./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/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 b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 --- 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 07:08:03,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:08:03,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:08:03,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:08:03,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:08:03,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:08:03,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:08:03,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:08:03,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:08:03,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:08:03,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:08:03,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:08:03,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:08:03,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:08:03,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:08:03,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:08:03,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:08:03,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:08:03,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:08:03,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:08:03,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:08:03,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:08:03,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:08:03,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:08:03,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:08:03,656 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:08:03,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:08:03,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:08:03,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:08:03,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:08:03,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:08:03,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:08:03,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:08:03,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:08:03,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:08:03,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:08:03,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:08:03,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:08:03,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:08:03,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:08:03,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:08:03,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:08:03,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:08:03,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:08:03,711 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:08:03,711 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:08:03,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:08:03,712 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:08:03,712 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:08:03,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:08:03,713 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:08:03,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:08:03,714 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:08:03,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:08:03,715 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:08:03,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:08:03,715 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:08:03,715 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:08:03,715 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:08:03,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:08:03,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:08:03,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:08:03,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:08:03,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:08:03,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:08:03,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:08:03,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:08:03,718 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:08:03,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:08:03,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:08:03,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:08:03,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:08:03,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:08:03,719 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:08:03,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:08:03,720 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:08:03,720 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:08:03,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:08:03,721 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:08:03,721 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:08:03,721 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b230ba173626e1a1717879ee489b2ae4510c44810563ac66116e22604ac558a2 [2022-11-19 07:08:04,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:08:04,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:08:04,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:08:04,038 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:08:04,039 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:08:04,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-19 07:08:04,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/data/82fdb89f4/7876debb6bb34c2ab1045b5db4fd40e4/FLAG099a5d39c [2022-11-19 07:08:05,079 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:08:05,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-19 07:08:05,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/data/82fdb89f4/7876debb6bb34c2ab1045b5db4fd40e4/FLAG099a5d39c [2022-11-19 07:08:05,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/data/82fdb89f4/7876debb6bb34c2ab1045b5db4fd40e4 [2022-11-19 07:08:05,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:08:05,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:08:05,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:08:05,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:08:05,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:08:05,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:08:05" (1/1) ... [2022-11-19 07:08:05,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120662de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:05, skipping insertion in model container [2022-11-19 07:08:05,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:08:05" (1/1) ... [2022-11-19 07:08:05,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:08:05,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:08:08,247 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-19 07:08:08,254 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-19 07:08:08,254 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-19 07:08:08,255 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-19 07:08:08,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:08:08,338 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:08:08,752 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309274,309287] [2022-11-19 07:08:08,753 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309443,309456] [2022-11-19 07:08:08,753 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309610,309623] [2022-11-19 07:08:08,754 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_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/sv-benchmarks/c/ldv-challenges/linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i[309778,309791] [2022-11-19 07:08:08,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:08:08,924 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:08:08,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08 WrapperNode [2022-11-19 07:08:08,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:08:08,926 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:08:08,926 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:08:08,926 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:08:08,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,172 INFO L138 Inliner]: procedures = 412, calls = 1674, calls flagged for inlining = 194, calls inlined = 177, statements flattened = 4085 [2022-11-19 07:08:09,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:08:09,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:08:09,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:08:09,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:08:09,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,365 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:08:09,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:08:09,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:08:09,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:08:09,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (1/1) ... [2022-11-19 