./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:47:51,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:47:51,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:47:51,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:47:51,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:47:51,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:47:51,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:47:51,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:47:51,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:47:51,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:47:51,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:47:51,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:47:51,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:47:51,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:47:51,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:47:51,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:47:51,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:47:51,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:47:51,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:47:51,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:47:51,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:47:51,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:47:51,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:47:51,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:47:51,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:47:51,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:47:51,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:47:51,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:47:51,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:47:51,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:47:51,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:47:51,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:47:51,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:47:51,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:47:51,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:47:51,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:47:51,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:47:51,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:47:51,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:47:51,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:47:51,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:47:51,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:47:51,522 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:47:51,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:47:51,526 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:47:51,526 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:47:51,527 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:47:51,527 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:47:51,528 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:47:51,528 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:47:51,528 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:47:51,528 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:47:51,529 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:47:51,530 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:47:51,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:47:51,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:47:51,530 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:47:51,531 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:47:51,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:47:51,531 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:47:51,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:47:51,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:47:51,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:47:51,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:47:51,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:47:51,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:47:51,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:47:51,537 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:47:51,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:47:51,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:47:51,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:47:51,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:47:51,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:47:51,540 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:47:51,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:47:51,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:47:51,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:47:51,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:47:51,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:47:51,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:47:51,542 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_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2022-11-03 02:47:51,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:47:51,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:47:51,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:47:51,822 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:47:51,823 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:47:51,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-03 02:47:51,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/data/0ab48f02d/8d63eb57e6074390a67c75a0ce868536/FLAGfa5d38bd1 [2022-11-03 02:47:52,837 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:47:52,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-03 02:47:52,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/data/0ab48f02d/8d63eb57e6074390a67c75a0ce868536/FLAGfa5d38bd1 [2022-11-03 02:47:53,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/data/0ab48f02d/8d63eb57e6074390a67c75a0ce868536 [2022-11-03 02:47:53,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:47:53,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:47:53,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:47:53,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:47:53,189 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:47:53,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:53" (1/1) ... [2022-11-03 02:47:53,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e509656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:53, skipping insertion in model container [2022-11-03 02:47:53,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:47:53" (1/1) ... [2022-11-03 02:47:53,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:47:53,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:47:58,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2022-11-03 02:47:58,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2022-11-03 02:47:58,697 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2022-11-03 02:47:58,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2022-11-03 02:47:58,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:47:58,774 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:47:59,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2022-11-03 02:47:59,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2022-11-03 02:47:59,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2022-11-03 02:47:59,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2022-11-03 02:47:59,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:47:59,703 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:47:59,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59 WrapperNode [2022-11-03 02:47:59,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:47:59,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:47:59,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:47:59,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:47:59,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:47:59,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,354 INFO L138 Inliner]: procedures = 676, calls = 4210, calls flagged for inlining = 325, calls inlined = 302, statements flattened = 10119 [2022-11-03 02:48:00,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:00,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:48:00,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:48:00,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:48:00,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:48:00,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:48:00,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:48:00,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:48:00,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (1/1) ... [2022-11-03 02:48:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:00,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:00,867 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:48:00,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:48:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:48:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:48:00,907 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2022-11-03 02:48:00,907 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2022-11-03 02:48:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2022-11-03 02:48:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2022-11-03 02:48:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2022-11-03 02:48:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2022-11-03 02:48:00,908 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-03 02:48:00,908 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-03 02:48:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:48:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:48:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2022-11-03 02:48:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2022-11-03 02:48:00,909 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2022-11-03 02:48:00,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2022-11-03 02:48:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:48:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:48:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2022-11-03 02:48:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2022-11-03 02:48:00,910 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2022-11-03 02:48:00,910 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2022-11-03 02:48:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-11-03 02:48:00,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-11-03 02:48:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2022-11-03 02:48:00,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2022-11-03 02:48:00,911 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-11-03 02:48:00,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-11-03 02:48:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:48:00,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-11-03 02:48:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2022-11-03 02:48:00,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2022-11-03 02:48:00,912 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2022-11-03 02:48:00,912 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2022-11-03 02:48:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-11-03 02:48:00,913 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-11-03 02:48:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-11-03 02:48:00,913 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-11-03 02:48:00,913 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2022-11-03 02:48:00,913 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2022-11-03 02:48:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-11-03 02:48:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-11-03 02:48:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:48:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:48:00,914 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2022-11-03 02:48:00,914 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2022-11-03 02:48:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2022-11-03 02:48:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2022-11-03 02:48:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2022-11-03 02:48:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2022-11-03 02:48:00,915 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2022-11-03 02:48:00,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2022-11-03 02:48:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2022-11-03 02:48:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2022-11-03 02:48:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2022-11-03 02:48:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2022-11-03 02:48:00,916 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2022-11-03 02:48:00,916 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2022-11-03 02:48:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2022-11-03 02:48:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2022-11-03 02:48:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2022-11-03 02:48:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2022-11-03 02:48:00,917 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2022-11-03 02:48:00,917 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2022-11-03 02:48:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2022-11-03 02:48:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2022-11-03 02:48:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-03 02:48:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-03 02:48:00,918 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-03 02:48:00,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-03 02:48:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2022-11-03 02:48:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2022-11-03 02:48:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-11-03 02:48:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-11-03 02:48:00,919 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-11-03 02:48:00,919 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-11-03 02:48:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2022-11-03 02:48:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2022-11-03 02:48:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 02:48:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 02:48:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-03 02:48:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-03 02:48:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:48:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:48:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:48:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:48:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2022-11-03 02:48:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2022-11-03 02:48:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:48:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2022-11-03 02:48:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2022-11-03 02:48:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2022-11-03 02:48:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2022-11-03 02:48:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2022-11-03 02:48:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2022-11-03 02:48:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:48:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:48:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-11-03 02:48:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-11-03 02:48:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2022-11-03 02:48:00,923 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2022-11-03 02:48:00,923 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2022-11-03 02:48:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2022-11-03 02:48:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:48:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:48:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2022-11-03 