17:22,468 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_status [2022-11-19 08:17:22,469 INFO L130 BoogieDeclarations]: Found specification of procedure asix_read_rx_ctl [2022-11-19 08:17:22,469 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_read_rx_ctl [2022-11-19 08:17:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2022-11-19 08:17:22,470 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2022-11-19 08:17:22,470 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-19 08:17:22,470 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-19 08:17:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure asix_set_eeprom [2022-11-19 08:17:22,471 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_set_eeprom [2022-11-19 08:17:22,471 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 08:17:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 08:17:22,472 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 08:17:22,472 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 08:17:22,473 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-19 08:17:22,474 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-19 08:17:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 08:17:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 08:17:22,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 08:17:22,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 08:17:22,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 08:17:22,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 08:17:22,477 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_reset_phy [2022-11-19 08:17:22,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_reset_phy [2022-11-19 08:17:22,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:17:22,478 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_unbind [2022-11-19 08:17:22,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_unbind [2022-11-19 08:17:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure ax88772_link_reset [2022-11-19 08:17:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88772_link_reset [2022-11-19 08:17:22,479 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 08:17:22,479 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 08:17:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_asix_driver_exit_10_2 [2022-11-19 08:17:22,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_asix_driver_exit_10_2 [2022-11-19 08:17:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure asix_set_netdev_dev_addr [2022-11-19 08:17:22,480 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_set_netdev_dev_addr [2022-11-19 08:17:22,480 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_bind [2022-11-19 08:17:22,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_bind [2022-11-19 08:17:22,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 08:17:22,482 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-11-19 08:17:22,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-11-19 08:17:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 08:17:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 08:17:22,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 08:17:22,483 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-11-19 08:17:22,484 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-11-19 08:17:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure ax88178_bind [2022-11-19 08:17:22,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88178_bind [2022-11-19 08:17:22,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:17:22,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 08:17:22,485 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 08:17:22,486 INFO L130 BoogieDeclarations]: Found specification of procedure asix_read_phy_addr [2022-11-19 08:17:22,486 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_read_phy_addr [2022-11-19 08:17:22,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 08:17:22,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 08:17:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_phy_mutex_of_usbnet [2022-11-19 08:17:22,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_phy_mutex_of_usbnet [2022-11-19 08:17:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure asix_rx_fixup_internal [2022-11-19 08:17:22,489 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_rx_fixup_internal [2022-11-19 08:17:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:17:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 08:17:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 08:17:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 08:17:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 08:17:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:17:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2022-11-19 08:17:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2022-11-19 08:17:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_eeprom_len [2022-11-19 08:17:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_eeprom_len [2022-11-19 08:17:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 08:17:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 08:17:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 08:17:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 08:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:17:22,494 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_wol [2022-11-19 08:17:22,494 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_wol [2022-11-19 08:17:22,495 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:17:22,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 08:17:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-11-19 08:17:22,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-11-19 08:17:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure asix_write_cmd_async [2022-11-19 08:17:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_write_cmd_async [2022-11-19 08:17:22,502 INFO L130 BoogieDeclarations]: Found specification of procedure ax88772_unbind [2022-11-19 08:17:22,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88772_unbind [2022-11-19 08:17:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_reset [2022-11-19 08:17:22,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_reset [2022-11-19 08:17:22,504 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172_link_reset [2022-11-19 08:17:22,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172_link_reset [2022-11-19 08:17:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_start_xmit [2022-11-19 08:17:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_start_xmit [2022-11-19 08:17:22,511 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 08:17:22,511 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 08:17:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_drvinfo [2022-11-19 08:17:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_drvinfo [2022-11-19 08:17:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure asix_set_hw_mii [2022-11-19 08:17:22,512 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_set_hw_mii [2022-11-19 08:17:22,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:17:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:17:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-19 08:17:22,513 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-19 08:17:22,513 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_msglevel [2022-11-19 08:17:22,514 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_msglevel [2022-11-19 08:17:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2022-11-19 08:17:22,514 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2022-11-19 08:17:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 08:17:22,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 08:17:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 08:17:22,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 08:17:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_set_settings [2022-11-19 08:17:22,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_set_settings [2022-11-19 08:17:22,515 INFO L130 BoogieDeclarations]: Found specification of procedure ax88772_reset [2022-11-19 08:17:22,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88772_reset [2022-11-19 08:17:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_6_4 [2022-11-19 08:17:22,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_6_4 [2022-11-19 08:17:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_phyid [2022-11-19 08:17:22,516 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_phyid [2022-11-19 08:17:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-11-19 08:17:22,517 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-11-19 08:17:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure bitrev32 [2022-11-19 08:17:22,517 INFO L138 BoogieDeclarations]: Found implementation of procedure bitrev32 [2022-11-19 08:17:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure asix_tx_fixup [2022-11-19 08:17:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_tx_fixup [2022-11-19 08:17:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 08:17:22,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 08:17:22,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 08:17:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 08:17:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ethtool_gset [2022-11-19 08:17:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ethtool_gset [2022-11-19 08:17:22,519 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_set_msglevel [2022-11-19 08:17:22,519 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_set_msglevel [2022-11-19 08:17:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-11-19 08:17:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-11-19 08:17:22,520 INFO L130 BoogieDeclarations]: Found specification of procedure asix_sw_reset [2022-11-19 08:17:22,520 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_sw_reset [2022-11-19 08:17:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 08:17:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172_bind [2022-11-19 08:17:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172_bind [2022-11-19 08:17:22,521 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_phy_addr [2022-11-19 08:17:22,521 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_phy_addr [2022-11-19 08:17:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure asix_write_cmd [2022-11-19 08:17:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_write_cmd [2022-11-19 08:17:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 08:17:22,522 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 08:17:22,522 INFO L130 BoogieDeclarations]: Found specification of procedure asix_read_medium_status [2022-11-19 08:17:22,523 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_read_medium_status [2022-11-19 08:17:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:17:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 08:17:22,523 INFO L130 BoogieDeclarations]: Found specification of procedure asix_read_cmd [2022-11-19 08:17:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_read_cmd [2022-11-19 08:17:22,524 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 08:17:22,524 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 08:17:22,526 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 08:17:22,526 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 08:17:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_nway_reset [2022-11-19 08:17:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_nway_reset [2022-11-19 08:17:22,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 08:17:22,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 08:17:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 08:17:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 08:17:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure asix_write_gpio [2022-11-19 08:17:22,528 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_write_gpio [2022-11-19 08:17:22,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 08:17:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 08:17:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure asix_mdio_read [2022-11-19 08:17:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_mdio_read [2022-11-19 08:17:22,529 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-19 08:17:22,529 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-19 08:17:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure ax88178_link_reset [2022-11-19 08:17:22,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88178_link_reset [2022-11-19 08:17:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure mii_nway_restart [2022-11-19 08:17:22,530 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_nway_restart [2022-11-19 08:17:22,530 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-19 08:17:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-19 08:17:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 08:17:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 08:17:22,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 08:17:22,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 08:17:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:17:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 08:17:22,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 08:17:22,532 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_adjust_link [2022-11-19 08:17:22,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_adjust_link [2022-11-19 08:17:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172_set_multicast [2022-11-19 08:17:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172_set_multicast [2022-11-19 08:17:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_rx_fixup [2022-11-19 08:17:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_rx_fixup [2022-11-19 