07:08:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:08:09,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:08:09,464 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:08:09,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6daa84e6-3a9d-4b1b-930c-72ecec37dfa9/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:08:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-19 07:08:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-19 07:08:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:08:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:08:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-11-19 07:08:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-11-19 07:08:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-19 07:08:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-19 07:08:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:08:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:08:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:08:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-19 07:08:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-19 07:08:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-19 07:08:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-11-19 07:08:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-11-19 07:08:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-11-19 07:08:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-11-19 07:08:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-19 07:08:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-19 07:08:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure dev_trans_start [2022-11-19 07:08:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_trans_start [2022-11-19 07:08:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_poll [2022-11-19 07:08:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_poll [2022-11-19 07:08:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-19 07:08:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-19 07:08:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 07:08:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 07:08:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-19 07:08:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-19 07:08:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-11-19 07:08:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-11-19 07:08:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-19 07:08:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-19 07:08:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:08:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:08:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-19 07:08:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-19 07:08:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:08:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_stop [2022-11-19 07:08:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_stop [2022-11-19 07:08:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-19 07:08:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-19 07:08:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:08:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-19 07:08:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-19 07:08:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:08:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 07:08:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 07:08:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_set_filter_mode [2022-11-19 07:08:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_set_filter_mode [2022-11-19 07:08:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write_1bit [2022-11-19 07:08:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write_1bit [2022-11-19 07:08:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:08:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-19 07:08:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~TO~VOID [2022-11-19 07:08:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-11-19 07:08:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-11-19 07:08:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 07:08:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 07:08:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-19 07:08:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-19 07:08:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 07:08:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 07:08:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 07:08:09,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 07:08:09,538 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-19 07:08:09,539 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-19 07:08:09,539 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-19 07:08:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-19 07:08:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read_1bit [2022-11-19 07:08:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read_1bit [2022-11-19 07:08:09,540 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:08:09,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-19 07:08:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reset_prepare [2022-11-19 07:08:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reset_prepare [2022-11-19 07:08:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:08:09,541 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-19 07:08:09,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-19 07:08:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 07:08:09,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 07:08:09,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:08:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure allocate_rx_buffer [2022-11-19 07:08:09,543 INFO L138 BoogieDeclarations]: Found implementation of procedure allocate_rx_buffer [2022-11-19 07:08:09,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 07:08:09,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 07:08:09,544 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-19 07:08:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-19 07:08:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:08:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:08:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:08:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-19 07:08:09,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-19 07:08:09,545 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 07:08:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 07:08:09,546 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-19 07:08:09,546 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-19 07:08:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-19 07:08:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-19 07:08:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-19 07:08:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-19 07:08:09,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:08:09,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:08:09,548 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_reuse_skb [2022-11-19 07:08:09,549 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_reuse_skb [2022-11-19 07:08:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_open [2022-11-19 07:08:09,551 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_open [2022-11-19 07:08:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:08:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:08:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:08:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:08:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:08:09,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-19 07:08:09,554 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-19 07:08:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-19 07:08:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-19 07:08:09,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_uli526x_board_info [2022-11-19 07:08:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-19 07:08:09,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-19 07:08:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-11-19 07:08:09,560 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-11-19 07:08:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-19 07:08:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-19 07:08:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-19 07:08:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-19 07:08:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-19 07:08:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-19 07:08:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure send_filter_frame [2022-11-19 07:08:09,561 INFO L138 BoogieDeclarations]: Found implementation of procedure send_filter_frame [2022-11-19 