./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V --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 ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:44:29,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:44:29,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:44:29,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:44:29,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:44:29,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:44:29,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:44:29,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:44:29,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:44:29,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:44:29,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:44:29,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:44:29,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:44:29,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:44:29,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:44:29,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:44:29,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:44:29,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:44:29,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:44:29,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:44:29,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:44:29,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:44:29,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:44:29,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:44:29,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:44:29,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:44:29,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:44:29,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:44:29,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:44:29,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:44:29,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:44:29,572 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:44:29,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:44:29,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:44:29,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:44:29,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:44:29,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:44:29,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:44:29,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:44:29,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:44:29,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:44:29,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:44:29,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:44:29,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:44:29,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:44:29,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:44:29,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:44:29,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:44:29,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:44:29,625 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:44:29,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:44:29,626 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:44:29,626 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:44:29,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:44:29,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:44:29,627 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:44:29,627 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:44:29,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:44:29,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:44:29,628 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:44:29,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:44:29,629 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:44:29,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:44:29,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:44:29,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:44:29,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:44:29,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:44:29,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:44:29,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:44:29,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:44:29,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:44:29,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:29,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:44:29,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:44:29,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:44:29,646 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:44:29,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:44:29,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:44:29,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:44:29,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:44:29,647 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebed12b86dce507000a7a0630996a9595573172c73db75fed69855441af252c1 [2021-11-23 02:44:29,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:44:29,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:44:29,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:44:29,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:44:29,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:44:29,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:44:30,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/data/e2a16a6de/cdec728d0fff43d995823b1858c4b673/FLAG1a05a8f28 [2021-11-23 02:44:31,365 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:44:31,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:44:31,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/data/e2a16a6de/cdec728d0fff43d995823b1858c4b673/FLAG1a05a8f28 [2021-11-23 02:44:31,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/data/e2a16a6de/cdec728d0fff43d995823b1858c4b673 [2021-11-23 02:44:31,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:44:31,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:44:31,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:31,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:44:31,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:44:31,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c72e53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:31, skipping insertion in model container [2021-11-23 02:44:31,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:31" (1/1) ... [2021-11-23 02:44:31,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:44:31,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:44:36,682 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-23 02:44:36,685 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-23 02:44:36,686 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-23 02:44:36,686 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-23 02:44:36,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:36,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:44:37,378 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402143,402156] [2021-11-23 02:44:37,379 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402312,402325] [2021-11-23 02:44:37,379 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402479,402492] [2021-11-23 02:44:37,380 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_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i[402647,402660] [2021-11-23 02:44:37,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:44:37,701 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:44:37,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37 WrapperNode [2021-11-23 02:44:37,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:44:37,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:37,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:44:37,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:44:37,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:37,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,209 INFO L137 Inliner]: procedures = 553, calls = 3557, calls flagged for inlining = 272, calls inlined = 248, statements flattened = 8870 [2021-11-23 02:44:38,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:44:38,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:44:38,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:44:38,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:44:38,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:44:38,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:44:38,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:44:38,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:44:38,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (1/1) ... [2021-11-23 02:44:38,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:44:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:44:38,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:44:38,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4ca7273-6fb9-4706-aa1e-37364d4a8fcf/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:44:38,977 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2021-11-23 02:44:38,977 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2021-11-23 02:44:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2021-11-23 02:44:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2021-11-23 02:44:38,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:44:38,978 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:44:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2021-11-23 02:44:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2021-11-23 02:44:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2021-11-23 02:44:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2021-11-23 02:44:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2021-11-23 02:44:38,979 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2021-11-23 02:44:38,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:44:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:44:38,980 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2021-11-23 02:44:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2021-11-23 02:44:38,980 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2021-11-23 02:44:38,980 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2021-11-23 02:44:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:44:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:44:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-23 02:44:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-23 02:44:38,981 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2021-11-23 02:44:38,981 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2021-11-23 02:44:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2021-11-23 02:44:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2021-11-23 02:44:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2021-11-23 02:44:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2021-11-23 02:44:38,982 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2021-11-23 02:44:38,982 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2021-11-23 02:44:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2021-11-23 02:44:38,983 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2021-11-23 02:44:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2021-11-23 02:44:38,983 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2021-11-23 02:44:38,983 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2021-11-23 02:44:38,983 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2021-11-23 02:44:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2021-11-23 02:44:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2021-11-23 02:44:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2021-11-23 02:44:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2021-11-23 02:44:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_48 [2021-11-23 02:44:38,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_48 [2021-11-23 02:44:38,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_57 [2021-11-23 02:44:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_57 [2021-11-23 02:44:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2021-11-23 02:44:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2021-11-23 02:44:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 02:44:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2021-11-23 02:44:38,985 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2021-11-23 02:44:38,985 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2021-11-23 02:44:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2021-11-23 