./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-media-common-saa7146-saa7146_vv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba --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 ce86015a8790fe78c3fa1e0817dad1e3ce7732b16cd3bc300a77723095c4573b --- 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-b5237d8 [2022-11-22 02:19:05,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:19:05,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:19:05,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:19:05,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:19:05,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:19:05,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:19:05,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:19:05,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:19:05,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:19:05,559 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:19:05,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:19:05,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:19:05,563 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:19:05,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:19:05,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:19:05,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:19:05,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:19:05,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:19:05,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:19:05,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:19:05,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:19:05,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:19:05,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:19:05,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:19:05,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:19:05,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:19:05,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:19:05,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:19:05,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:19:05,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:19:05,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:19:05,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:19:05,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:19:05,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:19:05,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:19:05,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:19:05,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:19:05,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:19:05,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:19:05,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:19:05,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:19:05,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:19:05,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:19:05,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:19:05,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:19:05,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:19:05,651 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:19:05,651 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:19:05,651 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:19:05,651 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:19:05,652 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:19:05,653 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:19:05,653 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:19:05,653 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:19:05,653 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:19:05,654 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:19:05,654 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:19:05,654 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:19:05,654 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:19:05,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:19:05,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:19:05,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:19:05,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:19:05,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:19:05,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:19:05,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:19:05,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:19:05,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:19:05,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:19:05,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:19:05,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:05,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:19:05,658 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:19:05,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:19:05,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:19:05,659 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:19:05,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:19:05,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:19:05,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:19:05,660 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_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce86015a8790fe78c3fa1e0817dad1e3ce7732b16cd3bc300a77723095c4573b [2022-11-22 02:19:05,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:19:05,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:19:05,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:19:05,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:19:05,988 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:19:05,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 02:19:09,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:19:09,786 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:19:09,787 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 02:19:09,866 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/data/99cd4159d/4c53cbc1ca474d0bbde1368f99b7eb77/FLAG44e68bc75 [2022-11-22 02:19:09,885 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/data/99cd4159d/4c53cbc1ca474d0bbde1368f99b7eb77 [2022-11-22 02:19:09,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:19:09,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:19:09,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:09,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:19:09,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:19:09,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:09" (1/1) ... [2022-11-22 02:19:09,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b89bdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:09, skipping insertion in model container [2022-11-22 02:19:09,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:19:09" (1/1) ... [2022-11-22 02:19:09,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:19:10,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:19:14,164 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[509912,509925] [2022-11-22 02:19:14,168 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510081,510094] [2022-11-22 02:19:14,169 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510248,510261] [2022-11-22 02:19:14,169 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510416,510429] [2022-11-22 02:19:14,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:14,248 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:19:15,193 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[509912,509925] [2022-11-22 02:19:15,194 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510081,510094] [2022-11-22 02:19:15,195 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510248,510261] [2022-11-22 02:19:15,195 WARN L237 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_289e880a-083c-4b08-8828-78723bc4efd3/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i[510416,510429] [2022-11-22 02:19:15,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:19:15,403 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:19:15,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15 WrapperNode [2022-11-22 02:19:15,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:19:15,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:15,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:19:15,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:19:15,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:15,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:16,118 INFO L138 Inliner]: procedures = 487, calls = 6591, calls flagged for inlining = 235, calls inlined = 218, statements flattened = 12068 [2022-11-22 02:19:16,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:19:16,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:19:16,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:19:16,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:19:16,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:16,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:16,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:16,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:16,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:17,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:17,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:17,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:17,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:19:17,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:19:17,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:19:17,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:19:17,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (1/1) ... [2022-11-22 02:19:17,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:19:17,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:19:17,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:19:17,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_289e880a-083c-4b08-8828-78723bc4efd3/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:19:17,344 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamoff [2022-11-22 02:19:17,344 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamoff [2022-11-22 02:19:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2022-11-22 02:19:17,345 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2022-11-22 02:19:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_DISABLE___0 [2022-11-22 02:19:17,345 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_DISABLE___0 [2022-11-22 02:19:17,345 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_reqbufs [2022-11-22 02:19:17,345 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_reqbufs [2022-11-22 02:19:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:19:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:19:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2022-11-22 