07:08:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-19 07:08:09,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_uli526x_cleanup_module_14_2 [2022-11-19 07:08:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-19 07:08:09,562 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-19 07:08:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:08:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-19 07:08:09,562 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-19 07:08:09,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:08:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-19 07:08:09,563 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-19 07:08:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:08:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-19 07:08:09,563 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-19 07:08:09,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 07:08:09,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 07:08:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_resume [2022-11-19 07:08:09,564 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_resume [2022-11-19 07:08:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-19 07:08:09,564 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-19 07:08:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_interrupt [2022-11-19 07:08:09,564 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_interrupt [2022-11-19 07:08:09,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-19 07:08:09,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~TO~~u16~0 [2022-11-19 07:08:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_remove_one [2022-11-19 07:08:09,565 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_remove_one [2022-11-19 07:08:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure update_cr6 [2022-11-19 07:08:09,565 INFO L138 BoogieDeclarations]: Found implementation of procedure update_cr6 [2022-11-19 07:08:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:08:09,565 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:08:09,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:08:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure srom_clk_write [2022-11-19 07:08:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_clk_write [2022-11-19 07:08:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_free_rxbuffer [2022-11-19 07:08:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_free_rxbuffer [2022-11-19 07:08:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 07:08:09,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 07:08:09,566 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-19 07:08:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-19 07:08:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-19 07:08:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-19 07:08:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure uli526x_init [2022-11-19 07:08:09,567 INFO L138 BoogieDeclarations]: Found implementation of procedure uli526x_init [2022-11-19 07:08:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:08:09,567 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 07:08:09,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 07:08:10,417 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:08:10,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:08:10,774 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:08:13,357 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 07:08:13,659 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:08:14,919 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:08:14,919 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:08:14,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:08:14 BoogieIcfgContainer [2022-11-19 07:08:14,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:08:14,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:08:14,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:08:14,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:08:14,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:08:05" (1/3) ... [2022-11-19 07:08:14,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e61f438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:08:14, skipping insertion in model container [2022-11-19 07:08:14,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:08:08" (2/3) ... [2022-11-19 07:08:14,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e61f438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:08:14, skipping insertion in model container [2022-11-19 07:08:14,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:08:14" (3/3) ... [2022-11-19 07:08:14,933 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14__complex_emg__linux-kernel-locking-spinlock__drivers-net-ethernet-dec-tulip-uli526x.cil.i [2022-11-19 07:08:14,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:08:14,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 07:08:15,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:08:15,029 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;@3ca4006c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:08:15,030 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:08:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) [2022-11-19 07:08:15,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 07:08:15,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:15,055 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:15,056 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -829211039, now seen corresponding path program 1 times [2022-11-19 07:08:15,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:15,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008419660] [2022-11-19 07:08:15,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:15,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-19 07:08:15,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:15,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008419660] [2022-11-19 07:08:15,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008419660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:15,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:15,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976534857] [2022-11-19 07:08:15,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:15,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:15,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:15,935 INFO L87 Difference]: Start difference. First operand has 1067 states, 596 states have (on average 1.2953020134228188) internal successors, (772), 619 states have internal predecessors, (772), 390 states have call successors, (390), 79 states have call predecessors, (390), 78 states have return successors, (384), 378 states have call predecessors, (384), 384 states have call successors, (384) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:18,546 INFO L93 Difference]: Finished difference Result 3082 states and 4527 transitions. [2022-11-19 07:08:18,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:18,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-11-19 07:08:18,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:18,579 INFO L225 Difference]: With dead ends: 3082 [2022-11-19 07:08:18,579 INFO L226 Difference]: Without dead ends: 2024 [2022-11-19 07:08:18,591 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 07:08:18,594 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 1427 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:18,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 2934 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:08:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2022-11-19 07:08:18,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 2020. [2022-11-19 07:08:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2020 states, 1139 states have (on average 1.2853380158033363) internal successors, (1464), 1184 states have internal predecessors, (1464), 726 states have call successors, (726), 153 states have call predecessors, (726), 152 states have return successors, (722), 710 states have call predecessors, (722), 722 states have call successors, (722) [2022-11-19 07:08:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 2912 transitions. [2022-11-19 07:08:18,856 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 2912 transitions. Word has length 111 [2022-11-19 07:08:18,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:18,858 INFO L495 AbstractCegarLoop]: Abstraction has 2020 states and 2912 transitions. [2022-11-19 07:08:18,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:18,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 2912 transitions. [2022-11-19 07:08:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 07:08:18,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:18,869 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:08:18,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:18,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2056025681, now seen