02:48:00,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2022-11-03 02:48:00,924 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:48:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:48:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:48:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2022-11-03 02:48:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2022-11-03 02:48:00,925 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2022-11-03 02:48:00,925 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2022-11-03 02:48:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-03 02:48:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-03 02:48:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2022-11-03 02:48:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2022-11-03 02:48:00,926 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2022-11-03 02:48:00,926 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2022-11-03 02:48:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:48:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:48:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:48:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-03 02:48:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-03 02:48:00,927 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2022-11-03 02:48:00,927 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2022-11-03 02:48:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:48:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:48:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:48:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2022-11-03 02:48:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2022-11-03 02:48:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-11-03 02:48:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-11-03 02:48:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-03 02:48:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-03 02:48:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-03 02:48:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-03 02:48:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-03 02:48:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-03 02:48:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:48:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2022-11-03 02:48:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2022-11-03 02:48:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2022-11-03 02:48:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2022-11-03 02:48:00,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2022-11-03 02:48:00,930 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-03 02:48:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-03 02:48:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-03 02:48:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-03 02:48:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:48:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-11-03 02:48:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-11-03 02:48:00,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-11-03 02:48:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:48:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2022-11-03 02:48:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2022-11-03 02:48:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:48:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2022-11-03 02:48:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2022-11-03 02:48:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 02:48:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 02:48:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:48:00,933 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:48:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:48:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:48:00,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:48:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-03 02:48:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2022-11-03 02:48:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2022-11-03 02:48:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2022-11-03 02:48:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2022-11-03 02:48:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2022-11-03 02:48:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2022-11-03 02:48:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2022-11-03 02:48:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2022-11-03 02:48:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-03 02:48:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-03 02:48:00,935 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:48:00,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2022-11-03 02:48:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:48:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:48:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2022-11-03 02:48:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2022-11-03 02:48:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-11-03 02:48:00,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-11-03 02:48:00,936 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-03 02:48:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-03 02:48:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:48:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:48:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-11-03 02:48:00,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-11-03 02:48:00,937 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2022-11-03 02:48:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2022-11-03 02:48:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-03 02:48:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-03 02:48:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-03 02:48:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-03 02:48:00,938 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2022-11-03 02:48:00,938 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2022-11-03 02:48:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2022-11-03 02:48:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2022-11-03 02:48:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:48:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:48:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2022-11-03 02:48:00,939 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2022-11-03 02:48:00,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:48:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:48:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:48:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:48:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:48:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-11-03 02:48:00,940 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-03 02:48:00,940 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-03 02:48:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2022-11-03 02:48:00,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2022-11-03 02:48:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-11-03 02:48:00,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-11-03 02:48:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2022-11-03 02:48:00,941 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2022-11-03 02:48:00,941 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:48:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:48:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2022-11-03 02:48:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2022-11-03 02:48:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2022-11-03 02:48:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2022-11-03 02:48:00,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2022-11-03 02:48:00,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2022-11-03 02:48:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2022-11-03 02:48:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2022-11-03 02:48:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2022-11-03 02:48:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2022-11-03 02:48:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-03 02:48:00,943 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-03 02:48:00,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:48:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:48:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:48:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:48:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-11-03 02:48:00,944 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-11-03 02:48:00,944 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2022-11-03 02:48:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2022-11-03 02:48:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2022-11-03 02:48:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2022-11-03 02:48:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2022-11-03 02:48:00,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2022-11-03 02:48:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:48:00,945 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:48:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:48:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2022-11-03 02:48:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2022-11-03 02:48:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:48:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2022-11-03 02:48:00,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2022-11-03 02:48:00,946 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2022-11-03 02:48:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2022-11-03 02:48:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:48:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2022-11-03 02:48:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2022-11-03 02:48:00,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2022-11-03 02:48:00,947 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 02:48:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 02:48:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2022-11-03 02:48:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2022-11-03 02:48:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:48:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 02:48:00,948 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 02:48:00,948 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2022-11-03 02:48:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2022-11-03 02:48:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:48:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:48:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:48:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:48:00,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-03 02:48:00,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-03 02:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2022-11-03 02:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2022-11-03 02:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2022-11-03 02:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2022-11-03 02:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2022-11-03 02:48:00,950 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2022-11-03 02:48:00,950 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-03 02:48:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-03 02:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2022-11-03 02:48:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2022-11-03 02:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2022-11-03 02:48:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2022-11-03 02:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2022-11-03 02:48:00,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2022-11-03 02:48:00,951 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:48:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:48:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2022-11-03 02:48:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2022-11-03 02:48:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-03 02:48:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-03 02:48:00,952 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2022-11-03 02:48:00,952 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2022-11-03 02:48:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:48:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:48:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2022-11-03 02:48:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2022-11-03 02:48:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2022-11-03 02:48:00,953 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2022-11-03 02:48:00,953 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2022-11-03 02:48:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2022-11-03 02:48:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2022-11-03 02:48:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2022-11-03 02:48:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:48:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:48:00,954 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2022-11-03 02:48:00,954 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2022-11-03 02:48:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:48:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:48:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2022-11-03 02:48:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2022-11-03 02:48:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:48:00,955 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:48:00,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:48:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2022-11-03 02:48:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2022-11-03 02:48:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2022-11-03 02:48:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2022-11-03 02:48:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2022-11-03 02:48:00,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2022-11-03 02:48:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-03 02:48:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-03 02:48:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2022-11-03 02:48:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2022-11-03 02:48:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2022-11-03 02:48:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2022-11-03 02:48:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2022-11-03 02:48:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2022-11-03 02:48:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-03 02:48:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-03 02:48:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2022-11-03 02:48:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2022-11-03 02:48:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-03 02:48:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-03 02:48:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-11-03 02:48:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-11-03 02:48:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-11-03 02:48:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-11-03 02:48:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2022-11-03 02:48:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2022-11-03 02:48:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2022-11-03 02:48:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2022-11-03 02:48:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:48:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:48:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2022-11-03 