02:19:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2022-11-22 02:19:17,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:19:17,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:19:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2022-11-22 02:19:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2022-11-22 02:19:17,347 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2022-11-22 02:19:17,347 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2022-11-22 02:19:17,348 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_window [2022-11-22 02:19:17,348 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_window [2022-11-22 02:19:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:19:17,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-22 02:19:17,349 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:19:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:19:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_get [2022-11-22 02:19:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_get [2022-11-22 02:19:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure video_end [2022-11-22 02:19:17,350 INFO L138 BoogieDeclarations]: Found implementation of procedure video_end [2022-11-22 02:19:17,350 INFO L130 BoogieDeclarations]: Found specification of procedure arch_spin_is_locked [2022-11-22 02:19:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_spin_is_locked [2022-11-22 02:19:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2022-11-22 02:19:17,351 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2022-11-22 02:19:17,351 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2022-11-22 02:19:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2022-11-22 02:19:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2022-11-22 02:19:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_saa7146_vv_cleanup_module_9_2 [2022-11-22 02:19:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_queue [2022-11-22 02:19:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_queue [2022-11-22 02:19:17,352 INFO L130 BoogieDeclarations]: Found specification of procedure video_close [2022-11-22 02:19:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure video_close [2022-11-22 02:19:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_open [2022-11-22 02:19:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_open [2022-11-22 02:19:17,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2022-11-22 02:19:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2022-11-22 02:19:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2022-11-22 02:19:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2022-11-22 02:19:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_alloc [2022-11-22 02:19:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_alloc [2022-11-22 02:19:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_54 [2022-11-22 02:19:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_54 [2022-11-22 02:19:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-22 02:19:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-22 02:19:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2022-11-22 02:19:17,355 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2022-11-22 02:19:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-22 02:19:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-22 02:19:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_irq_done [2022-11-22 02:19:17,356 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_irq_done [2022-11-22 02:19:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2022-11-22 02:19:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2022-11-22 02:19:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2022-11-22 02:19:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2022-11-22 02:19:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:19:17,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:19:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2022-11-22 02:19:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2022-11-22 02:19:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:19:17,358 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:19:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2022-11-22 02:19:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2022-11-22 02:19:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:19:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_overlay [2022-11-22 02:19:17,359 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_overlay [2022-11-22 02:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dqbuf [2022-11-22 02:19:17,360 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dqbuf [2022-11-22 02:19:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_60 [2022-11-22 02:19:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_60 [2022-11-22 02:19:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure video_irq_done [2022-11-22 02:19:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure video_irq_done [2022-11-22 02:19:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-22 02:19:17,361 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-22 02:19:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_saa7146_dev [2022-11-22 02:19:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_saa7146_dev [2022-11-22 02:19:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_overlay [2022-11-22 02:19:17,362 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_overlay [2022-11-22 02:19:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2022-11-22 02:19:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2022-11-22 02:19:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-22 02:19:17,363 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-22 02:19:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-22 02:19:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-22 02:19:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_eliminate [2022-11-22 02:19:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_eliminate [2022-11-22 02:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2022-11-22 02:19:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2022-11-22 02:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_qbuf [2022-11-22 02:19:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_qbuf [2022-11-22 02:19:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-22 02:19:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-22 02:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:19:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure fops_read [2022-11-22 02:19:17,366 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_read [2022-11-22 02:19:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-22 02:19:17,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-22 02:19:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure release_all_pagetables [2022-11-22 02:19:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure release_all_pagetables [2022-11-22 02:19:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_finish [2022-11-22 02:19:17,372 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_finish [2022-11-22 02:19:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_set_output_format [2022-11-22 02:19:17,373 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_set_output_format [2022-11-22 02:19:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2022-11-22 02:19:17,374 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2022-11-22 02:19:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-22 02:19:17,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-22 02:19:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_stop [2022-11-22 02:19:17,380 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_stop [2022-11-22 02:19:17,380 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_res_free [2022-11-22 02:19:17,381 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_res_free [2022-11-22 02:19:17,381 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2022-11-22 02:19:17,381 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2022-11-22 02:19:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fbuf [2022-11-22 02:19:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fbuf [2022-11-22 02:19:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:19:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-22 02:19:17,382 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_free [2022-11-22 02:19:17,382 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_free [2022-11-22 02:19:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:19:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-22 02:19:17,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-22 02:19:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-22 02:19:17,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-22 02:19:17,383 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-22 02:19:17,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-22 02:19:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-22 02:19:17,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-22 02:19:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-22 02:19:17,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-22 02:19:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2022-11-22 02:19:17,384 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2022-11-22 02:19:17,384 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_pgtable_build_single [2022-11-22 02:19:17,385 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_pgtable_build_single [2022-11-22 02:19:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:19:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_s_ctrl [2022-11-22 02:19:17,385 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_s_ctrl [2022-11-22 02:19:17,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-22 02:19:17,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-22 02:19:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:19:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 02:19:17,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:19:17,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 02:19:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_queue [2022-11-22 02:19:17,387 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_queue [2022-11-22 02:19:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2022-11-22 02:19:17,387 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2022-11-22 02:19:17,387 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 02:19:17,387 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 02:19:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_streamon [2022-11-22 02:19:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_streamon [2022-11-22 02:19:17,388 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-22 02:19:17,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-22 02:19:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2022-11-22 02:19:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2022-11-22 02:19:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure video_init [2022-11-22 02:19:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure video_init [2022-11-22 02:19:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_overlay [2022-11-22 02:19:17,389 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_overlay [2022-11-22 02:19:17,389 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vbi_cap [2022-11-22 02:19:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vbi_cap [2022-11-22 02:19:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 02:19:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 02:19:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 02:19:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 02:19:17,390 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2022-11-22 02:19:17,390 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2022-11-22 02:19:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure fops_mmap [2022-11-22 02:19:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_mmap [2022-11-22 02:19:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:19:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:19:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_disable_clipping [2022-11-22 02:19:17,391 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_disable_clipping [2022-11-22 02:19:17,391 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_parm [2022-11-22 02:19:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_parm [2022-11-22 02:19:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:19:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:19:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:19:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-22 02:19:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_stop_preview [2022-11-22 02:19:17,392 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_stop_preview [2022-11-22 02:19:17,392 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 02:19:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 02:19:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_int_slock_of_saa7146_dev [2022-11-22 02:19:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_int_slock_of_saa7146_dev [2022-11-22 02:19:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_saa7146_dev [2022-11-22 02:19:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_saa7146_dev [2022-11-22 02:19:17,393 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2022-11-22 02:19:17,393 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2022-11-22 02:19:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure video_begin [2022-11-22 02:19:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure video_begin [2022-11-22 02:19:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-22 02:19:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-22 02:19:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure fops_open [2022-11-22 02:19:17,394 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_open [2022-11-22 02:19:17,394 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_init [2022-11-22 02:19:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_init [2022-11-22 02:19:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:19:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:19:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fbuf [2022-11-22 02:19:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fbuf [2022-11-22 02:19:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 02:19:17,395 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 02:19:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-22 02:19:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-22 02:19:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:19:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 02:19:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 02:19:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:19:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2022-11-22 02:19:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2022-11-22 02:19:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 02:19:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-22 02:19:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:19:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2022-11-22 02:19:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2022-11-22 02:19:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 02:19:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 02:19:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-22 02:19:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-22 02:19:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-22 02:19:17,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-22 02:19:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 02:19:17,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 02:19:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2022-11-22 02:19:17,403 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2022-11-22 02:19:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 02:19:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 02:19:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2022-11-22 02:19:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2022-11-22 02:19:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_start_preview [2022-11-22 02:19:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_start_preview [2022-11-22 02:19:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_61 [2022-11-22 02:19:17,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_61 [2022-11-22 02:19:17,406 INFO L130 BoogieDeclarations]: Found specification of procedure fops_release [2022-11-22 02:19:17,406 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_release [2022-11-22 02:19:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_querybuf [2022-11-22 02:19:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_querybuf [2022-11-22 02:19:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure SAA7146_IER_ENABLE___0 [2022-11-22 02:19:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure SAA7146_IER_ENABLE___0 [2022-11-22 02:19:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:19:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:19:17,407 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_write_out_dma [2022-11-22 02:19:17,407 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_write_out_dma [2022-11-22 02:19:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:19:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:19:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:19:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_format_by_fourcc [2022-11-22 02:19:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_format_by_fourcc [2022-11-22 02:19:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_dma_free [2022-11-22 02:19:17,408 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_dma_free [2022-11-22 02:19:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure saa7146_buffer_next [2022-11-22 02:19:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure saa7146_buffer_next [2022-11-22 02:19:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure program_capture_engine [2022-11-22 02:19:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure program_capture_engine [2022-11-22 02:19:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_close [2022-11-22 02:19:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_close [2022-11-22 02:19:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 02:19:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 02:19:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_setup [2022-11-22 02:19:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_setup [2022-11-22 02:19:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-22 02:19:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-22 02:19:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2022-11-22 02:19:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2022-11-22 02:19:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure fops_write [2022-11-22 02:19:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_write [2022-11-22 02:19:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure vbi_read [2022-11-22 02:19:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure vbi_read [2022-11-22 02:19:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:19:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 02:19:17,411 INFO L130 BoogieDeclarations]: Found specification of procedure fops_poll [2022-11-22 02:19:17,411 INFO L138 BoogieDeclarations]: Found implementation of procedure fops_poll [2022-11-22 02:19:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 02:19:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 02:19:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:19:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 02:19:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 02:19:17,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-22 02:19:17,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-22 02:19:18,946 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:19:18,959 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:19:19,336 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:20:31,076 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-22 02:20:31,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:20:34,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:20:34,509 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 02:20:34,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:20:34 BoogieIcfgContainer [2022-11-22 02:20:34,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:20:34,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:20:34,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:20:34,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:20:34,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:19:09" (1/3) ... [2022-11-22 02:20:34,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc28de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:20:34, skipping insertion in model container [2022-11-22 02:20:34,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:19:15" (2/3) ... [2022-11-22 02:20:34,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbc28de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:20:34, skipping