corresponding path program 1 times [2022-11-19 07:08:18,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:18,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397447339] [2022-11-19 07:08:18,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-19 07:08:19,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:19,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397447339] [2022-11-19 07:08:19,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397447339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:19,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:19,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263923988] [2022-11-19 07:08:19,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:19,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:19,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:19,222 INFO L87 Difference]: Start difference. First operand 2020 states and 2912 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:08:21,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:21,606 INFO L93 Difference]: Finished difference Result 5958 states and 8596 transitions. [2022-11-19 07:08:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:21,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-19 07:08:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:21,635 INFO L225 Difference]: With dead ends: 5958 [2022-11-19 07:08:21,635 INFO L226 Difference]: Without dead ends: 3957 [2022-11-19 07:08:21,647 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 07:08:21,648 INFO L413 NwaCegarLoop]: 1666 mSDtfsCounter, 1470 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:21,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1470 Valid, 2930 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:08:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-19 07:08:21,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3927. [2022-11-19 07:08:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3927 states, 2228 states have (on average 1.2885996409335727) internal successors, (2871), 2322 states have internal predecessors, (2871), 1397 states have call successors, (1397), 304 states have call predecessors, (1397), 299 states have return successors, (1399), 1356 states have call predecessors, (1399), 1393 states have call successors, (1399) [2022-11-19 07:08:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3927 states to 3927 states and 5667 transitions. [2022-11-19 07:08:21,941 INFO L78 Accepts]: Start accepts. Automaton has 3927 states and 5667 transitions. Word has length 115 [2022-11-19 07:08:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:21,941 INFO L495 AbstractCegarLoop]: Abstraction has 3927 states and 5667 transitions. [2022-11-19 07:08:21,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:08:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3927 states and 5667 transitions. [2022-11-19 07:08:21,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 07:08:21,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:21,950 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:21,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:08:21,951 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:21,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:21,951 INFO L85 PathProgramCache]: Analyzing trace with hash -828902827, now seen corresponding path program 1 times [2022-11-19 07:08:21,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:21,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625262154] [2022-11-19 07:08:21,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:21,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-19 07:08:22,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:22,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625262154] [2022-11-19 07:08:22,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625262154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:22,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:22,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835235022] [2022-11-19 07:08:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:22,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:22,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:22,176 INFO L87 Difference]: Start difference. First operand 3927 states and 5667 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:08:24,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:24,786 INFO L93 Difference]: Finished difference Result 11395 states and 16413 transitions. [2022-11-19 07:08:24,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:24,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-19 07:08:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:24,842 INFO L225 Difference]: With dead ends: 11395 [2022-11-19 07:08:24,842 INFO L226 Difference]: Without dead ends: 7487 [2022-11-19 07:08:24,867 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 07:08:24,870 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1380 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:24,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 2971 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:08:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7487 states. [2022-11-19 07:08:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7487 to 7453. [2022-11-19 07:08:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7453 states, 4238 states have (on average 1.2890514393581878) internal successors, (5463), 4424 states have internal predecessors, (5463), 2627 states have call successors, (2627), 598 states have call predecessors, (2627), 585 states have return successors, (2637), 2538 states have call predecessors, (2637), 2623 states have call successors, (2637) [2022-11-19 07:08:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7453 states to 7453 states and 10727 transitions. [2022-11-19 07:08:25,521 INFO L78 Accepts]: Start accepts. Automaton has 7453 states and 10727 transitions. Word has length 115 [2022-11-19 07:08:25,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:25,524 INFO L495 AbstractCegarLoop]: Abstraction has 7453 states and 10727 transitions. [2022-11-19 07:08:25,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:08:25,525 INFO L276 IsEmpty]: Start isEmpty. Operand 7453 states and 10727 transitions. [2022-11-19 07:08:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 07:08:25,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:25,530 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:25,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:08:25,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 528905610, now seen corresponding path program 1 times [2022-11-19 07:08:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:25,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188010360] [2022-11-19 07:08:25,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:25,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-19 07:08:26,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:26,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188010360] [2022-11-19 07:08:26,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188010360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:26,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:26,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:08:26,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404870972] [2022-11-19 07:08:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:08:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:08:26,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:08:26,262 INFO L87 Difference]: Start difference. First operand 7453 states and 10727 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:32,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:32,765 INFO L93 Difference]: Finished difference Result 16965 states and 24267 transitions. [2022-11-19 07:08:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:08:32,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 118 [2022-11-19 07:08:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:32,841 INFO L225 Difference]: With dead ends: 16965 [2022-11-19 07:08:32,847 INFO L226 Difference]: Without dead ends: 9531 [2022-11-19 07:08:32,880 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 07:08:32,883 INFO L413 NwaCegarLoop]: 1887 mSDtfsCounter, 2658 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 2224 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4726 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:32,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 4726 Invalid, 2263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 2224 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-19 07:08:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9531 states. [2022-11-19 07:08:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9531 to 9459. [2022-11-19 07:08:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9459 states, 5567 states have (on average 1.2927968385126638) internal successors, (7197), 5795 