08:17:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure asix_set_sw_mii [2022-11-19 08:17:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_set_sw_mii [2022-11-19 08:17:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure ax88772_bind [2022-11-19 08:17:22,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88772_bind [2022-11-19 08:17:22,534 INFO L130 BoogieDeclarations]: Found specification of procedure ax88172a_status [2022-11-19 08:17:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ax88172a_status [2022-11-19 08:17:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure asix_rx_fixup_common [2022-11-19 08:17:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_rx_fixup_common [2022-11-19 08:17:22,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 08:17:22,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 08:17:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2022-11-19 08:17:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2022-11-19 08:17:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-19 08:17:22,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-19 08:17:22,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:17:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure asix_get_eeprom [2022-11-19 08:17:22,537 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_get_eeprom [2022-11-19 08:17:22,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 08:17:22,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 08:17:22,543 INFO L130 BoogieDeclarations]: Found specification of procedure asix_set_wol [2022-11-19 08:17:22,543 INFO L138 BoogieDeclarations]: Found implementation of procedure asix_set_wol [2022-11-19 08:17:23,734 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:17:23,738 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:17:24,087 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 08:17:37,669 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 08:17:37,861 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:17:39,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:17:39,609 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:17:39,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:39 BoogieIcfgContainer [2022-11-19 08:17:39,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:17:39,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:17:39,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:17:39,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:17:39,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:17:17" (1/3) ... [2022-11-19 08:17:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e9be9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:39, skipping insertion in model container [2022-11-19 08:17:39,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:17:21" (2/3) ... [2022-11-19 08:17:39,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e9be9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:17:39, skipping insertion in model container [2022-11-19 08:17:39,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:17:39" (3/3) ... [2022-11-19 08:17:39,635 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-net-usb-asix.cil.i [2022-11-19 08:17:39,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:17:39,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 08:17:39,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:17:39,756 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;@7aad36a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:17:39,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 08:17:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 1741 states, 1045 states have (on average 1.321531100478469) internal successors, (1381), 1056 states have internal predecessors, (1381), 586 states have call successors, (586), 109 states have call predecessors, (586), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) [2022-11-19 08:17:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-19 08:17:39,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:39,808 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:39,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:17:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2041693145, now seen corresponding path program 1 times [2022-11-19 08:17:39,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:39,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758765466] [2022-11-19 08:17:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:39,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5703 trivial. 0 not checked. [2022-11-19 08:17:41,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:41,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758765466] [2022-11-19 08:17:41,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758765466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:41,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:41,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:17:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858695538] [2022-11-19 08:17:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:17:41,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:41,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:17:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:17:41,485 INFO L87 Difference]: Start difference. First operand has 1741 states, 1045 states have (on average 1.321531100478469) internal successors, (1381), 1056 states have internal predecessors, (1381), 586 states have call successors, (586), 109 states have call predecessors, (586), 108 states have return successors, (579), 574 states have call predecessors, (579), 579 states have call successors, (579) Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 08:17:45,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:45,055 INFO L93 Difference]: Finished difference Result 4990 states and 7403 transitions. [2022-11-19 08:17:45,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:17:45,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 405 [2022-11-19 08:17:45,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:45,098 INFO L225 Difference]: With dead ends: 4990 [2022-11-19 08:17:45,098 INFO L226 Difference]: Without dead ends: 3315 [2022-11-19 08:17:45,114 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 [2022-11-19 08:17:45,117 INFO L413 NwaCegarLoop]: 2652 mSDtfsCounter, 2347 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2347 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:45,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2347 Valid, 4748 Invalid, 829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 08:17:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3315 states. [2022-11-19 08:17:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3315 to 3311. [2022-11-19 08:17:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3311 states, 2004 states have (on average 1.3208582834331337) internal successors, (2647), 2023 states have internal predecessors, (2647), 1092 states have