insertion in model container [2022-11-22 02:20:34,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:20:34" (3/3) ... [2022-11-22 02:20:34,531 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-common-saa7146-saa7146_vv.cil.i [2022-11-22 02:20:34,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:20:34,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-22 02:20:34,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:20:34,673 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;@664a37b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:20:34,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-22 02:20:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 1592 states have (on average 1.329145728643216) internal successors, (2116), 1609 states have internal predecessors, (2116), 792 states have call successors, (792), 137 states have call predecessors, (792), 136 states have return successors, (783), 776 states have call predecessors, (783), 783 states have call successors, (783) [2022-11-22 02:20:34,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2022-11-22 02:20:34,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:20:34,741 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:20:34,742 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)] === [2022-11-22 02:20:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:20:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1979757743, now seen corresponding path program 1 times [2022-11-22 02:20:34,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:20:34,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579144085] [2022-11-22 02:20:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:20:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:20:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:20:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 02:20:36,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:20:36,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579144085] [2022-11-22 02:20:36,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579144085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:20:36,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:20:36,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:20:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118361313] [2022-11-22 02:20:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:20:36,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:20:36,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:20:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:20:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:20:36,574 INFO L87 Difference]: Start difference. First operand has 2523 states, 1592 states have (on average 1.329145728643216) internal successors, (2116), 1609 states have internal predecessors, (2116), 792 states have call successors, (792), 137 states have call predecessors, (792), 136 states have return successors, (783), 776 states have call predecessors, (783), 783 states have call successors, (783) Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:20:40,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:43,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:20:44,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:20:46,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:52,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:20:54,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:57,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:20:59,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:00,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:01,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:03,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:06,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:08,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:10,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:12,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:14,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:14,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:14,858 INFO L93 Difference]: Finished difference Result 7228 states and 10768 transitions. [2022-11-22 02:21:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:21:14,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 445 [2022-11-22 02:21:14,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:14,918 INFO L225 Difference]: With dead ends: 7228 [2022-11-22 02:21:14,918 INFO L226 Difference]: Without dead ends: 4779 [2022-11-22 02:21:14,937 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 [2022-11-22 02:21:14,941 INFO L413 NwaCegarLoop]: 3842 mSDtfsCounter, 3312 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 15 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3325 SdHoareTripleChecker+Valid, 6959 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:14,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3325 Valid, 6959 Invalid, 1107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 1082 Invalid, 10 Unknown, 0 Unchecked, 37.8s Time] [2022-11-22 02:21:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2022-11-22 02:21:15,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4770. [2022-11-22 02:21:15,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 3039 states have (on average 1.3254359986837776) internal successors, (4028), 3072 states have internal predecessors, (4028), 1463 states have call successors, (1463), 266 states have call predecessors, (1463), 265 states have return successors, (1469), 1445 states have call predecessors, (1469), 1459 states have call successors, (1469) [2022-11-22 02:21:15,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 6960 transitions. [2022-11-22 02:21:15,535 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 6960 transitions. Word has length 445 [2022-11-22 02:21:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 4770 states and 6960 transitions. [2022-11-22 02:21:15,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:21:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 6960 transitions. [2022-11-22 02:21:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-22 02:21:15,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:15,559 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:21:15,560 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)] === [2022-11-22 02:21:15,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:15,562 INFO L85 PathProgramCache]: Analyzing trace with hash 638808667, now seen corresponding path program 1 times [2022-11-22 02:21:15,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:15,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875750717] [2022-11-22 02:21:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:15,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:16,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 02:21:16,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:16,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875750717] [2022-11-22 02:21:16,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875750717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:16,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:16,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:21:16,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171406415] [2022-11-22 02:21:16,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:16,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:16,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:21:16,442 INFO L87 Difference]: Start difference. First operand 4770 states and 6960 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 02:21:19,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:21,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:26,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:31,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:34,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:36,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:38,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:40,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:42,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:44,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:46,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:48,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:51,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:21:53,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:21:53,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:21:53,186 INFO L93 Difference]: Finished difference Result 13965 states and 20491 transitions. [2022-11-22 02:21:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:21:53,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 451 [2022-11-22 02:21:53,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:21:53,262 INFO L225 Difference]: With dead ends: 13965 [2022-11-22 02:21:53,263 INFO L226 Difference]: Without dead ends: 9282 [2022-11-22 02:21:53,292 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 [2022-11-22 02:21:53,293 INFO L413 NwaCegarLoop]: 3862 mSDtfsCounter, 3355 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3363 SdHoareTripleChecker+Valid, 7016 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:21:53,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3363 Valid, 7016 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1035 Invalid, 10 Unknown, 0 Unchecked, 36.3s Time] [2022-11-22 02:21:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9282 states. [2022-11-22 02:21:53,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9282 to 9241. [2022-11-22 02:21:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9241 states, 5909 states have (on average 1.329158910137079) internal successors, (7854), 5975 states have internal predecessors, (7854), 2807 states have call successors, (2807), 527 states have call predecessors, (2807), 522 states have return successors, (2951), 2762 states have call predecessors, (2951), 2803 states have call successors, (2951) [2022-11-22 02:21:53,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9241 states to 9241 states and 13612 transitions. [2022-11-22 02:21:53,921 INFO L78 Accepts]: Start accepts. Automaton has 9241 states and 13612 transitions. Word has length 451 [2022-11-22 02:21:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:21:53,923 INFO L495 AbstractCegarLoop]: Abstraction has 9241 states and 13612 transitions. [2022-11-22 02:21:53,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 3 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2022-11-22 02:21:53,924 INFO L276 IsEmpty]: Start isEmpty. Operand 9241 states and 13612 transitions. [2022-11-22 02:21:53,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-22 