states have internal predecessors, (7197), 3090 states have call successors, (3090), 820 states have call predecessors, (3090), 799 states have return successors, (3093), 2963 states have call predecessors, (3093), 3086 states have call successors, (3093) [2022-11-19 07:08:33,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 13380 transitions. [2022-11-19 07:08:33,607 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 13380 transitions. Word has length 118 [2022-11-19 07:08:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:33,608 INFO L495 AbstractCegarLoop]: Abstraction has 9459 states and 13380 transitions. [2022-11-19 07:08:33,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:33,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 13380 transitions. [2022-11-19 07:08:33,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-19 07:08:33,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:33,610 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:33,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:08:33,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:33,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:33,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1416198307, now seen corresponding path program 1 times [2022-11-19 07:08:33,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:33,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824640864] [2022-11-19 07:08:33,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-11-19 07:08:33,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:33,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824640864] [2022-11-19 07:08:33,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824640864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:33,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:33,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:33,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062151333] [2022-11-19 07:08:33,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:33,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:33,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:33,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:33,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:33,790 INFO L87 Difference]: Start difference. First operand 9459 states and 13380 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:36,970 INFO L93 Difference]: Finished difference Result 24861 states and 35112 transitions. [2022-11-19 07:08:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 121 [2022-11-19 07:08:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:37,099 INFO L225 Difference]: With dead ends: 24861 [2022-11-19 07:08:37,099 INFO L226 Difference]: Without dead ends: 15421 [2022-11-19 07:08:37,156 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 07:08:37,157 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 1337 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:37,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 2892 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:08:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15421 states. [2022-11-19 07:08:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15421 to 15389. [2022-11-19 07:08:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15389 states, 8959 states have (on average 1.2782676638017636) internal successors, (11452), 9331 states have internal predecessors, (11452), 5093 states have call successors, (5093), 1377 states have call predecessors, (5093), 1334 states have return successors, (5104), 4859 states have call predecessors, (5104), 5089 states have call successors, (5104) [2022-11-19 07:08:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15389 states to 15389 states and 21649 transitions. [2022-11-19 07:08:38,277 INFO L78 Accepts]: Start accepts. Automaton has 15389 states and 21649 transitions. Word has length 121 [2022-11-19 07:08:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:38,279 INFO L495 AbstractCegarLoop]: Abstraction has 15389 states and 21649 transitions. [2022-11-19 07:08:38,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:08:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 15389 states and 21649 transitions. [2022-11-19 07:08:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-19 07:08:38,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:38,283 INFO L195 NwaCegarLoop]: trace histogram [11, 9, 9, 9, 9, 9, 9, 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] [2022-11-19 07:08:38,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:08:38,284 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:38,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:38,284 INFO L85 PathProgramCache]: Analyzing trace with hash 808798987, now seen corresponding path program 1 times [2022-11-19 07:08:38,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:38,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942731734] [2022-11-19 07:08:38,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:38,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-11-19 07:08:38,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:38,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942731734] [2022-11-19 07:08:38,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942731734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:38,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:38,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:38,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419961001] [2022-11-19 07:08:38,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:38,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:38,531 INFO L87 Difference]: Start difference. First operand 15389 states and 21649 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:08:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:41,774 INFO L93 Difference]: Finished difference Result 45249 states and 63699 transitions. [2022-11-19 07:08:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2022-11-19 07:08:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:41,973 INFO L225 Difference]: With dead ends: 45249 [2022-11-19 07:08:41,974 INFO L226 Difference]: Without dead ends: 29879 [2022-11-19 07:08:42,051 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 07:08:42,053 INFO L413 NwaCegarLoop]: 1745 mSDtfsCounter, 1477 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 3039 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:42,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 3039 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:08:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29879 states. [2022-11-19 07:08:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29879 to 29805. [2022-11-19 07:08:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29805 states, 17331 states have (on average 1.2785759621487507) internal successors, (22159), 18097 states have internal predecessors, (22159), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:08:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29805 states to 29805 states and 41945 transitions. [2022-11-19 07:08:44,751 INFO L78 Accepts]: Start accepts. Automaton has 29805 states and 41945 transitions. Word has length 133 [2022-11-19 07:08:44,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:44,751 INFO L495 AbstractCegarLoop]: Abstraction has 29805 states and 41945 transitions. [2022-11-19 07:08:44,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-19 07:08:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 29805 states and 41945 transitions. [2022-11-19 07:08:44,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-19 07:08:44,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:44,755 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:44,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:08:44,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -316784354, now seen corresponding path program 1 times [2022-11-19 07:08:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:44,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252196190] [2022-11-19 07:08:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2022-11-19 07:08:45,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:45,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252196190] [2022-11-19 07:08:45,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252196190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:45,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:45,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:08:45,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475617829] [2022-11-19 07:08:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:45,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:08:45,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:08:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:45,202 INFO L87 Difference]: Start difference. First operand 29805 states and 41945 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:08:47,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:47,850 