02:48:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2022-11-03 02:48:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-03 02:48:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-03 02:48:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2022-11-03 02:48:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2022-11-03 02:48:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:48:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-03 02:48:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-03 02:48:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-11-03 02:48:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-11-03 02:48:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2022-11-03 02:48:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2022-11-03 02:48:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2022-11-03 02:48:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2022-11-03 02:48:02,295 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:48:02,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:48:02,734 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:51:35,705 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:51:42,466 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:51:42,467 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-03 02:51:42,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:42 BoogieIcfgContainer [2022-11-03 02:51:42,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:51:42,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:51:42,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:51:42,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:51:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:47:53" (1/3) ... [2022-11-03 02:51:42,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b09b95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:42, skipping insertion in model container [2022-11-03 02:51:42,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:47:59" (2/3) ... [2022-11-03 02:51:42,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b09b95f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:42, skipping insertion in model container [2022-11-03 02:51:42,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:42" (3/3) ... [2022-11-03 02:51:42,496 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2022-11-03 02:51:42,522 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:51:42,523 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-03 02:51:42,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:51:42,705 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;@2c4971c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:51:42,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-03 02:51:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 2825 states, 1584 states have (on average 1.2613636363636365) internal successors, (1998), 1665 states have internal predecessors, (1998), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) [2022-11-03 02:51:42,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:51:42,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:42,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:42,740 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)] === [2022-11-03 02:51:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash -2057746181, now seen corresponding path program 1 times [2022-11-03 02:51:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092220398] [2022-11-03 02:51:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:42,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:51:45,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:45,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092220398] [2022-11-03 02:51:45,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092220398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:45,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:45,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:51:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448205509] [2022-11-03 02:51:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:51:45,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:51:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:51:45,861 INFO L87 Difference]: Start difference. First operand has 2825 states, 1584 states have (on average 1.2613636363636365) internal successors, (1998), 1665 states have internal predecessors, (1998), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:51:48,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:00,061 INFO L93 Difference]: Finished difference Result 7966 states and 12094 transitions. [2022-11-03 02:52:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:00,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2022-11-03 02:52:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:00,124 INFO L225 Difference]: With dead ends: 7966 [2022-11-03 02:52:00,124 INFO L226 Difference]: Without dead ends: 5144 [2022-11-03 02:52:00,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:00,159 INFO L413 NwaCegarLoop]: 4699 mSDtfsCounter, 3948 mSDsluCounter, 13811 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3967 SdHoareTripleChecker+Valid, 17323 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:00,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3967 Valid, 17323 Invalid, 1630 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1626 Invalid, 1 Unknown, 0 Unchecked, 13.4s Time] [2022-11-03 02:52:00,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2022-11-03 02:52:01,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5136. [2022-11-03 02:52:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5136 states, 2870 states have (on average 1.2571428571428571) internal successors, (3608), 3025 states have internal predecessors, (3608), 1936 states have call successors, (1936), 336 states have call predecessors, (1936), 327 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:52:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5136 states to 5136 states and 7558 transitions. [2022-11-03 02:52:01,097 INFO L78 Accepts]: Start accepts. Automaton has 5136 states and 7558 transitions. Word has length 35 [2022-11-03 02:52:01,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:01,098 INFO L495 AbstractCegarLoop]: Abstraction has 5136 states and 7558 transitions. [2022-11-03 02:52:01,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 02:52:01,099 INFO L276 IsEmpty]: Start isEmpty. Operand 5136 states and 7558 transitions. [2022-11-03 02:52:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-03 02:52:01,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:01,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:01,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:52:01,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:01,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:01,105 INFO L85 PathProgramCache]: Analyzing trace with hash 859194012, now seen corresponding path program 1 times [2022-11-03 02:52:01,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:01,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262253318] [2022-11-03 02:52:01,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:01,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 02:52:03,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:03,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262253318] [2022-11-03 02:52:03,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262253318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:03,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:03,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:03,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662244587] [2022-11-03 02:52:03,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:03,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:03,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:03,161 INFO L87 Difference]: Start difference. First operand 5136 states and 7558 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:52:05,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:13,999 INFO L93 Difference]: Finished difference Result 5146 states and 7567 transitions. [2022-11-03 02:52:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 40 [2022-11-03 02:52:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:14,042 INFO L225 Difference]: With dead ends: 5146 [2022-11-03 02:52:14,042 INFO L226 Difference]: Without dead ends: 5144 [2022-11-03 02:52:14,048 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 [2022-11-03 02:52:14,049 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4091 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:14,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4091 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:52:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2022-11-03 02:52:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 5144. [2022-11-03 02:52:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 2876 states have (on average 1.256606397774687) internal successors, (3614), 3031 states have internal predecessors, (3614), 1936 states have call successors, (1936), 338 states have call predecessors, (1936), 329 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:52:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 7564 transitions. [2022-11-03 02:52:14,448 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 7564 transitions. Word has length 40 [2022-11-03 02:52:14,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:14,450 INFO L495 AbstractCegarLoop]: Abstraction has 5144 states and 7564 transitions. [2022-11-03 02:52:14,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 02:52:14,451 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 7564 transitions. [2022-11-03 02:52:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 02:52:14,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:14,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-03 02:52:14,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:52:14,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:14,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash 508521822, now seen corresponding path program 1 times [2022-11-03 02:52:14,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:14,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123940617] [2022-11-03 02:52:14,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:14,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:52:16,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123940617] [2022-11-03 02:52:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123940617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:16,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:16,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661759651] [2022-11-03 02:52:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:16,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:16,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:16,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:16,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:16,068 INFO L87 Difference]: Start difference. First operand 5144 states and 7564 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:52:18,174 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 [] [2022-11-03 02:52:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:27,046 INFO L93 Difference]: Finished difference Result 5154 states and 7573 transitions. [2022-11-03 02:52:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 46 [2022-11-03 02:52:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:27,085 INFO L225 Difference]: With dead ends: 5154 [2022-11-03 02:52:27,085 INFO L226 Difference]: Without dead ends: 5152 [2022-11-03 02:52:27,090 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 [2022-11-03 02:52:27,091 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:27,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 02:52:27,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2022-11-03 02:52:27,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 5152. [2022-11-03 02:52:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 2882 states have (on average 1.2560721721027064) internal successors, (3620), 3037 states have internal predecessors, (3620), 1936 states have call successors, (1936), 340 states have call predecessors, (1936), 331 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:52:27,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 7570 transitions. [2022-11-03 02:52:27,698 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 7570 transitions. Word has length 46 [2022-11-03 02:52:27,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:27,699 INFO L495 AbstractCegarLoop]: Abstraction has 5152 states and 7570 transitions. [2022-11-03 02:52:27,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 02:52:27,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 7570 transitions. [2022-11-03 02:52:27,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 02:52:27,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:27,704 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:27,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:52:27,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:27,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:27,706 INFO L85 PathProgramCache]: Analyzing trace with hash -610233447, now seen corresponding path program 1 times [2022-11-03 02:52:27,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:27,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806834550] [2022-11-03 02:52:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:29,629 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-03 02:52:29,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:29,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806834550] [2022-11-03 02:52:29,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806834550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:29,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:29,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:29,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876296762] [2022-11-03 02:52:29,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:29,632 INFO L87 Difference]: Start difference. First operand 5152 states and 7570 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:52:31,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:39,790 INFO L93 Difference]: Finished difference Result 5162 states and 7579 transitions. [2022-11-03 02:52:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:39,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 51 [2022-11-03 02:52:39,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:39,837 INFO L225 Difference]: With dead ends: 5162 [2022-11-03 02:52:39,837 INFO L226 Difference]: Without dead ends: 5160 [2022-11-03 02:52:39,843 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 [2022-11-03 02:52:39,845 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4088 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:39,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4088 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 9.8s Time] [2022-11-03 02:52:39,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5160 states. [2022-11-03 02:52:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5160 to 5160. [2022-11-03 02:52:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5160 states, 2888 states have (on average 1.255540166204986) internal successors, (3626), 3043 states have internal predecessors, (3626), 1936 states have call successors, (1936), 342 states have call predecessors, (1936), 333 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:52:40,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5160 states to 5160 states and 7576 transitions. [2022-11-03 02:52:40,428 INFO L78 Accepts]: Start accepts. Automaton has 5160 states and 7576 transitions. Word has length 51 [2022-11-03 02:52:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:40,428 INFO L495 AbstractCegarLoop]: Abstraction has 5160 states and 7576 