02:21:53,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:21:53,937 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:21:53,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:21:53,938 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)] === [2022-11-22 02:21:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:21:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1796507183, now seen corresponding path program 1 times [2022-11-22 02:21:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:21:53,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496770314] [2022-11-22 02:21:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:21:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:21:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:21:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 02:21:54,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:21:54,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496770314] [2022-11-22 02:21:54,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496770314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:21:54,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:21:54,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:21:54,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107232825] [2022-11-22 02:21:54,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:21:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:21:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:21:54,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:21:54,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:21:54,754 INFO L87 Difference]: Start difference. First operand 9241 states and 13612 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:22:00,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:03,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:05,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:07,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:10,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:13,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:16,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:18,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:20,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:23,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:25,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:27,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:29,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:30,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:32,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:34,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:22:34,932 INFO L93 Difference]: Finished difference Result 22634 states and 33299 transitions. [2022-11-22 02:22:34,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:22:34,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 463 [2022-11-22 02:22:34,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:22:35,041 INFO L225 Difference]: With dead ends: 22634 [2022-11-22 02:22:35,042 INFO L226 Difference]: Without dead ends: 13480 [2022-11-22 02:22:35,097 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 [2022-11-22 02:22:35,098 INFO L413 NwaCegarLoop]: 3793 mSDtfsCounter, 3256 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 13 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3268 SdHoareTripleChecker+Valid, 6880 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:22:35,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3268 Valid, 6880 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1081 Invalid, 12 Unknown, 0 Unchecked, 39.6s Time] [2022-11-22 02:22:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2022-11-22 02:22:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 13419. [2022-11-22 02:22:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13419 states, 8634 states have (on average 1.3291637711373638) internal successors, (11476), 8733 states have internal predecessors, (11476), 3997 states have call successors, (3997), 792 states have call predecessors, (3997), 785 states have return successors, (4223), 3925 states have call predecessors, (4223), 3993 states have call successors, (4223) [2022-11-22 02:22:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13419 states to 13419 states and 19696 transitions. [2022-11-22 02:22:35,961 INFO L78 Accepts]: Start accepts. Automaton has 13419 states and 19696 transitions. Word has length 463 [2022-11-22 02:22:35,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:22:35,963 INFO L495 AbstractCegarLoop]: Abstraction has 13419 states and 19696 transitions. [2022-11-22 02:22:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:22:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 13419 states and 19696 transitions. [2022-11-22 02:22:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2022-11-22 02:22:35,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:22:35,976 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:22:35,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:22:35,977 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)] === [2022-11-22 02:22:35,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:22:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1098611497, now seen corresponding path program 1 times [2022-11-22 02:22:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:22:35,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595356452] [2022-11-22 02:22:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:22:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:22:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:22:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 02:22:36,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:22:36,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595356452] [2022-11-22 02:22:36,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595356452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:22:36,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:22:36,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:22:36,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072874488] [2022-11-22 02:22:36,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:22:36,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:22:36,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:22:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:22:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:22:36,640 INFO L87 Difference]: Start difference. First operand 13419 states and 19696 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:22:40,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:42,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:45,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:47,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:52,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:22:57,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:22:59,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:01,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:03,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:06,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:08,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:10,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:12,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:12,207 INFO L93 Difference]: Finished difference Result 34673 states and 50787 transitions. [2022-11-22 02:23:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:23:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) Word has length 469 [2022-11-22 02:23:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:12,340 INFO L225 Difference]: With dead ends: 34673 [2022-11-22 02:23:12,340 INFO L226 Difference]: Without dead ends: 21341 [2022-11-22 02:23:12,405 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 [2022-11-22 02:23:12,406 INFO L413 NwaCegarLoop]: 4330 mSDtfsCounter, 3156 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 13 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:12,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3169 Valid, 7418 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1209 Invalid, 11 Unknown, 0 Unchecked, 34.7s Time] [2022-11-22 02:23:12,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21341 states. [2022-11-22 02:23:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21341 to 21297. [2022-11-22 02:23:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21297 states, 13804 states have (on average 1.3310634598667053) internal successors, (18374), 13969 states have internal predecessors, (18374), 6207 states have call successors, (6207), 1294 states have call predecessors, (6207), 1283 states have return successors, (6527), 6081 states have call predecessors, (6527), 6203 states have call successors, (6527) [2022-11-22 02:23:13,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21297 states to 21297 states and 31108 transitions. [2022-11-22 02:23:13,946 INFO L78 Accepts]: Start accepts. Automaton has 21297 states and 31108 transitions. Word has length 469 [2022-11-22 02:23:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:13,947 INFO L495 AbstractCegarLoop]: Abstraction has 21297 states and 31108 transitions. [2022-11-22 02:23:13,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (46), 3 states have call predecessors, (46), 3 states have call successors, (46) [2022-11-22 02:23:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 21297 states and 31108 transitions. [2022-11-22 02:23:13,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2022-11-22 02:23:13,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:13,962 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:13,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:23:13,962 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:23:13,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1636567622, now seen corresponding path program 1 times [2022-11-22 02:23:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:13,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706760419] [2022-11-22 02:23:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:13,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7492 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7492 trivial. 