INFO L93 Difference]: Finished difference Result 59497 states and 83762 transitions. [2022-11-19 07:08:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:08:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2022-11-19 07:08:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:48,036 INFO L225 Difference]: With dead ends: 59497 [2022-11-19 07:08:48,036 INFO L226 Difference]: Without dead ends: 29757 [2022-11-19 07:08:48,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:08:48,167 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 1485 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:48,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1288 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-19 07:08:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29757 states. [2022-11-19 07:08:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29757 to 29757. [2022-11-19 07:08:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29757 states, 17283 states have (on average 1.2682404675114274) internal successors, (21919), 18049 states have internal predecessors, (21919), 9880 states have call successors, (9880), 2676 states have call predecessors, (9880), 2591 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:08:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29757 states to 29757 states and 41705 transitions. [2022-11-19 07:08:50,613 INFO L78 Accepts]: Start accepts. Automaton has 29757 states and 41705 transitions. Word has length 156 [2022-11-19 07:08:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:50,613 INFO L495 AbstractCegarLoop]: Abstraction has 29757 states and 41705 transitions. [2022-11-19 07:08:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:08:50,614 INFO L276 IsEmpty]: Start isEmpty. Operand 29757 states and 41705 transitions. [2022-11-19 07:08:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-19 07:08:50,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:50,617 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:08:50,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:08:50,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:50,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 778410936, now seen corresponding path program 1 times [2022-11-19 07:08:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:50,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585794398] [2022-11-19 07:08:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:51,148 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-19 07:08:51,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:51,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585794398] [2022-11-19 07:08:51,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585794398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:51,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:51,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:51,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108893763] [2022-11-19 07:08:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:51,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:51,151 INFO L87 Difference]: Start difference. First operand 29757 states and 41705 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:08:54,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:08:54,913 INFO L93 Difference]: Finished difference Result 29763 states and 41710 transitions. [2022-11-19 07:08:54,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:08:54,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 158 [2022-11-19 07:08:54,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:08:55,065 INFO L225 Difference]: With dead ends: 29763 [2022-11-19 07:08:55,066 INFO L226 Difference]: Without dead ends: 29761 [2022-11-19 07:08:55,085 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 07:08:55,086 INFO L413 NwaCegarLoop]: 1288 mSDtfsCounter, 1463 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:08:55,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 3850 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:08:55,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29761 states. [2022-11-19 07:08:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29761 to 29761. [2022-11-19 07:08:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29761 states, 17286 states have (on average 1.2681939141501792) internal successors, (21922), 18052 states have internal predecessors, (21922), 9880 states have call successors, (9880), 2677 states have call predecessors, (9880), 2592 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:08:57,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29761 states to 29761 states and 41708 transitions. [2022-11-19 07:08:57,423 INFO L78 Accepts]: Start accepts. Automaton has 29761 states and 41708 transitions. Word has length 158 [2022-11-19 07:08:57,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:08:57,424 INFO L495 AbstractCegarLoop]: Abstraction has 29761 states and 41708 transitions. [2022-11-19 07:08:57,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:08:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 29761 states and 41708 transitions. [2022-11-19 07:08:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 07:08:57,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:08:57,427 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 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] [2022-11-19 07:08:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:08:57,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:08:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:08:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1332125131, now seen corresponding path program 1 times [2022-11-19 07:08:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:08:57,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103459058] [2022-11-19 07:08:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:08:57,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:08:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:08:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2022-11-19 07:08:57,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:08:57,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103459058] [2022-11-19 07:08:57,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103459058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:08:57,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:08:57,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:08:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929437093] [2022-11-19 07:08:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:08:57,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:08:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:08:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:08:57,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:08:57,903 INFO L87 Difference]: Start difference. First operand 29761 states and 41708 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:09:02,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:02,551 INFO L93 Difference]: Finished difference Result 29767 states and 41713 transitions. [2022-11-19 07:09:02,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:02,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2022-11-19 07:09:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:02,686 INFO L225 Difference]: With dead ends: 29767 [2022-11-19 07:09:02,687 INFO L226 Difference]: Without dead ends: 29765 [2022-11-19 07:09:02,705 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 07:09:02,706 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1457 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:02,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:09:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29765 states. [2022-11-19 07:09:04,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29765 to 29765. [2022-11-19 07:09:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29765 states, 17289 states have (on average 1.2681473769448783) internal successors, (21925), 18055 states have internal predecessors, (21925), 9880 states have call successors, (9880), 2678 states have call predecessors, (9880), 2593 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29765 states to 29765 states and 41711 transitions. [2022-11-19 07:09:04,481 INFO L78 Accepts]: Start accepts. Automaton has 29765 states and 41711 transitions. Word has length 166 [2022-11-19 07:09:04,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 29765 states and 41711 transitions. [2022-11-19 07:09:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:09:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 29765 states and 41711 transitions. [2022-11-19 07:09:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-19 07:09:04,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:04,487 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:04,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:09:04,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 