02:44:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:44:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:44:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2021-11-23 02:44:38,986 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2021-11-23 02:44:38,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:44:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:44:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:44:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2021-11-23 02:44:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2021-11-23 02:44:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-23 02:44:38,987 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-23 02:44:38,987 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2021-11-23 02:44:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2021-11-23 02:44:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 02:44:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 02:44:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:44:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:44:38,988 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2021-11-23 02:44:38,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2021-11-23 02:44:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2021-11-23 02:44:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2021-11-23 02:44:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2021-11-23 02:44:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2021-11-23 02:44:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-23 02:44:38,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_NOT_ARG_SIGN [2021-11-23 02:44:38,989 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2021-11-23 02:44:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2021-11-23 02:44:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:44:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:44:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_54 [2021-11-23 02:44:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_54 [2021-11-23 02:44:38,990 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2021-11-23 02:44:38,990 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2021-11-23 02:44:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:44:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:44:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:44:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-23 02:44:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_siglock_of_sighand_struct [2021-11-23 02:44:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2021-11-23 02:44:38,991 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2021-11-23 02:44:38,991 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2021-11-23 02:44:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2021-11-23 02:44:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:44:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:44:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:44:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2021-11-23 02:44:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2021-11-23 02:44:38,992 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2021-11-23 02:44:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2021-11-23 02:44:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:44:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2021-11-23 02:44:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2021-11-23 02:44:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2021-11-23 02:44:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2021-11-23 02:44:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:44:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:44:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2021-11-23 02:44:38,994 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2021-11-23 02:44:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2021-11-23 02:44:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2021-11-23 02:44:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2021-11-23 02:44:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2021-11-23 02:44:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2021-11-23 02:44:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2021-11-23 02:44:38,995 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:44:38,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:44:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2021-11-23 02:44:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2021-11-23 02:44:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:44:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:44:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2021-11-23 02:44:38,996 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2021-11-23 02:44:38,996 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2021-11-23 02:44:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2021-11-23 02:44:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:44:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:44:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:44:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2021-11-23 02:44:38,997 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2021-11-23 02:44:38,997 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:44:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:44:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-23 02:44:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-23 02:44:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2021-11-23 02:44:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2021-11-23 02:44:38,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:44:38,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-23 02:44:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:44:38,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:44:38,999 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:44:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2021-11-23 02:44:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2021-11-23 02:44:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 02:44:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 02:44:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2021-11-23 02:44:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2021-11-23 02:44:39,000 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2021-11-23 02:44:39,000 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2021-11-23 02:44:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2021-11-23 02:44:39,001 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2021-11-23 02:44:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-23 02:44:39,001 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-23 02:44:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:44:39,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:44:39,001 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2021-11-23 02:44:39,002 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2021-11-23 02:44:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 02:44:39,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 02:44:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2021-11-23 02:44:39,002 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2021-11-23 02:44:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2021-11-23 02:44:39,002 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2021-11-23 02:44:39,002 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2021-11-23 02:44:39,003 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2021-11-23 02:44:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:44:39,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:44:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2021-11-23 02:44:39,003 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2021-11-23 02:44:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 02:44:39,003 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 02:44:39,003 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2021-11-23 02:44:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2021-11-23 02:44:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 02:44:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-11-23 02:44:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2021-11-23 02:44:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2021-11-23 02:44:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2021-11-23 02:44:39,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2021-11-23 02:44:39,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:44:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:44:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2021-11-23 02:44:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2021-11-23 02:44:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:44:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:44:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2021-11-23 02:44:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2021-11-23 02:44:39,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:44:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:44:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2021-11-23 02:44:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2021-11-23 02:44:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:44:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:44:39,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:44:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-23 02:44:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2021-11-23 02:44:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2021-11-23 02:44:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2021-11-23 02:44:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2021-11-23 02:44:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-23 02:44:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-23 02:44:39,007 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-23 02:44:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-23 02:44:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2021-11-23 02:44:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2021-11-23 02:44:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2021-11-23 02:44:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2021-11-23 02:44:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:44:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:44:39,008 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2021-11-23 02:44:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2021-11-23 02:44:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:44:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:44:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2021-11-23 02:44:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2021-11-23 02:44:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:44:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:44:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2021-11-23 02:44:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2021-11-23 02:44:39,009 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2021-11-23 02:44:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2021-11-23 02:44:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2021-11-23 02:44:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2021-11-23 02:44:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2021-11-23 02:44:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2021-11-23 02:44:39,010 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-11-23 02:44:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-11-23 02:44:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2021-11-23 02:44:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2021-11-23 02:44:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:44:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 02:44:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 02:44:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2021-11-23 02:44:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2021-11-23 02:44:39,011 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-23 02:44:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-23 02:44:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2021-11-23 02:44:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2021-11-23 02:44:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:44:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2021-11-23 