0 not checked. [2022-11-22 02:23:15,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706760419] [2022-11-22 02:23:15,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706760419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:23:15,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:23:15,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:23:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341379315] [2022-11-22 02:23:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:15,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:23:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:23:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:23:15,591 INFO L87 Difference]: Start difference. First operand 21297 states and 31108 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:23:18,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:21,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:24,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:26,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:28,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:32,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:34,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:36,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:38,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:41,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:43,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:46,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:48,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:50,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:52,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:54,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:23:56,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:23:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:56,621 INFO L93 Difference]: Finished difference Result 21395 states and 31260 transitions. [2022-11-22 02:23:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:23:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 479 [2022-11-22 02:23:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:56,718 INFO L225 Difference]: With dead ends: 21395 [2022-11-22 02:23:56,718 INFO L226 Difference]: Without dead ends: 21393 [2022-11-22 02:23:56,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:23:56,729 INFO L413 NwaCegarLoop]: 3142 mSDtfsCounter, 3466 mSDsluCounter, 6422 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3484 SdHoareTripleChecker+Valid, 9564 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:56,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3484 Valid, 9564 Invalid, 1603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1592 Invalid, 10 Unknown, 0 Unchecked, 40.2s Time] [2022-11-22 02:23:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21393 states. [2022-11-22 02:23:58,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21393 to 21369. [2022-11-22 02:23:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21369 states, 13847 states have (on average 1.330396475770925) internal successors, (18422), 14014 states have internal predecessors, (18422), 6223 states have call successors, (6223), 1305 states have call predecessors, (6223), 1296 states have return successors, (6577), 6097 states have call predecessors, (6577), 6219 states have call successors, (6577) [2022-11-22 02:23:58,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21369 states to 21369 states and 31222 transitions. [2022-11-22 02:23:58,240 INFO L78 Accepts]: Start accepts. Automaton has 21369 states and 31222 transitions. Word has length 479 [2022-11-22 02:23:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:58,241 INFO L495 AbstractCegarLoop]: Abstraction has 21369 states and 31222 transitions. [2022-11-22 02:23:58,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-22 02:23:58,242 INFO L276 IsEmpty]: Start isEmpty. Operand 21369 states and 31222 transitions. [2022-11-22 02:23:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-22 02:23:58,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:58,258 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:58,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:23:58,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:23:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1854446163, now seen corresponding path program 1 times [2022-11-22 02:23:58,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198020440] [2022-11-22 02:23:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:00,079 INFO L134 CoverageAnalysis]: Checked inductivity of 7494 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7492 trivial. 0 not checked. [2022-11-22 02:24:00,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:00,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198020440] [2022-11-22 02:24:00,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198020440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:00,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:00,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:24:00,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491411399] [2022-11-22 02:24:00,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:00,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:24:00,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:00,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:24:00,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:24:00,082 INFO L87 Difference]: Start difference. First operand 21369 states and 31222 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 02:24:03,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:08,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:11,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:14,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:17,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:19,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:21,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:25,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:27,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:29,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:32,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:34,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:36,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:39,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:41,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:44,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:46,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:24:48,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:50,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:52,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:54,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:56,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:24:58,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:00,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:00,319 INFO L93 Difference]: Finished difference Result 22376 states and 32660 transitions. [2022-11-22 02:25:00,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:25:00,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 484 [2022-11-22 02:25:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:00,447 INFO L225 Difference]: With dead ends: 22376 [2022-11-22 02:25:00,447 INFO L226 Difference]: Without dead ends: 22374 [2022-11-22 02:25:00,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:25:00,467 INFO L413 NwaCegarLoop]: 3303 mSDtfsCounter, 3411 mSDsluCounter, 7026 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 1 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 10329 SdHoareTripleChecker+Invalid, 1749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:00,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3433 Valid, 10329 Invalid, 1749 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1731 Invalid, 17 Unknown, 0 Unchecked, 59.4s Time] [2022-11-22 02:25:00,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22374 states. [2022-11-22 02:25:02,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22374 to 22308. [2022-11-22 02:25:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22308 states, 14487 states have (on average 1.3296748809277283) internal successors, (19263), 14668 states have internal predecessors, (19263), 6462 states have call successors, (6462), 1361 states have call predecessors, (6462), 1356 states have return successors, (6832), 6326 states have call predecessors, (6832), 6458 states have call successors, (6832) [2022-11-22 02:25:02,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22308 states to 22308 states and 32557 transitions. [2022-11-22 02:25:02,213 INFO L78 Accepts]: Start accepts. Automaton has 22308 states and 32557 transitions. Word has length 484 [2022-11-22 02:25:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:02,214 INFO L495 AbstractCegarLoop]: Abstraction has 22308 states and 32557 transitions. [2022-11-22 02:25:02,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-22 02:25:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 22308 states and 32557 transitions. [2022-11-22 02:25:02,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2022-11-22 02:25:02,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:02,224 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:02,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:25:02,225 INFO L420 AbstractCegarLoop]: === Iteration 7 === 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)] === [2022-11-22 02:25:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:02,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1995499921, now seen corresponding path program 1 times [2022-11-22 02:25:02,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:02,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209908014] [2022-11-22 02:25:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:03,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7312 trivial. 