transitions. [2022-11-03 02:52:40,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 02:52:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 5160 states and 7576 transitions. [2022-11-03 02:52:40,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 02:52:40,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:40,431 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:40,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:52:40,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:40,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:40,434 INFO L85 PathProgramCache]: Analyzing trace with hash 98710014, now seen corresponding path program 1 times [2022-11-03 02:52:40,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:40,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734017732] [2022-11-03 02:52:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:40,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 02:52:42,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734017732] [2022-11-03 02:52:42,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734017732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:42,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:42,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49206806] [2022-11-03 02:52:42,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:42,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:42,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:42,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:42,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:42,188 INFO L87 Difference]: Start difference. First operand 5160 states and 7576 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:52:44,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:52:52,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:52,831 INFO L93 Difference]: Finished difference Result 5170 states and 7585 transitions. [2022-11-03 02:52:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:52:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 56 [2022-11-03 02:52:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:52,864 INFO L225 Difference]: With dead ends: 5170 [2022-11-03 02:52:52,864 INFO L226 Difference]: Without dead ends: 5168 [2022-11-03 02:52:52,868 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 [2022-11-03 02:52:52,869 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:52,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 02:52:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5168 states. [2022-11-03 02:52:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5168 to 5168. [2022-11-03 02:52:53,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5168 states, 2894 states have (on average 1.2550103662750518) internal successors, (3632), 3049 states have internal predecessors, (3632), 1936 states have call successors, (1936), 344 states have call predecessors, (1936), 335 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:52:53,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5168 states to 5168 states and 7582 transitions. [2022-11-03 02:52:53,277 INFO L78 Accepts]: Start accepts. Automaton has 5168 states and 7582 transitions. Word has length 56 [2022-11-03 02:52:53,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:53,278 INFO L495 AbstractCegarLoop]: Abstraction has 5168 states and 7582 transitions. [2022-11-03 02:52:53,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-03 02:52:53,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5168 states and 7582 transitions. [2022-11-03 02:52:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-03 02:52:53,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:53,281 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:53,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:52:53,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:52:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:53,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1831041244, now seen corresponding path program 1 times [2022-11-03 02:52:53,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:52:53,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839196829] [2022-11-03 02:52:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:53,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:52:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-03 02:52:54,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:52:54,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839196829] [2022-11-03 02:52:54,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839196829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:54,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:54,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019975376] [2022-11-03 02:52:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:54,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:54,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:54,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:54,855 INFO L87 Difference]: Start difference. First operand 5168 states and 7582 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:52:56,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:04,686 INFO L93 Difference]: Finished difference Result 5178 states and 7591 transitions. [2022-11-03 02:53:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 60 [2022-11-03 02:53:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:04,726 INFO L225 Difference]: With dead ends: 5178 [2022-11-03 02:53:04,727 INFO L226 Difference]: Without dead ends: 5176 [2022-11-03 02:53:04,732 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 [2022-11-03 02:53:04,733 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4087 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:04,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4087 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2022-11-03 02:53:04,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2022-11-03 02:53:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 5176. [2022-11-03 02:53:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5176 states, 2900 states have (on average 1.2544827586206897) internal successors, (3638), 3055 states have internal predecessors, (3638), 1936 states have call successors, (1936), 346 states have call predecessors, (1936), 337 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:53:05,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 7588 transitions. [2022-11-03 02:53:05,354 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 7588 transitions. Word has length 60 [2022-11-03 02:53:05,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:05,355 INFO L495 AbstractCegarLoop]: Abstraction has 5176 states and 7588 transitions. [2022-11-03 02:53:05,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:53:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 7588 transitions. [2022-11-03 02:53:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:53:05,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:05,357 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:05,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:53:05,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:53:05,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:05,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1764843166, now seen corresponding path program 1 times [2022-11-03 02:53:05,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:05,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830879161] [2022-11-03 02:53:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:05,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-03 02:53:06,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830879161] [2022-11-03 02:53:06,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830879161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:06,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:06,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:53:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672990246] [2022-11-03 02:53:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:06,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:53:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:53:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:06,734 INFO L87 Difference]: Start difference. First operand 5176 states and 7588 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:53:08,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:17,097 INFO L93 Difference]: Finished difference Result 5186 states and 7597 transitions. [2022-11-03 02:53:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:17,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 66 [2022-11-03 02:53:17,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:17,127 INFO L225 Difference]: With dead ends: 5186 [2022-11-03 02:53:17,128 INFO L226 Difference]: Without dead ends: 5184 [2022-11-03 02:53:17,131 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 [2022-11-03 02:53:17,132 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4085 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:17,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4085 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:53:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2022-11-03 02:53:17,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 5184. [2022-11-03 02:53:17,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 2906 states have (on average 1.2539573296627666) internal successors, (3644), 3061 states have internal predecessors, (3644), 1936 states have call successors, (1936), 348 states have call predecessors, (1936), 339 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2022-11-03 02:53:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7594 transitions. [2022-11-03 02:53:17,622 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7594 transitions. Word has length 66 [2022-11-03 02:53:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:17,622 INFO L495 AbstractCegarLoop]: Abstraction has 5184 states and 7594 transitions. [2022-11-03 02:53:17,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:53:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7594 transitions. [2022-11-03 02:53:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:53:17,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:17,624 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:17,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:53:17,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:53:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash 731840508, now seen corresponding path program 1 times [2022-11-03 02:53:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744912955] [2022-11-03 02:53:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:53:18,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:18,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744912955] [2022-11-03 02:53:18,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744912955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:18,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:18,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:53:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615727977] [2022-11-03 02:53:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:18,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:53:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:18,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:53:18,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:18,979 INFO L87 Difference]: Start difference. First operand 5184 states and 7594 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:53:21,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:33,558 INFO L93 Difference]: Finished difference Result 7329 states and 10612 transitions. [2022-11-03 02:53:33,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-03 02:53:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:33,598 INFO L225 Difference]: With dead ends: 7329 [2022-11-03 02:53:33,599 INFO L226 Difference]: Without dead ends: 7327 [2022-11-03 02:53:33,603 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 [2022-11-03 02:53:33,603 INFO L413 NwaCegarLoop]: 5004 mSDtfsCounter, 3048 mSDsluCounter, 13551 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 17315 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:33,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3059 Valid, 17315 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1775 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2022-11-03 02:53:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2022-11-03 02:53:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7319. [2022-11-03 02:53:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7319 states, 4107 states have (on average 1.2434867299732164) internal successors, (5107), 4299 states have internal predecessors, (5107), 2677 states have call successors, (2677), 549 states have call predecessors, (2677), 532 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-03 02:53:34,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7319 states to 7319 states and 10603 transitions. [2022-11-03 02:53:34,320 INFO L78 Accepts]: Start accepts. Automaton has 7319 states and 10603 transitions. Word has length 70 [2022-11-03 02:53:34,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:34,320 INFO L495 AbstractCegarLoop]: Abstraction has 7319 states and 10603 transitions. [2022-11-03 02:53:34,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:53:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7319 states and 10603 transitions. [2022-11-03 02:53:34,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:53:34,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:34,322 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:34,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:53:34,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:53:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash -110400901, now seen corresponding path program 1 times [2022-11-03 02:53:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:34,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013484285] [2022-11-03 02:53:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-03 02:53:35,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:35,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013484285] [2022-11-03 02:53:35,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013484285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:35,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:35,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:53:35,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77034753] [2022-11-03 02:53:35,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:35,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:53:35,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:35,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:53:35,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:35,793 INFO L87 Difference]: Start difference. First operand 7319 states and 10603 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:53:37,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:53:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:46,779 INFO L93 Difference]: Finished difference Result 7329 states and 10612 transitions. [2022-11-03 02:53:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:53:46,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 75 [2022-11-03 02:53:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:46,826 INFO L225 Difference]: With dead ends: 7329 [2022-11-03 02:53:46,826 INFO L226 Difference]: Without dead ends: 7327 [2022-11-03 02:53:46,833 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 [2022-11-03 02:53:46,834 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4084 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:46,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4084 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2022-11-03 02:53:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2022-11-03 