call successors, (1092), 213 states have call predecessors, (1092), 212 states have return successors, (1088), 1078 states have call predecessors, (1088), 1088 states have call successors, (1088) [2022-11-19 08:17:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4827 transitions. [2022-11-19 08:17:45,391 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4827 transitions. Word has length 405 [2022-11-19 08:17:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:45,392 INFO L495 AbstractCegarLoop]: Abstraction has 3311 states and 4827 transitions. [2022-11-19 08:17:45,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2022-11-19 08:17:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4827 transitions. [2022-11-19 08:17:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-19 08:17:45,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:45,409 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:45,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:17:45,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:17:45,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 744445748, now seen corresponding path program 1 times [2022-11-19 08:17:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:45,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469299830] [2022-11-19 08:17:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:17:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5706 trivial. 0 not checked. [2022-11-19 08:17:47,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:17:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469299830] [2022-11-19 08:17:47,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469299830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:17:47,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:17:47,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 08:17:47,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143868492] [2022-11-19 08:17:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:17:47,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:17:47,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:17:47,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:17:47,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:17:47,701 INFO L87 Difference]: Start difference. First operand 3311 states and 4827 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:17:58,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:17:58,847 INFO L93 Difference]: Finished difference Result 9691 states and 14089 transitions. [2022-11-19 08:17:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:17:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 441 [2022-11-19 08:17:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:17:58,891 INFO L225 Difference]: With dead ends: 9691 [2022-11-19 08:17:58,891 INFO L226 Difference]: Without dead ends: 6457 [2022-11-19 08:17:58,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:17:58,910 INFO L413 NwaCegarLoop]: 3127 mSDtfsCounter, 7924 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 2379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8124 SdHoareTripleChecker+Valid, 7173 SdHoareTripleChecker+Invalid, 5844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2379 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-19 08:17:58,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8124 Valid, 7173 Invalid, 5844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2379 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-19 08:17:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2022-11-19 08:17:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 6417. [2022-11-19 08:17:59,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6417 states, 3899 states have (on average 1.3205950243652218) internal successors, (5149), 3942 states have internal predecessors, (5149), 2085 states have call successors, (2085), 431 states have call predecessors, (2085), 430 states have return successors, (2081), 2051 states have call predecessors, (2081), 2081 states have call successors, (2081) [2022-11-19 08:17:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6417 states to 6417 states and 9315 transitions. [2022-11-19 08:17:59,341 INFO L78 Accepts]: Start accepts. Automaton has 6417 states and 9315 transitions. Word has length 441 [2022-11-19 08:17:59,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:17:59,342 INFO L495 AbstractCegarLoop]: Abstraction has 6417 states and 9315 transitions. [2022-11-19 08:17:59,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:17:59,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6417 states and 9315 transitions. [2022-11-19 08:17:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-19 08:17:59,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:17:59,362 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:17:59,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:17:59,362 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:17:59,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:17:59,372 INFO L85 PathProgramCache]: Analyzing trace with hash -204955833, now seen corresponding path program 1 times [2022-11-19 08:17:59,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:17:59,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757615543] [2022-11-19 08:17:59,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:17:59,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:17:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5706 trivial. 0 not checked. [2022-11-19 08:18:00,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:00,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757615543] [2022-11-19 08:18:00,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757615543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:00,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:00,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137664554] [2022-11-19 08:18:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:00,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:00,197 INFO L87 Difference]: Start difference. First operand 6417 states and 9315 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:03,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:03,568 INFO L93 Difference]: Finished difference Result 17360 states and 25168 transitions. [2022-11-19 08:18:03,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:03,568 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 448 [2022-11-19 08:18:03,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:03,633 INFO L225 Difference]: With dead ends: 17360 [2022-11-19 08:18:03,633 INFO L226 Difference]: Without dead ends: 11020 [2022-11-19 08:18:03,660 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 [2022-11-19 08:18:03,661 INFO L413 NwaCegarLoop]: 2662 mSDtfsCounter, 2293 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 4747 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:03,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 4747 