876854712, now seen corresponding path program 1 times [2022-11-19 07:09:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:04,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682772984] [2022-11-19 07:09:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:04,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:04,883 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-11-19 07:09:04,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:04,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682772984] [2022-11-19 07:09:04,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682772984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:04,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:04,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:04,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827682326] [2022-11-19 07:09:04,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:04,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:04,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:04,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:04,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:04,886 INFO L87 Difference]: Start difference. First operand 29765 states and 41711 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:09:09,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:09,245 INFO L93 Difference]: Finished difference Result 29771 states and 41716 transitions. [2022-11-19 07:09:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 168 [2022-11-19 07:09:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:09,381 INFO L225 Difference]: With dead ends: 29771 [2022-11-19 07:09:09,381 INFO L226 Difference]: Without dead ends: 29769 [2022-11-19 07:09:09,399 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 07:09:09,400 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1458 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:09,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-19 07:09:09,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29769 states. [2022-11-19 07:09:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29769 to 29769. [2022-11-19 07:09:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29769 states, 17292 states have (on average 1.2681008558871154) internal successors, (21928), 18058 states have internal predecessors, (21928), 9880 states have call successors, (9880), 2679 states have call predecessors, (9880), 2594 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29769 states to 29769 states and 41714 transitions. [2022-11-19 07:09:11,300 INFO L78 Accepts]: Start accepts. Automaton has 29769 states and 41714 transitions. Word has length 168 [2022-11-19 07:09:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:11,300 INFO L495 AbstractCegarLoop]: Abstraction has 29769 states and 41714 transitions. [2022-11-19 07:09:11,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:09:11,301 INFO L276 IsEmpty]: Start isEmpty. Operand 29769 states and 41714 transitions. [2022-11-19 07:09:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-19 07:09:11,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:11,307 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:11,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:09:11,308 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:11,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1499440482, now seen corresponding path program 1 times [2022-11-19 07:09:11,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:11,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736826396] [2022-11-19 07:09:11,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:11,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-11-19 07:09:11,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736826396] [2022-11-19 07:09:11,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736826396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:11,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:11,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122815081] [2022-11-19 07:09:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:11,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:11,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:11,931 INFO L87 Difference]: Start difference. First operand 29769 states and 41714 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:09:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:15,938 INFO L93 Difference]: Finished difference Result 29775 states and 41719 transitions. [2022-11-19 07:09:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:15,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 173 [2022-11-19 07:09:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:16,030 INFO L225 Difference]: With dead ends: 29775 [2022-11-19 07:09:16,030 INFO L226 Difference]: Without dead ends: 29773 [2022-11-19 07:09:16,042 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 07:09:16,043 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1458 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:16,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-19 07:09:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29773 states. [2022-11-19 07:09:17,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29773 to 29773. [2022-11-19 07:09:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29773 states, 17295 states have (on average 1.268054350968488) internal successors, (21931), 18061 states have internal predecessors, (21931), 9880 states have call successors, (9880), 2680 states have call predecessors, (9880), 2595 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29773 states to 29773 states and 41717 transitions. [2022-11-19 07:09:17,966 INFO L78 Accepts]: Start accepts. Automaton has 29773 states and 41717 transitions. Word has length 173 [2022-11-19 07:09:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:17,967 INFO L495 AbstractCegarLoop]: Abstraction has 29773 states and 41717 transitions. [2022-11-19 07:09:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 07:09:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 29773 states and 41717 transitions. [2022-11-19 07:09:17,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-19 07:09:17,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:17,972 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:17,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:09:17,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2127630264, now seen corresponding path program 1 times [2022-11-19 07:09:17,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:17,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848322595] [2022-11-19 07:09:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:17,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:18,401 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 423 trivial. 0 not checked. [2022-11-19 07:09:18,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:18,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848322595] [2022-11-19 07:09:18,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848322595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:18,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:18,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:18,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842608923] [2022-11-19 07:09:18,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:18,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:18,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:18,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:18,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:18,404 INFO L87 Difference]: Start difference. First operand 29773 states and 41717 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:09:22,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:22,687 INFO L93 Difference]: Finished difference Result 29779 states and 41722 transitions. [2022-11-19 07:09:22,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:22,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 178 [2022-11-19 07:09:22,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:22,810 INFO L225 Difference]: With dead ends: 29779 [2022-11-19 07:09:22,810 INFO L226 Difference]: Without dead ends: 29777 [2022-11-19 07:09:22,825 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 07:09:22,826 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1458 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:22,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-19 07:09:22,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29777 states. [2022-11-19 07:09:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29777 to 29777. [2022-11-19 07:09:25,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29777 states, 17298 states have (on average 1.268007862180599) internal successors, (21934), 18064 states have internal predecessors, (21934), 9880 states have call successors, (9880), 2681 states have call predecessors, (9880), 2596 