0 not checked. [2022-11-22 02:25:03,240 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:03,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209908014] [2022-11-22 02:25:03,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209908014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:03,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:03,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:25:03,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053238196] [2022-11-22 02:25:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:03,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:25:03,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:03,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:25:03,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:25:03,243 INFO L87 Difference]: Start difference. First operand 22308 states and 32557 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 02:25:05,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:08,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:15,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:17,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:21,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:24,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:27,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:29,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:31,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:33,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:35,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:25:37,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:37,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:37,379 INFO L93 Difference]: Finished difference Result 60444 states and 88248 transitions. [2022-11-22 02:25:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:25:37,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 487 [2022-11-22 02:25:37,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:37,578 INFO L225 Difference]: With dead ends: 60444 [2022-11-22 02:25:37,578 INFO L226 Difference]: Without dead ends: 38223 [2022-11-22 02:25:37,667 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 [2022-11-22 02:25:37,668 INFO L413 NwaCegarLoop]: 4084 mSDtfsCounter, 3150 mSDsluCounter, 3109 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 7 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3162 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:37,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3162 Valid, 7193 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1114 Invalid, 11 Unknown, 0 Unchecked, 32.6s Time] [2022-11-22 02:25:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38223 states. [2022-11-22 02:25:39,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38223 to 38151. [2022-11-22 02:25:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38151 states, 24646 states have (on average 1.3262192647894182) internal successors, (32686), 24976 states have internal predecessors, (32686), 11158 states have call successors, (11158), 2357 states have call predecessors, (11158), 2344 states have return successors, (11844), 10895 states have call predecessors, (11844), 11154 states have call successors, (11844) [2022-11-22 02:25:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38151 states to 38151 states and 55688 transitions. [2022-11-22 02:25:40,089 INFO L78 Accepts]: Start accepts. Automaton has 38151 states and 55688 transitions. Word has length 487 [2022-11-22 02:25:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:40,090 INFO L495 AbstractCegarLoop]: Abstraction has 38151 states and 55688 transitions. [2022-11-22 02:25:40,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2022-11-22 02:25:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 38151 states and 55688 transitions. [2022-11-22 02:25:40,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2022-11-22 02:25:40,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:40,098 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:40,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:25:40,099 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)] === [2022-11-22 02:25:40,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:40,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1608675476, now seen corresponding path program 1 times [2022-11-22 02:25:40,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:40,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979906315] [2022-11-22 02:25:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:40,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:41,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7501 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7497 trivial. 0 not checked. [2022-11-22 02:25:41,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:41,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979906315] [2022-11-22 02:25:41,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979906315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:41,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:41,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:25:41,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352950474] [2022-11-22 02:25:41,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:41,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:25:41,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:41,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:25:41,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:25:41,372 INFO L87 Difference]: Start difference. First operand 38151 states and 55688 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 02:25:42,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:44,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:47,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:49,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:51,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:53,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:25:57,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:02,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:05,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:08,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:10,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:12,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:14,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:17,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:19,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:22,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:23,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:28,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:30,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:32,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:34,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:36,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:38,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:40,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:26:41,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:41,933 INFO L93 Difference]: Finished difference Result 73714 states and 108847 transitions. [2022-11-22 02:26:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:26:41,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 490 [2022-11-22 02:26:41,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:42,316 INFO L225 Difference]: With dead ends: 73714 [2022-11-22 02:26:42,317 INFO L226 Difference]: Without dead ends: 73712 [2022-11-22 02:26:42,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:26:42,354 INFO L413 NwaCegarLoop]: 3853 mSDtfsCounter, 3385 mSDsluCounter, 10613 mSDsCounter, 0 mSdLazyCounter, 2074 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 14466 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2074 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:42,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3402 Valid, 14466 Invalid, 2091 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2074 Invalid, 14 Unknown, 0 Unchecked, 57.5s Time] [2022-11-22 02:26:42,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73712 states. [2022-11-22 02:26:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73712 to 73642. [2022-11-22 02:26:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73642 states, 47814 states have (on average 1.3326640732839754) internal successors, (63720), 48535 states have internal predecessors, (63720), 21275 states have call successors, (21275), 4638 states have call predecessors, (21275), 4550 states have return successors, (23783), 20597 states have call predecessors, (23783), 21267 states have call successors, (23783) [2022-11-22 02:26:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73642 states to 73642 states and 108778 transitions. [2022-11-22 02:26:46,974 INFO L78 Accepts]: Start accepts. Automaton has 73642 states and 108778 transitions. Word has length 490 [2022-11-22 02:26:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:46,975 INFO L495 AbstractCegarLoop]: Abstraction has 73642 states and 108778 transitions. [2022-11-22 02:26:46,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2022-11-22 02:26:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 73642 states and 108778 transitions. [2022-11-22 02:26:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2022-11-22 02:26:46,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:46,986 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:46,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:26:46,987 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)] === [2022-11-22 02:26:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:46,987 INFO L85 PathProgramCache]: Analyzing trace with hash 89196345, now seen corresponding path program 1 times [2022-11-22 02:26:46,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:46,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391804074] [2022-11-22 02:26:46,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:46,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:48,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7511 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7505 trivial. 0 not checked. [2022-11-22 02:26:48,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:48,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391804074] [2022-11-22 02:26:48,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391804074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:48,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:26:48,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:26:48,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830652082] [2022-11-22 02:26:48,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:48,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:26:48,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:48,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:26:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:26:48,982 INFO L87 Difference]: Start difference. First operand 73642 states and 108778 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-22 02:26:51,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:57,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:26:59,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:01,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:10,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:13,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:16,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:19,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:21,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:23,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:25,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:27,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:29,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:31,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:31,472 INFO L93 Difference]: Finished difference Result 73816 states and 108987 