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 08:18:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11020 states. [2022-11-19 08:18:04,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11020 to 11001. [2022-11-19 08:18:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11001 states, 6704 states have (on average 1.318466587112172) internal successors, (8839), 6783 states have internal predecessors, (8839), 3537 states have call successors, (3537), 758 states have call predecessors, (3537), 757 states have return successors, (3533), 3473 states have call predecessors, (3533), 3533 states have call successors, (3533) [2022-11-19 08:18:04,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11001 states to 11001 states and 15909 transitions. [2022-11-19 08:18:04,316 INFO L78 Accepts]: Start accepts. Automaton has 11001 states and 15909 transitions. Word has length 448 [2022-11-19 08:18:04,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:04,317 INFO L495 AbstractCegarLoop]: Abstraction has 11001 states and 15909 transitions. [2022-11-19 08:18:04,318 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11001 states and 15909 transitions. [2022-11-19 08:18:04,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-19 08:18:04,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:04,334 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:04,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:18:04,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:04,337 INFO L85 PathProgramCache]: Analyzing trace with hash -381189223, now seen corresponding path program 1 times [2022-11-19 08:18:04,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:04,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342087443] [2022-11-19 08:18:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:04,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5706 trivial. 0 not checked. [2022-11-19 08:18:05,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:05,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342087443] [2022-11-19 08:18:05,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342087443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:05,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:05,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281074740] [2022-11-19 08:18:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:05,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:05,141 INFO L87 Difference]: Start difference. First operand 11001 states and 15909 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:08,476 INFO L93 Difference]: Finished difference Result 29994 states and 43235 transitions. [2022-11-19 08:18:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:08,477 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 448 [2022-11-19 08:18:08,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:08,601 INFO L225 Difference]: With dead ends: 29994 [2022-11-19 08:18:08,601 INFO L226 Difference]: Without dead ends: 19070 [2022-11-19 08:18:08,657 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 [2022-11-19 08:18:08,658 INFO L413 NwaCegarLoop]: 2778 mSDtfsCounter, 2143 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:08,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 4861 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 08:18:08,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19070 states. [2022-11-19 08:18:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19070 to 19051. [2022-11-19 08:18:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19051 states, 11628 states have (on average 1.3135534915720675) internal successors, (15274), 11744 states have internal predecessors, (15274), 6041 states have call successors, (6041), 1380 states have call predecessors, (6041), 1379 states have return successors, (6037), 5952 states have call predecessors, (6037), 6037 states have call successors, (6037) [2022-11-19 08:18:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19051 states to 19051 states and 27352 transitions. [2022-11-19 08:18:09,848 INFO L78 Accepts]: Start accepts. Automaton has 19051 states and 27352 transitions. Word has length 448 [2022-11-19 08:18:09,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:09,850 INFO L495 AbstractCegarLoop]: Abstraction has 19051 states and 27352 transitions. [2022-11-19 08:18:09,851 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, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19051 states and 27352 transitions. [2022-11-19 08:18:09,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2022-11-19 08:18:09,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:09,864 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:18:09,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -980540598, now seen corresponding path program 1 times [2022-11-19 08:18:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004864293] [2022-11-19 08:18:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5706 trivial. 0 not checked. [2022-11-19 08:18:10,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:10,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004864293] [2022-11-19 08:18:10,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004864293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:10,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:10,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:10,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427038268] [2022-11-19 08:18:10,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:10,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:10,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:10,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:10,678 INFO L87 Difference]: Start difference. First operand 19051 states and 27352 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:15,209 INFO L93 Difference]: Finished difference Result 54234 states and 77821 transitions. [2022-11-19 08:18:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:15,210 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 449 [2022-11-19 08:18:15,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:15,381 INFO L225 Difference]: With dead ends: 54234 [2022-11-19 08:18:15,381 INFO L226 Difference]: Without dead ends: 35260 [2022-11-19 08:18:15,452 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 [2022-11-19 08:18:15,453 INFO L413 NwaCegarLoop]: 3122 mSDtfsCounter, 2292 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:15,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 5208 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-19 08:18:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35260 states. [2022-11-19 08:18:17,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35260 to 35241. [2022-11-19 08:18:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35241 states, 21544 states have (on average 1.310202376531749) internal successors, (28227), 21774 states have internal predecessors, (28227), 11106 states have call