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29777 states to 29777 states and 41720 transitions. [2022-11-19 07:09:25,185 INFO L78 Accepts]: Start accepts. Automaton has 29777 states and 41720 transitions. Word has length 178 [2022-11-19 07:09:25,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:25,186 INFO L495 AbstractCegarLoop]: Abstraction has 29777 states and 41720 transitions. [2022-11-19 07:09:25,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-19 07:09:25,186 INFO L276 IsEmpty]: Start isEmpty. Operand 29777 states and 41720 transitions. [2022-11-19 07:09:25,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-19 07:09:25,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:25,189 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 6, 5, 5, 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] [2022-11-19 07:09:25,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:09:25,190 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:25,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1243596973, now seen corresponding path program 1 times [2022-11-19 07:09:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:25,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586796014] [2022-11-19 07:09:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:25,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2022-11-19 07:09:25,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:25,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586796014] [2022-11-19 07:09:25,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586796014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:25,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:25,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30463826] [2022-11-19 07:09:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:25,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:25,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:25,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:25,607 INFO L87 Difference]: Start difference. First operand 29777 states and 41720 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:09:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:30,632 INFO L93 Difference]: Finished difference Result 29783 states and 41725 transitions. [2022-11-19 07:09:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:30,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 187 [2022-11-19 07:09:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:30,761 INFO L225 Difference]: With dead ends: 29783 [2022-11-19 07:09:30,761 INFO L226 Difference]: Without dead ends: 29781 [2022-11-19 07:09:30,774 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 07:09:30,774 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1457 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:30,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:09:30,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29781 states. [2022-11-19 07:09:32,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29781 to 29781. [2022-11-19 07:09:32,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29781 states, 17301 states have (on average 1.267961389515057) internal successors, (21937), 18067 states have internal predecessors, (21937), 9880 states have call successors, (9880), 2682 states have call predecessors, (9880), 2597 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29781 states to 29781 states and 41723 transitions. [2022-11-19 07:09:32,880 INFO L78 Accepts]: Start accepts. Automaton has 29781 states and 41723 transitions. Word has length 187 [2022-11-19 07:09:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:32,880 INFO L495 AbstractCegarLoop]: Abstraction has 29781 states and 41723 transitions. [2022-11-19 07:09:32,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-19 07:09:32,881 INFO L276 IsEmpty]: Start isEmpty. Operand 29781 states and 41723 transitions. [2022-11-19 07:09:32,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-19 07:09:32,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:32,886 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:32,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:09:32,887 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 550605240, now seen corresponding path program 1 times [2022-11-19 07:09:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:32,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523036345] [2022-11-19 07:09:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-19 07:09:33,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:33,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523036345] [2022-11-19 07:09:33,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523036345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:33,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:33,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:33,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662385329] [2022-11-19 07:09:33,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:33,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:33,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:33,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:33,301 INFO L87 Difference]: Start difference. First operand 29781 states and 41723 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:09:37,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:37,796 INFO L93 Difference]: Finished difference Result 29787 states and 41728 transitions. [2022-11-19 07:09:37,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:09:37,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 188 [2022-11-19 07:09:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:37,898 INFO L225 Difference]: With dead ends: 29787 [2022-11-19 07:09:37,898 INFO L226 Difference]: Without dead ends: 29785 [2022-11-19 07:09:37,911 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 07:09:37,912 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 1458 mSDsluCounter, 2562 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:37,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 3853 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 07:09:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29785 states. [2022-11-19 07:09:40,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29785 to 29785. [2022-11-19 07:09:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29785 states, 17304 states have (on average 1.2679149329634767) internal successors, (21940), 18070 states have internal predecessors, (21940), 9880 states have call successors, (9880), 2683 states have call predecessors, (9880), 2598 states have return successors, (9906), 9381 states have call predecessors, (9906), 9876 states have call successors, (9906) [2022-11-19 07:09:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29785 states to 29785 states and 41726 transitions. [2022-11-19 07:09:40,281 INFO L78 Accepts]: Start accepts. Automaton has 29785 states and 41726 transitions. Word has length 188 [2022-11-19 07:09:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:40,282 INFO L495 AbstractCegarLoop]: Abstraction has 29785 states and 41726 transitions. [2022-11-19 07:09:40,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-19 07:09:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 29785 states and 41726 transitions. [2022-11-19 07:09:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-19 07:09:40,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:40,288 INFO L195 NwaCegarLoop]: trace histogram [13, 9, 9, 9, 9, 9, 9, 8, 7, 7, 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] [2022-11-19 07:09:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-19 07:09:40,288 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 07:09:40,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -259360629, now seen corresponding path program 1 times [2022-11-19 07:09:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:40,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160133362] [2022-11-19 07:09:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:40,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:40,805 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2022-11-19 07:09:40,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:40,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160133362] [2022-11-19 07:09:40,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160133362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:40,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:40,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:40,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849089049] [2022-11-19 07:09:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:40,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:40,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:40,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:40,809 INFO L87 Difference]: Start difference. First operand 29785 states and 41726 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27)