02:53:47,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 7327. [2022-11-03 02:53:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7327 states, 4113 states have (on average 1.2431315341599805) internal successors, (5113), 4305 states have internal predecessors, (5113), 2677 states have call successors, (2677), 551 states have call predecessors, (2677), 534 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-03 02:53:47,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7327 states to 7327 states and 10609 transitions. [2022-11-03 02:53:47,725 INFO L78 Accepts]: Start accepts. Automaton has 7327 states and 10609 transitions. Word has length 75 [2022-11-03 02:53:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:47,726 INFO L495 AbstractCegarLoop]: Abstraction has 7327 states and 10609 transitions. [2022-11-03 02:53:47,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-03 02:53:47,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7327 states and 10609 transitions. [2022-11-03 02:53:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:53:47,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:47,735 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:47,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:53:47,735 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:53:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1515860196, now seen corresponding path program 1 times [2022-11-03 02:53:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:53:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363564607] [2022-11-03 02:53:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:53:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-03 02:53:49,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:53:49,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363564607] [2022-11-03 02:53:49,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363564607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:49,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:49,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:53:49,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294803431] [2022-11-03 02:53:49,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:49,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:53:49,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:53:49,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:53:49,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:49,086 INFO L87 Difference]: Start difference. First operand 7327 states and 10609 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:53:51,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:00,875 INFO L93 Difference]: Finished difference Result 7337 states and 10618 transitions. [2022-11-03 02:54:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:54:00,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 80 [2022-11-03 02:54:00,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:00,917 INFO L225 Difference]: With dead ends: 7337 [2022-11-03 02:54:00,918 INFO L226 Difference]: Without dead ends: 7335 [2022-11-03 02:54:00,922 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 [2022-11-03 02:54:00,923 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:00,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:54:00,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7335 states. [2022-11-03 02:54:01,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7335 to 7335. [2022-11-03 02:54:01,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7335 states, 4119 states have (on average 1.2427773731488225) internal successors, (5119), 4311 states have internal predecessors, (5119), 2677 states have call successors, (2677), 553 states have call predecessors, (2677), 536 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-03 02:54:01,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 10615 transitions. [2022-11-03 02:54:01,617 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 10615 transitions. Word has length 80 [2022-11-03 02:54:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:01,618 INFO L495 AbstractCegarLoop]: Abstraction has 7335 states and 10615 transitions. [2022-11-03 02:54:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:54:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 10615 transitions. [2022-11-03 02:54:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-03 02:54:01,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:01,620 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:01,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:54:01,621 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:54:01,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:01,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1159937755, now seen corresponding path program 1 times [2022-11-03 02:54:01,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:01,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790679242] [2022-11-03 02:54:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:01,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-11-03 02:54:02,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:02,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790679242] [2022-11-03 02:54:02,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790679242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:02,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:02,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:54:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263771130] [2022-11-03 02:54:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:02,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:02,999 INFO L87 Difference]: Start difference. First operand 7335 states and 10615 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:54:05,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:13,850 INFO L93 Difference]: Finished difference Result 7345 states and 10624 transitions. [2022-11-03 02:54:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:54:13,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-03 02:54:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:13,899 INFO L225 Difference]: With dead ends: 7345 [2022-11-03 02:54:13,899 INFO L226 Difference]: Without dead ends: 7343 [2022-11-03 02:54:13,906 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 [2022-11-03 02:54:13,907 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4082 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:13,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4082 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-03 02:54:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2022-11-03 02:54:14,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7343. [2022-11-03 02:54:14,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7343 states, 4125 states have (on average 1.2424242424242424) internal successors, (5125), 4317 states have internal predecessors, (5125), 2677 states have call successors, (2677), 555 states have call predecessors, (2677), 538 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-03 02:54:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7343 states to 7343 states and 10621 transitions. [2022-11-03 02:54:14,879 INFO L78 Accepts]: Start accepts. Automaton has 7343 states and 10621 transitions. Word has length 85 [2022-11-03 02:54:14,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:14,880 INFO L495 AbstractCegarLoop]: Abstraction has 7343 states and 10621 transitions. [2022-11-03 02:54:14,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:54:14,880 INFO L276 IsEmpty]: Start isEmpty. Operand 7343 states and 10621 transitions. [2022-11-03 02:54:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-03 02:54:14,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:14,883 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:14,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:54:14,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:54:14,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:14,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1016504551, now seen corresponding path program 1 times [2022-11-03 02:54:14,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:14,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932064823] [2022-11-03 02:54:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-11-03 02:54:16,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:16,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932064823] [2022-11-03 02:54:16,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932064823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:16,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:16,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:54:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505385466] [2022-11-03 02:54:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:16,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:16,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:16,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:16,389 INFO L87 Difference]: Start difference. First operand 7343 states and 10621 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:54:18,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:28,159 INFO L93 Difference]: Finished difference Result 7353 states and 10630 transitions. [2022-11-03 02:54:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:54:28,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 91 [2022-11-03 02:54:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:28,198 INFO L225 Difference]: With dead ends: 7353 [2022-11-03 02:54:28,199 INFO L226 Difference]: Without dead ends: 7351 [2022-11-03 02:54:28,204 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 [2022-11-03 02:54:28,205 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4080 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4080 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:54:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2022-11-03 02:54:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 7351. [2022-11-03 02:54:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7351 states, 4131 states have (on average 1.242072137496974) internal successors, (5131), 4323 states have internal predecessors, (5131), 2677 states have call successors, (2677), 557 states have call predecessors, (2677), 540 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2022-11-03 02:54:29,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7351 states to 7351 states and 10627 transitions. [2022-11-03 02:54:29,050 INFO L78 Accepts]: Start accepts. Automaton has 7351 states and 10627 transitions. Word has length 91 [2022-11-03 02:54:29,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:29,051 INFO L495 AbstractCegarLoop]: Abstraction has 7351 states and 10627 transitions. [2022-11-03 02:54:29,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:54:29,052 INFO L276 IsEmpty]: Start isEmpty. Operand 7351 states and 10627 transitions. [2022-11-03 02:54:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-03 02:54:29,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:29,055 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:54:29,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:54:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash -30059394, now seen corresponding path program 1 times [2022-11-03 02:54:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251740943] [2022-11-03 02:54:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:29,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:30,650 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2022-11-03 02:54:30,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:30,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251740943] [2022-11-03 02:54:30,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251740943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:30,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:30,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:54:30,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418085983] [2022-11-03 02:54:30,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:30,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:30,653 INFO L87 Difference]: Start difference. First operand 7351 states and 10627 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:54:32,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:41,214 INFO L93 Difference]: Finished difference Result 7481 states and 10745 transitions. [2022-11-03 02:54:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:54:41,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2022-11-03 02:54:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:41,244 INFO L225 Difference]: With dead ends: 7481 [2022-11-03 02:54:41,244 INFO L226 Difference]: Without dead ends: 7479 [2022-11-03 02:54:41,250 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 [2022-11-03 02:54:41,251 INFO L413 NwaCegarLoop]: 3728 mSDtfsCounter, 4037 mSDsluCounter, 8290 mSDsCounter, 0 mSdLazyCounter, 1221 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4043 SdHoareTripleChecker+Valid, 11220 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:41,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4043 Valid, 11220 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1221 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:54:41,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7479 states. [2022-11-03 02:54:41,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7479 to 7477. [2022-11-03 02:54:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7477 states, 4207 states have (on average 1.2400760637033517) internal successors, (5217), 4401 states have internal predecessors, (5217), 2691 states have call successors, (2691), 593 states have call predecessors, (2691), 576 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:54:41,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7477 states to 7477 states and 10741 transitions. [2022-11-03 02:54:41,986 INFO L78 Accepts]: Start accepts. Automaton has 7477 states and 10741 transitions. Word has length 96 [2022-11-03 02:54:41,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:41,986 INFO L495 AbstractCegarLoop]: Abstraction has 7477 states and 10741 transitions. [2022-11-03 02:54:41,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 02:54:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7477 states and 10741 transitions. [2022-11-03 02:54:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 02:54:41,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:41,989 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:41,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:54:41,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:54:41,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:41,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1362418143, now seen corresponding path program 1 times [2022-11-03 02:54:41,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:41,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323780200] [2022-11-03 02:54:41,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:41,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:54:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 02:54:44,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:54:44,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323780200] [2022-11-03 02:54:44,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323780200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:44,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:44,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:54:44,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999496189] [2022-11-03 02:54:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:44,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:44,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:54:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:44,466 INFO L87 Difference]: Start difference. First operand 7477 states and 10741 