successors, (11106), 2589 states have call predecessors, (11106), 2588 states have return successors, (11102), 10927 states have call predecessors, (11102), 11102 states have call successors, (11102) [2022-11-19 08:18:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35241 states to 35241 states and 50435 transitions. [2022-11-19 08:18:18,003 INFO L78 Accepts]: Start accepts. Automaton has 35241 states and 50435 transitions. Word has length 449 [2022-11-19 08:18:18,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:18,004 INFO L495 AbstractCegarLoop]: Abstraction has 35241 states and 50435 transitions. [2022-11-19 08:18:18,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:18,005 INFO L276 IsEmpty]: Start isEmpty. Operand 35241 states and 50435 transitions. [2022-11-19 08:18:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2022-11-19 08:18:18,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:18,018 INFO L195 NwaCegarLoop]: trace histogram [42, 38, 38, 38, 38, 38, 38, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:18,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 08:18:18,020 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash 355201402, now seen corresponding path program 1 times [2022-11-19 08:18:18,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:18,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863035155] [2022-11-19 08:18:18,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:18,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:20,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5974 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5974 trivial. 0 not checked. [2022-11-19 08:18:20,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:20,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863035155] [2022-11-19 08:18:20,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863035155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:20,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:20,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:18:20,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049432047] [2022-11-19 08:18:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:20,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:20,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:20,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:20,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:20,570 INFO L87 Difference]: Start difference. First operand 35241 states and 50435 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:18:25,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:25,982 INFO L93 Difference]: Finished difference Result 35247 states and 50440 transitions. [2022-11-19 08:18:25,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:18:25,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 448 [2022-11-19 08:18:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:26,118 INFO L225 Difference]: With dead ends: 35247 [2022-11-19 08:18:26,118 INFO L226 Difference]: Without dead ends: 35245 [2022-11-19 08:18:26,132 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 [2022-11-19 08:18:26,133 INFO L413 NwaCegarLoop]: 2111 mSDtfsCounter, 2412 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2415 SdHoareTripleChecker+Valid, 6328 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:26,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2415 Valid, 6328 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 08:18:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35245 states. [2022-11-19 08:18:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35245 to 35245. [2022-11-19 08:18:28,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35245 states, 21547 states have (on average 1.3101591868937672) internal successors, (28230), 21777 states have internal predecessors, (28230), 11106 states have call successors, (11106), 2590 states have call predecessors, (11106), 2589 states have return successors, (11102), 10927 states have call predecessors, (11102), 11102 states have call successors, (11102) [2022-11-19 08:18:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35245 states to 35245 states and 50438 transitions. [2022-11-19 08:18:28,260 INFO L78 Accepts]: Start accepts. Automaton has 35245 states and 50438 transitions. Word has length 448 [2022-11-19 08:18:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:28,261 INFO L495 AbstractCegarLoop]: Abstraction has 35245 states and 50438 transitions. [2022-11-19 08:18:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-19 08:18:28,261 INFO L276 IsEmpty]: Start isEmpty. Operand 35245 states and 50438 transitions. [2022-11-19 08:18:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-11-19 08:18:28,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:28,269 INFO L195 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:18:28,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:28,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:28,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2106630672, now seen corresponding path program 1 times [2022-11-19 08:18:28,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:28,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149462841] [2022-11-19 08:18:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:28,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 5706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5706 trivial. 0 not checked. [2022-11-19 08:18:29,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149462841] [2022-11-19 08:18:29,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149462841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:29,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:29,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:18:29,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578537758] [2022-11-19 08:18:29,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:29,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:18:29,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:29,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:18:29,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:18:29,464 INFO L87 Difference]: Start difference. First operand 35245 states and 50438 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:34,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 08:18:36,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:36,356 INFO L93 Difference]: Finished difference Result 102849 states and 147102 transitions. [2022-11-19 08:18:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:18:36,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 454 [2022-11-19 08:18:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:36,778 INFO L225 Difference]: With dead ends: 102849 [2022-11-19 08:18:36,778 INFO L226 Difference]: Without dead ends: 67681 [2022-11-19 08:18:36,938 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 [2022-11-19 08:18:36,939 INFO L413 NwaCegarLoop]: 3017 mSDtfsCounter, 2284 