transitions. [2022-11-22 02:27:31,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:27:31,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 495 [2022-11-22 02:27:31,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:31,858 INFO L225 Difference]: With dead ends: 73816 [2022-11-22 02:27:31,858 INFO L226 Difference]: Without dead ends: 73814 [2022-11-22 02:27:31,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:27:31,893 INFO L413 NwaCegarLoop]: 3166 mSDtfsCounter, 3388 mSDsluCounter, 6511 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3403 SdHoareTripleChecker+Valid, 9677 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:31,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3403 Valid, 9677 Invalid, 1616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1606 Invalid, 9 Unknown, 0 Unchecked, 38.9s Time] [2022-11-22 02:27:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73814 states. [2022-11-22 02:27:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73814 to 73796. [2022-11-22 02:27:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73796 states, 47899 states have (on average 1.332199002066849) internal successors, (63811), 48625 states have internal predecessors, (63811), 21313 states have call successors, (21313), 4664 states have call predecessors, (21313), 4581 states have return successors, (23836), 20635 states have call predecessors, (23836), 21305 states have call successors, (23836) [2022-11-22 02:27:37,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73796 states to 73796 states and 108960 transitions. [2022-11-22 02:27:37,932 INFO L78 Accepts]: Start accepts. Automaton has 73796 states and 108960 transitions. Word has length 495 [2022-11-22 02:27:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:37,933 INFO L495 AbstractCegarLoop]: Abstraction has 73796 states and 108960 transitions. [2022-11-22 02:27:37,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2022-11-22 02:27:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 73796 states and 108960 transitions. [2022-11-22 02:27:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2022-11-22 02:27:37,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:37,946 INFO L195 NwaCegarLoop]: trace histogram [46, 43, 43, 43, 43, 43, 43, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:37,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:27:37,946 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)] === [2022-11-22 02:27:37,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:37,947 INFO L85 PathProgramCache]: Analyzing trace with hash 315886714, now seen corresponding path program 1 times [2022-11-22 02:27:37,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:37,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132745377] [2022-11-22 02:27:37,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:37,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7524 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7516 trivial. 0 not checked. [2022-11-22 02:27:39,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132745377] [2022-11-22 02:27:39,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132745377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:39,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:27:39,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:27:39,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214646892] [2022-11-22 02:27:39,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:39,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:27:39,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:39,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:27:39,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:27:39,512 INFO L87 Difference]: Start difference. First operand 73796 states and 108960 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:27:41,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:48,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:27:51,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:56,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:27:58,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:02,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:04,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:05,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:07,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:09,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:12,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:14,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:16,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:18,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:20,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:22,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:23,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:28:23,810 INFO L93 Difference]: Finished difference Result 74022 states and 109269 transitions. [2022-11-22 02:28:23,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:28:23,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 499 [2022-11-22 02:28:23,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:28:24,178 INFO L225 Difference]: With dead ends: 74022 [2022-11-22 02:28:24,178 INFO L226 Difference]: Without dead ends: 74020 [2022-11-22 02:28:24,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:28:24,201 INFO L413 NwaCegarLoop]: 3260 mSDtfsCounter, 3349 mSDsluCounter, 6940 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3366 SdHoareTripleChecker+Valid, 10200 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:28:24,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3366 Valid, 10200 Invalid, 1716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1705 Invalid, 10 Unknown, 0 Unchecked, 41.3s Time] [2022-11-22 02:28:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74020 states. [2022-11-22 02:28:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74020 to 73996. [2022-11-22 02:28:28,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73996 states, 48041 states have (on average 1.332216231968527) internal successors, (64001), 48775 states have internal predecessors, (64001), 21361 states have call successors, (21361), 4674 states have call predecessors, (21361), 4591 states have return successors, (23868), 20675 states have call predecessors, (23868), 21353 states have call successors, (23868) [2022-11-22 02:28:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73996 states to 73996 states and 109230 transitions. [2022-11-22 02:28:28,899 INFO L78 Accepts]: Start accepts. Automaton has 73996 states and 109230 transitions. Word has length 499 [2022-11-22 02:28:28,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:28:28,899 INFO L495 AbstractCegarLoop]: Abstraction has 73996 states and 109230 transitions. [2022-11-22 02:28:28,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-22 02:28:28,900 INFO L276 IsEmpty]: Start isEmpty. Operand 73996 states and 109230 transitions. [2022-11-22 02:28:28,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-22 02:28:28,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:28:28,908 INFO L195 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:28:28,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:28:28,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2022-11-22 02:28:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:28:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 786076793, now seen corresponding path program 1 times [2022-11-22 02:28:28,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:28:28,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372639824] [2022-11-22 02:28:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:28:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:28:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:28:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7310 trivial. 0 not checked. [2022-11-22 02:28:29,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:28:29,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372639824] [2022-11-22 02:28:29,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372639824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:28:29,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:28:29,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:28:29,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644358166] [2022-11-22 02:28:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:28:29,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:28:29,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:28:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:28:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:28:29,825 INFO L87 Difference]: Start difference. First operand 73996 states and 109230 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-22 02:28:36,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:38,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:41,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:43,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:28:49,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:52,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:54,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:28:56,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:00,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:29:02,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:05,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:29:07,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:29:09,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:29:11,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:29:14,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:29:14,230 INFO L93 Difference]: Finished difference Result 203071 states and 298655 transitions. [2022-11-22 02:29:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:29:14,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 492 [2022-11-22 02:29:14,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:29:14,847 INFO L225 Difference]: With dead ends: 203071 [2022-11-22 02:29:14,848 INFO L226 Difference]: Without dead ends: 129162 [2022-11-22 02:29:15,280 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 [2022-11-22 02:29:15,280 INFO L413 NwaCegarLoop]: 3968 mSDtfsCounter, 2917 mSDsluCounter, 3065 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 7 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2927 SdHoareTripleChecker+Valid, 7033 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:29:15,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2927 Valid, 7033 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1142 Invalid, 10 Unknown, 0 Unchecked, 37.9s Time] [2022-11-22 02:29:15,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129162 states.