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:54:46,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:54:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:59,082 INFO L93 Difference]: Finished difference Result 7495 states and 10756 transitions. [2022-11-03 02:54:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:54:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 114 [2022-11-03 02:54:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:59,118 INFO L225 Difference]: With dead ends: 7495 [2022-11-03 02:54:59,118 INFO L226 Difference]: Without dead ends: 7493 [2022-11-03 02:54:59,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:54:59,126 INFO L413 NwaCegarLoop]: 5003 mSDtfsCounter, 3038 mSDsluCounter, 13565 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 17330 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:59,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 17330 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1765 Invalid, 1 Unknown, 0 Unchecked, 13.8s Time] [2022-11-03 02:54:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7493 states. [2022-11-03 02:54:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7493 to 7485. [2022-11-03 02:54:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7485 states, 4213 states have (on average 1.2397341561832425) internal successors, (5223), 4407 states have internal predecessors, (5223), 2691 states have call successors, (2691), 595 states have call predecessors, (2691), 578 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:54:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7485 states to 7485 states and 10747 transitions. [2022-11-03 02:54:59,830 INFO L78 Accepts]: Start accepts. Automaton has 7485 states and 10747 transitions. Word has length 114 [2022-11-03 02:54:59,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:59,831 INFO L495 AbstractCegarLoop]: Abstraction has 7485 states and 10747 transitions. [2022-11-03 02:54:59,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:54:59,832 INFO L276 IsEmpty]: Start isEmpty. Operand 7485 states and 10747 transitions. [2022-11-03 02:54:59,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:54:59,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:59,834 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:59,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:54:59,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:54:59,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash -554875556, now seen corresponding path program 1 times [2022-11-03 02:54:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:54:59,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009712020] [2022-11-03 02:54:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:59,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-11-03 02:55:01,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:01,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009712020] [2022-11-03 02:55:01,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009712020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:01,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:01,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036683540] [2022-11-03 02:55:01,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:01,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:01,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:01,178 INFO L87 Difference]: Start difference. First operand 7485 states and 10747 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:55:03,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:13,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:13,065 INFO L93 Difference]: Finished difference Result 7561 states and 10799 transitions. [2022-11-03 02:55:13,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:55:13,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 100 [2022-11-03 02:55:13,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:13,094 INFO L225 Difference]: With dead ends: 7561 [2022-11-03 02:55:13,094 INFO L226 Difference]: Without dead ends: 7559 [2022-11-03 02:55:13,099 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 [2022-11-03 02:55:13,100 INFO L413 NwaCegarLoop]: 3711 mSDtfsCounter, 4019 mSDsluCounter, 8280 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4024 SdHoareTripleChecker+Valid, 11187 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:13,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4024 Valid, 11187 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1229 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-03 02:55:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7559 states. [2022-11-03 02:55:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7559 to 7557. [2022-11-03 02:55:13,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7557 states, 4257 states have (on average 1.2381959126145172) internal successors, (5271), 4451 states have internal predecessors, (5271), 2691 states have call successors, (2691), 623 states have call predecessors, (2691), 606 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:55:13,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7557 states to 7557 states and 10795 transitions. [2022-11-03 02:55:13,819 INFO L78 Accepts]: Start accepts. Automaton has 7557 states and 10795 transitions. Word has length 100 [2022-11-03 02:55:13,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:13,820 INFO L495 AbstractCegarLoop]: Abstraction has 7557 states and 10795 transitions. [2022-11-03 02:55:13,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:55:13,820 INFO L276 IsEmpty]: Start isEmpty. Operand 7557 states and 10795 transitions. [2022-11-03 02:55:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-03 02:55:13,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:13,822 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:13,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:55:13,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:55:13,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:13,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1983901797, now seen corresponding path program 1 times [2022-11-03 02:55:13,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:13,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446090741] [2022-11-03 02:55:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:13,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2022-11-03 02:55:15,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:15,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446090741] [2022-11-03 02:55:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446090741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:15,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:15,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827668622] [2022-11-03 02:55:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:15,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:15,023 INFO L87 Difference]: Start difference. First operand 7557 states and 10795 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:55:17,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:25,832 INFO L93 Difference]: Finished difference Result 7567 states and 10804 transitions. [2022-11-03 02:55:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:55:25,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 105 [2022-11-03 02:55:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:25,856 INFO L225 Difference]: With dead ends: 7567 [2022-11-03 02:55:25,856 INFO L226 Difference]: Without dead ends: 7565 [2022-11-03 02:55:25,860 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 [2022-11-03 02:55:25,860 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4078 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:25,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4078 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2022-11-03 02:55:25,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7565 states. [2022-11-03 02:55:26,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 7565. [2022-11-03 02:55:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7565 states, 4263 states have (on average 1.2378606615059817) internal successors, (5277), 4457 states have internal predecessors, (5277), 2691 states have call successors, (2691), 625 states have call predecessors, (2691), 608 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:55:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7565 states to 7565 states and 10801 transitions. [2022-11-03 02:55:26,468 INFO L78 Accepts]: Start accepts. Automaton has 7565 states and 10801 transitions. Word has length 105 [2022-11-03 02:55:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:26,469 INFO L495 AbstractCegarLoop]: Abstraction has 7565 states and 10801 transitions. [2022-11-03 02:55:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:55:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 7565 states and 10801 transitions. [2022-11-03 02:55:26,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:55:26,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:26,472 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:26,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:55:26,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:55:26,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash -256250756, now seen corresponding path program 1 times [2022-11-03 02:55:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:26,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441168578] [2022-11-03 02:55:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 431 trivial. 0 not checked. [2022-11-03 02:55:27,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:27,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441168578] [2022-11-03 02:55:27,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441168578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:27,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:27,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647188897] [2022-11-03 02:55:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:27,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:27,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:27,599 INFO L87 Difference]: Start difference. First operand 7565 states and 10801 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:55:29,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:38,833 INFO L93 Difference]: Finished difference Result 7575 states and 10810 transitions. [2022-11-03 02:55:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:55:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 110 [2022-11-03 02:55:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:38,856 INFO L225 Difference]: With dead ends: 7575 [2022-11-03 02:55:38,856 INFO L226 Difference]: Without dead ends: 7573 [2022-11-03 02:55:38,860 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 [2022-11-03 02:55:38,861 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4074 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4077 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:38,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4077 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:55:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7573 states. [2022-11-03 02:55:39,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7573 to 7573. [2022-11-03 02:55:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7573 states, 4269 states have (on average 1.2375263527758258) internal successors, (5283), 4463 states have internal predecessors, (5283), 2691 states have call successors, (2691), 627 states have call predecessors, (2691), 610 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:55:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10807 transitions. [2022-11-03 02:55:39,496 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10807 transitions. Word has length 110 [2022-11-03 02:55:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:39,496 INFO L495 AbstractCegarLoop]: Abstraction has 7573 states and 10807 transitions. [2022-11-03 02:55:39,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:55:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10807 transitions. [2022-11-03 02:55:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-03 02:55:39,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:39,499 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:39,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:55:39,499 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:55:39,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:39,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2111919550, now seen corresponding path program 1 times [2022-11-03 02:55:39,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:39,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123979870] [2022-11-03 02:55:39,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:39,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2022-11-03 02:55:40,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:40,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123979870] [2022-11-03 02:55:40,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123979870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:40,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:40,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:40,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338735894] [2022-11-03 02:55:40,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:40,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:40,831 INFO L87 Difference]: Start difference. First operand 7573 states and 10807 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:55:42,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:55:52,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:52,019 INFO L93 Difference]: Finished difference Result 7583 states and 10816 transitions. [2022-11-03 02:55:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:55:52,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 116 [2022-11-03 02:55:52,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:52,040 INFO L225 Difference]: With dead ends: 7583 [2022-11-03 02:55:52,041 INFO L226 Difference]: Without dead ends: 7581 [2022-11-03 02:55:52,044 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 [2022-11-03 02:55:52,045 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4073 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4075 SdHoareTripleChecker+Valid, 11092 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:52,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4075 Valid, 11092 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:55:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7581 states. [2022-11-03 02:55:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7581 to 7581. [2022-11-03 02:55:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7581 states, 4275 states have (on average 1.2371929824561403) internal successors, (5289), 4469 states have internal predecessors, (5289), 2691 states have call successors, (2691), 629 states have call predecessors, (2691), 612 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:55:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7581 states to 7581 states and 10813 transitions. [2022-11-03 02:55:52,756 INFO L78 Accepts]: Start accepts. Automaton has 7581 states and 10813 transitions. Word has length 116 [2022-11-03 02:55:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:52,757 INFO L495 AbstractCegarLoop]: Abstraction has 7581 states and 10813 transitions. [2022-11-03 02:55:52,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:55:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 7581 states and 10813 transitions. [2022-11-03 02:55:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 02:55:52,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:52,760 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:52,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:55:52,760 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:55:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:52,760 INFO L85 PathProgramCache]: Analyzing trace with hash 153046705, now seen corresponding path program 1 times [2022-11-03 02:55:52,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:55:52,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398215207] [2022-11-03 02:55:52,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:52,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:55:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-03 02:55:55,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:55:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398215207] [2022-11-03 02:55:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398215207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:55:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:55:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127895777] [2022-11-03 02:55:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:55,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:55:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:55:55,123 INFO L87 Difference]: Start difference. First operand 7581 states and 10813 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:55:57,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:09,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:09,735 INFO L93 Difference]: Finished difference Result 7601 states and 10829 transitions. [2022-11-03 02:56:09,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:56:09,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 142 [2022-11-03 02:56:09,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:09,763 INFO L225 Difference]: With dead ends: 7601 [2022-11-03 02:56:09,764 INFO L226 Difference]: Without dead ends: 7599 [2022-11-03 02:56:09,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:56:09,767 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 3907 mSDsluCounter, 13869 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 17404 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:09,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 17404 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1622 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 02:56:09,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2022-11-03 02:56:10,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 7589. [2022-11-03 02:56:10,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7589 states, 4281 states have (on average 1.2368605466012614) internal successors, (5295), 4475 states have internal predecessors, (5295), 2691 states have call successors, (2691), 631 states have call predecessors, (2691), 614 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:56:10,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7589 states to 7589 states and 10819 transitions. [2022-11-03 02:56:10,432 INFO L78 Accepts]: Start accepts. Automaton has 7589 states and 10819 transitions. Word has length 142 [2022-11-03 02:56:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:10,432 INFO L495 AbstractCegarLoop]: Abstraction has 7589 states and 10819 transitions. [2022-11-03 02:56:10,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:56:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 7589 states and 10819 transitions. [2022-11-03 02:56:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 02:56:10,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:10,434 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:10,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:56:10,435 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:56:10,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash 409482169, now seen corresponding path program 1 times [2022-11-03 02:56:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:10,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816093747] [2022-11-03 02:56:10,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-11-03 02:56:11,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:11,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816093747] [2022-11-03 02:56:11,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816093747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:56:11,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:56:11,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:56:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771875135] [2022-11-03 02:56:11,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:56:11,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:56:11,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:11,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:56:11,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:56:11,664 INFO L87 Difference]: Start difference. First operand 7589 states and 10819 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:56:13,765 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 [] [2022-11-03 02:56:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:23,115 INFO L93 Difference]: Finished difference Result 7633 states and 10855 transitions. [2022-11-03 02:56:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:56:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 121 [2022-11-03 02:56:23,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:23,143 INFO L225 Difference]: With dead ends: 7633 [2022-11-03 02:56:23,144 INFO L226 Difference]: Without dead ends: 7629 [2022-11-03 02:56:23,148 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 [2022-11-03 02:56:23,149 INFO L413 NwaCegarLoop]: 3706 mSDtfsCounter, 4045 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4046 SdHoareTripleChecker+Valid, 11122 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:23,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4046 Valid, 11122 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1216 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2022-11-03 02:56:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7629 states. [2022-11-03 02:56:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7629 to 7627. [2022-11-03 02:56:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7627 states, 4308 states have (on average 1.2360724233983287) internal successors, (5325), 4501 states have internal predecessors, (5325), 2691 states have call successors, (2691), 643 states have call predecessors, (2691), 625 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2022-11-03 02:56:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7627 states to 7627 states and 10849 transitions. [2022-11-03 02:56:23,868 INFO L78 Accepts]: Start accepts. Automaton has 7627 states and 10849 transitions. Word has length 121 [2022-11-03 02:56:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:23,868 INFO L495 AbstractCegarLoop]: Abstraction has 7627 states and 10849 transitions. [2022-11-03 02:56:23,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:56:23,868 INFO L276 IsEmpty]: Start isEmpty. Operand 7627 states and 10849 transitions. [2022-11-03 02:56:23,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-03 02:56:23,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:23,872 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:23,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:56:23,873 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:56:23,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash -317656482, now seen corresponding path program 1 times [2022-11-03 02:56:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:23,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113922181] [2022-11-03 02:56:23,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-11-03 02:56:25,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:25,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113922181] [2022-11-03 02:56:25,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113922181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:56:25,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:56:25,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:56:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343122838] [2022-11-03 02:56:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:56:25,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:56:25,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:56:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:56:25,224 INFO L87 Difference]: Start difference. First operand 7627 states and 10849 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:56:27,330 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 [] [2022-11-03 02:56:36,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:36,834 INFO L93 Difference]: Finished difference Result 7633 states and 10854 transitions. [2022-11-03 02:56:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:56:36,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 126 [2022-11-03 02:56:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:36,858 INFO L225 Difference]: With dead ends: 7633 [2022-11-03 02:56:36,859 INFO L226 Difference]: Without dead ends: 7429 [2022-11-03 02:56:36,863 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 [2022-11-03 02:56:36,864 INFO L413 NwaCegarLoop]: 3707 mSDtfsCounter, 4073 mSDsluCounter, 8178 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 11095 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:36,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 11095 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1208 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2022-11-03 02:56:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7429 states. [2022-11-03 02:56:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7429 to 7429. [2022-11-03 02:56:37,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7429 states, 4192 states have (on average 1.2416507633587786) internal successors, (5205), 4383 states have internal predecessors, (5205), 2645 states have call successors, (2645), 606 states have call predecessors, (2645), 589 states have return successors, (2790), 2579 states have call predecessors, (2790), 2642 states have call successors, (2790) [2022-11-03 02:56:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 10640 transitions. [2022-11-03 02:56:37,771 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 10640 transitions. Word has length 126 [2022-11-03 02:56:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:37,771 INFO L495 AbstractCegarLoop]: Abstraction has 7429 states and 10640 transitions. [2022-11-03 02:56:37,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:56:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 10640 transitions. [2022-11-03 02:56:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-03 02:56:37,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:37,775 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:37,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:56:37,776 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:56:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1548611061, now seen corresponding path program 1 times [2022-11-03 02:56:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:37,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370811372] [2022-11-03 02:56:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:56:38,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:38,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370811372] [2022-11-03 02:56:38,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370811372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:56:38,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:56:38,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:56:38,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762890760] [2022-11-03 02:56:38,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:56:38,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:56:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:38,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:56:38,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:56:38,777 INFO L87 Difference]: Start difference. First operand 7429 states and 10640 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:56:40,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:56:50,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:56:50,306 INFO L93 Difference]: Finished difference Result 14852 states and 21281 transitions. [2022-11-03 02:56:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:56:50,307 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 150 [2022-11-03 02:56:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:56:50,346 INFO L225 Difference]: With dead ends: 14852 [2022-11-03 02:56:50,346 INFO L226 Difference]: Without dead ends: 7437 [2022-11-03 02:56:50,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:56:50,389 INFO L413 NwaCegarLoop]: 3660 mSDtfsCounter, 10 mSDsluCounter, 8090 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10962 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:56:50,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10962 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1200 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 02:56:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7437 states. [2022-11-03 02:56:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7437 to 7433. [2022-11-03 02:56:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7433 states, 4194 states have (on average 1.2415355269432522) internal successors, (5207), 4387 states have internal predecessors, (5207), 2645 states have call successors, (2645), 606 states have call predecessors, (2645), 591 states have return successors, (2792), 2579 states have call predecessors, (2792), 2642 states have call successors, (2792) [2022-11-03 02:56:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7433 states to 7433 states and 10644 transitions. [2022-11-03 02:56:51,280 INFO L78 Accepts]: Start accepts. Automaton has 7433 states and 10644 transitions. Word has length 150 [2022-11-03 02:56:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:56:51,281 INFO L495 AbstractCegarLoop]: Abstraction has 7433 states and 10644 transitions. [2022-11-03 02:56:51,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:56:51,281 INFO L276 IsEmpty]: Start isEmpty. Operand 7433 states and 10644 transitions. [2022-11-03 02:56:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-03 02:56:51,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:56:51,284 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:56:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 02:56:51,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:56:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:56:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1143424807, now seen corresponding path program 1 times [2022-11-03 02:56:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:56:51,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384108032] [2022-11-03 02:56:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:51,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:56:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-03 02:56:51,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:56:51,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384108032] [2022-11-03 02:56:51,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384108032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:56:51,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:56:51,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:56:51,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723346388] [2022-11-03 02:56:51,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:56:51,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:56:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:56:51,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:56:51,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:56:51,973 INFO L87 Difference]: Start difference. First operand 7433 states and 10644 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:56:54,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:57:00,719 INFO L93 Difference]: Finished difference Result 14717 states and 21243 transitions. [2022-11-03 