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:36,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2284 Valid, 5106 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 08:18:37,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67681 states. [2022-11-19 08:18:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67681 to 67610. [2022-11-19 08:18:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67610 states, 41485 states have (on average 1.308231891044956) internal successors, (54272), 41987 states have internal predecessors, (54272), 21083 states have call successors, (21083), 5040 states have call predecessors, (21083), 5039 states have return successors, (21079), 20676 states have call predecessors, (21079), 21079 states have call successors, (21079) [2022-11-19 08:18:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67610 states to 67610 states and 96434 transitions. [2022-11-19 08:18:41,376 INFO L78 Accepts]: Start accepts. Automaton has 67610 states and 96434 transitions. Word has length 454 [2022-11-19 08:18:41,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:41,379 INFO L495 AbstractCegarLoop]: Abstraction has 67610 states and 96434 transitions. [2022-11-19 08:18:41,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-19 08:18:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 67610 states and 96434 transitions. [2022-11-19 08:18:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-11-19 08:18:41,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:41,401 INFO L195 NwaCegarLoop]: trace histogram [42, 38, 38, 38, 38, 38, 38, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:18:41,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:41,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2025321399, now seen corresponding path program 1 times [2022-11-19 08:18:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015083056] [2022-11-19 08:18:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:41,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:41,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5976 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5974 trivial. 0 not checked. [2022-11-19 08:18:43,588 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:43,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015083056] [2022-11-19 08:18:43,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015083056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:43,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:43,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:18:43,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318043638] [2022-11-19 08:18:43,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:43,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:43,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:43,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:43,591 INFO L87 Difference]: Start difference. First operand 67610 states and 96434 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-19 08:18:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:18:49,559 INFO L93 Difference]: Finished difference Result 67616 states and 96439 transitions. [2022-11-19 08:18:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:18:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 453 [2022-11-19 08:18:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:18:49,768 INFO L225 Difference]: With dead ends: 67616 [2022-11-19 08:18:49,768 INFO L226 Difference]: Without dead ends: 67614 [2022-11-19 08:18:49,790 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 [2022-11-19 08:18:49,791 INFO L413 NwaCegarLoop]: 2114 mSDtfsCounter, 2407 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:18:49,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2409 Valid, 6331 Invalid, 1206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-19 08:18:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67614 states. [2022-11-19 08:18:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67614 to 67614. [2022-11-19 08:18:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67614 states, 41488 states have (on average 1.3082096027767065) internal successors, (54275), 41990 states have internal predecessors, (54275), 21083 states have call successors, (21083), 5041 states have call predecessors, (21083), 5040 states have return successors, (21079), 20676 states have call predecessors, (21079), 21079 states have call successors, (21079) [2022-11-19 08:18:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67614 states to 67614 states and 96437 transitions. [2022-11-19 08:18:54,180 INFO L78 Accepts]: Start accepts. Automaton has 67614 states and 96437 transitions. Word has length 453 [2022-11-19 08:18:54,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:18:54,180 INFO L495 AbstractCegarLoop]: Abstraction has 67614 states and 96437 transitions. [2022-11-19 08:18:54,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-19 08:18:54,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67614 states and 96437 transitions. [2022-11-19 08:18:54,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-11-19 08:18:54,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:18:54,192 INFO L195 NwaCegarLoop]: trace histogram [42, 38, 38, 38, 38, 38, 38, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:18:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:18:54,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 08:18:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:18:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1918723824, now seen corresponding path program 1 times [2022-11-19 08:18:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:18:54,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298375774] [2022-11-19 08:18:54,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:18:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:18:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:18:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5983 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5979 trivial. 0 not checked. [2022-11-19 08:18:56,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:18:56,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298375774] [2022-11-19 08:18:56,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298375774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:18:56,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:18:56,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:18:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515231876] [2022-11-19 08:18:56,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:18:56,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:18:56,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:18:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:18:56,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:18:56,227 INFO L87 Difference]: Start difference. First operand 67614 states and 96437 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51)