02:57:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:57:00,719 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), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 151 [2022-11-03 02:57:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:57:00,748 INFO L225 Difference]: With dead ends: 14717 [2022-11-03 02:57:00,748 INFO L226 Difference]: Without dead ends: 7298 [2022-11-03 02:57:00,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:57:00,775 INFO L413 NwaCegarLoop]: 3663 mSDtfsCounter, 1 mSDsluCounter, 4054 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7323 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:57:00,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7323 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 795 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:57:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2022-11-03 02:57:01,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 7296. [2022-11-03 02:57:01,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7296 states, 4120 states have (on average 1.2402912621359223) internal successors, (5110), 4308 states have internal predecessors, (5110), 2587 states have call successors, (2587), 601 states have call predecessors, (2587), 586 states have return successors, (2718), 2522 states have call predecessors, (2718), 2584 states have call successors, (2718) [2022-11-03 02:57:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7296 states to 7296 states and 10415 transitions. [2022-11-03 02:57:01,615 INFO L78 Accepts]: Start accepts. Automaton has 7296 states and 10415 transitions. Word has length 151 [2022-11-03 02:57:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:57:01,616 INFO L495 AbstractCegarLoop]: Abstraction has 7296 states and 10415 transitions. [2022-11-03 02:57:01,616 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), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-03 02:57:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 7296 states and 10415 transitions. [2022-11-03 02:57:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-03 02:57:01,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:57:01,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:57:01,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 02:57:01,620 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:57:01,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:57:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1627071244, now seen corresponding path program 1 times [2022-11-03 02:57:01,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:57:01,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078929569] [2022-11-03 02:57:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:01,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:57:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:02,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:57:02,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078929569] [2022-11-03 02:57:02,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078929569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:57:02,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:57:02,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:57:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118558549] [2022-11-03 02:57:02,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:57:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:57:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:57:02,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:57:02,310 INFO L87 Difference]: Start difference. First operand 7296 states and 10415 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:57:04,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:57:11,639 INFO L93 Difference]: Finished difference Result 14856 states and 21266 transitions. [2022-11-03 02:57:11,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:57:11,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2022-11-03 02:57:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:57:11,680 INFO L225 Difference]: With dead ends: 14856 [2022-11-03 02:57:11,681 INFO L226 Difference]: Without dead ends: 7574 [2022-11-03 02:57:11,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:57:11,711 INFO L413 NwaCegarLoop]: 3720 mSDtfsCounter, 242 mSDsluCounter, 3880 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 7227 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:57:11,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 7227 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 780 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-03 02:57:11,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2022-11-03 02:57:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 7304. [2022-11-03 02:57:12,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7304 states, 4126 states have (on average 1.240426563257392) internal successors, (5118), 4315 states have internal predecessors, (5118), 2588 states have call successors, (2588), 601 states have call predecessors, (2588), 587 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-03 02:57:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7304 states to 7304 states and 10427 transitions. [2022-11-03 02:57:12,595 INFO L78 Accepts]: Start accepts. Automaton has 7304 states and 10427 transitions. Word has length 153 [2022-11-03 02:57:12,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:57:12,595 INFO L495 AbstractCegarLoop]: Abstraction has 7304 states and 10427 transitions. [2022-11-03 02:57:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:57:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7304 states and 10427 transitions. [2022-11-03 02:57:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 02:57:12,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:57:12,598 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:57:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 02:57:12,598 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:57:12,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:57:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -350277027, now seen corresponding path program 1 times [2022-11-03 02:57:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:57:12,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881065367] [2022-11-03 02:57:12,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:57:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:13,307 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:13,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:57:13,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881065367] [2022-11-03 02:57:13,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881065367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:57:13,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:57:13,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:57:13,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118063162] [2022-11-03 02:57:13,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:57:13,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:57:13,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:13,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:57:13,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:57:13,311 INFO L87 Difference]: Start difference. First operand 7304 states and 10427 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-03 02:57:15,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:57:22,203 INFO L93 Difference]: Finished difference Result 14653 states and 20958 transitions. [2022-11-03 02:57:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:57:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 154 [2022-11-03 02:57:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:57:22,242 INFO L225 Difference]: With dead ends: 14653 [2022-11-03 02:57:22,242 INFO L226 Difference]: Without dead ends: 7363 [2022-11-03 02:57:22,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:57:22,273 INFO L413 NwaCegarLoop]: 3693 mSDtfsCounter, 26 mSDsluCounter, 4062 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 7363 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:57:22,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 7363 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 798 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2022-11-03 02:57:22,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7363 states. [2022-11-03 02:57:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7363 to 7306. [2022-11-03 02:57:23,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7306 states, 4128 states have (on average 1.2403100775193798) internal successors, (5120), 4317 states have internal predecessors, (5120), 2588 states have call successors, (2588), 601 states have call predecessors, (2588), 587 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-03 02:57:23,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 10429 transitions. [2022-11-03 02:57:23,269 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 10429 transitions. Word has length 154 [2022-11-03 02:57:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:57:23,269 INFO L495 AbstractCegarLoop]: Abstraction has 7306 states and 10429 transitions. [2022-11-03 02:57:23,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2022-11-03 02:57:23,270 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 10429 transitions. [2022-11-03 02:57:23,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 02:57:23,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:57:23,273 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:57:23,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 02:57:23,273 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:57:23,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:57:23,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1952695322, now seen corresponding path program 1 times [2022-11-03 02:57:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:57:23,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017278737] [2022-11-03 02:57:23,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:23,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:57:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:25,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:57:25,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017278737] [2022-11-03 02:57:25,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017278737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:57:25,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:57:25,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:57:25,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053478848] [2022-11-03 02:57:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:57:25,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:57:25,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:57:25,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:57:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:57:25,045 INFO L87 Difference]: Start difference. First operand 7306 states and 10429 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:57:27,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:57:36,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:57:36,625 INFO L93 Difference]: Finished difference Result 7326 states and 10447 transitions. [2022-11-03 02:57:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:57:36,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 155 [2022-11-03 02:57:36,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:57:36,653 INFO L225 Difference]: With dead ends: 7326 [2022-11-03 02:57:36,653 INFO L226 Difference]: Without dead ends: 7324 [2022-11-03 02:57:36,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:57:36,659 INFO L413 NwaCegarLoop]: 3664 mSDtfsCounter, 3973 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 11010 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:57:36,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3978 Valid, 11010 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1202 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 02:57:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2022-11-03 02:57:37,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7322. [2022-11-03 02:57:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7322 states, 4140 states have (on average 1.2396135265700483) internal successors, (5132), 4329 states have internal predecessors, (5132), 2588 states have call successors, (2588), 605 states have call predecessors, (2588), 591 states have return successors, (2721), 2523 states have call predecessors, (2721), 2585 states have call successors, (2721) [2022-11-03 02:57:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 10441 transitions. [2022-11-03 02:57:37,661 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 10441 transitions. Word has length 155 [2022-11-03 02:57:37,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:57:37,662 INFO L495 AbstractCegarLoop]: Abstraction has 7322 states and 10441 transitions. [2022-11-03 02:57:37,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:57:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 10441 transitions. [2022-11-03 02:57:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 02:57:37,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:57:37,666 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:57:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 02:57:37,666 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-03 02:57:37,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:57:37,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1715475947, now seen corresponding path program 1 times [2022-11-03 02:57:37,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:57:37,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015260238] [2022-11-03 02:57:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:57:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:38,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:57:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015260238] [2022-11-03 02:57:38,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015260238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:57:38,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534908062] [2022-11-03 02:57:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:38,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:57:38,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:57:38,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:57:38,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86fceec4-9af5-4a19-ac5f-9407da7a91e1/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:57:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:42,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 5640 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:57:42,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:57:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:43,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:57:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-11-03 02:57:43,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534908062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:57:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311757987] [2022-11-03 02:57:43,268 INFO L159 IcfgInterpreter]: Started Sifa with 104 locations of interest [2022-11-03 02:57:43,269 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:57:43,272 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:57:43,277 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:57:43,278 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:57:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:57:54,303 INFO L244 Elim1Store]: Index analysis took 239 ms [2022-11-03 02:59:25,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 45 select indices, 45 select index equivalence classes, 1035 disjoint index pairs (out of 990 index pairs), introduced 45 new quantified variables, introduced 0 case distinctions, treesize of input 4769 treesize of output 4097