02:44:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2021-11-23 02:44:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2021-11-23 02:44:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2021-11-23 02:44:39,012 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:44:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2021-11-23 02:44:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:44:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:44:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:44:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 02:44:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 02:44:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2021-11-23 02:44:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2021-11-23 02:44:39,013 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:44:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:44:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:44:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:44:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2021-11-23 02:44:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2021-11-23 02:44:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2021-11-23 02:44:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2021-11-23 02:44:39,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:44:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:44:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_55 [2021-11-23 02:44:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_55 [2021-11-23 02:44:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 02:44:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 02:44:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2021-11-23 02:44:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2021-11-23 02:44:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_49 [2021-11-23 02:44:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_49 [2021-11-23 02:44:39,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-23 02:44:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-23 02:44:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2021-11-23 02:44:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2021-11-23 02:44:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2021-11-23 02:44:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2021-11-23 02:44:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:44:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:44:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2021-11-23 02:44:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2021-11-23 02:44:39,016 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2021-11-23 02:44:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2021-11-23 02:44:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2021-11-23 02:44:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2021-11-23 02:44:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-23 02:44:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-23 02:44:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-23 02:44:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2021-11-23 02:44:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:44:39,017 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2021-11-23 02:44:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2021-11-23 02:44:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2021-11-23 02:44:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2021-11-23 02:44:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:44:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:44:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2021-11-23 02:44:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2021-11-23 02:44:39,018 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2021-11-23 02:44:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2021-11-23 02:44:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2021-11-23 02:44:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2021-11-23 02:44:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_78 [2021-11-23 02:44:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_78 [2021-11-23 02:44:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2021-11-23 02:44:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2021-11-23 02:44:39,019 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:44:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:44:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2021-11-23 02:44:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2021-11-23 02:44:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2021-11-23 02:44:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2021-11-23 02:44:39,020 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2021-11-23 02:44:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2021-11-23 02:44:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2021-11-23 02:44:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2021-11-23 02:44:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 02:44:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 02:44:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:44:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:44:39,021 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 02:44:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 02:44:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2021-11-23 02:44:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2021-11-23 02:44:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:44:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:44:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2021-11-23 02:44:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2021-11-23 02:44:39,022 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:44:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:44:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:44:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 02:44:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2021-11-23 02:44:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2021-11-23 02:44:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:44:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2021-11-23 02:44:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2021-11-23 02:44:39,023 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2021-11-23 02:44:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2021-11-23 02:44:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2021-11-23 02:44:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2021-11-23 02:44:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:44:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:44:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-23 02:44:39,024 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-11-23 02:44:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-11-23 02:44:40,510 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:44:40,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:44:40,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:44:41,971 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2021-11-23 02:44:50,805 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:44:51,071 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:44:53,016 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:44:53,017 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 02:44:53,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:53 BoogieIcfgContainer [2021-11-23 02:44:53,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:44:53,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:44:53,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:44:53,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:44:53,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:31" (1/3) ... [2021-11-23 02:44:53,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd55d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:53, skipping insertion in model container [2021-11-23 02:44:53,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:37" (2/3) ... [2021-11-23 02:44:53,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd55d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:53, skipping insertion in model container [2021-11-23 02:44:53,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:53" (3/3) ... [2021-11-23 02:44:53,037 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-autofs4-autofs4.cil.i [2021-11-23 02:44:53,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:44:53,044 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:44:53,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:44:53,146 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:44:53,146 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:44:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) [2021-11-23 02:44:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-23 02:44:53,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:44:53,281 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:44:53,282 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:44:53,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:44:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1239138158, now seen corresponding path program 1 times [2021-11-23 02:44:53,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:44:53,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597083335] [2021-11-23 02:44:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:44:53,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:44:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:44:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-23 02:44:54,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:44:54,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597083335] [2021-11-23 02:44:54,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597083335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:44:54,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:44:54,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:44:54,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992001228] [2021-11-23 02:44:54,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:44:54,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:44:54,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:44:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:44:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:44:54,310 INFO L87 Difference]: Start difference. First operand has 2633 states, 1548 states have (on average 1.3152454780361758) internal successors, (2036), 1601 states have internal predecessors, (2036), 917 states have call successors, (917), 165 states have call predecessors, (917), 164 states have return successors, (906), 900 states have call predecessors, (906), 906 states have call successors, (906) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:44:56,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:44:59,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:02,242 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:03,512 INFO L93 Difference]: Finished difference Result 7432 states and 11202 transitions. [2021-11-23 02:45:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2021-11-23 02:45:03,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:03,591 INFO L225 Difference]: With dead ends: 7432 [2021-11-23 02:45:03,591 INFO L226 Difference]: Without dead ends: 4872 [2021-11-23 02:45:03,625 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:03,630 INFO L933 BasicCegarLoop]: 4810 mSDtfsCounter, 3326 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 8201 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:03,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 8201 Invalid, 899 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 885 Invalid, 3 Unknown, 0 Unchecked, 8.5s Time] [2021-11-23 02:45:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4872 states. [2021-11-23 02:45:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4872 to 4864. [2021-11-23 02:45:04,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4864 states, 2873 states have (on average 1.3073442394709363) internal successors, (3756), 2967 states have internal predecessors, (3756), 1668 states have call successors, (1668), 320 states have call predecessors, (1668), 319 states have return successors, (1671), 1651 states have call predecessors, (1671), 1664 states have call successors, (1671) [2021-11-23 02:45:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4864 states to 4864 states and 7095 transitions. [2021-11-23 02:45:04,128 INFO L78 Accepts]: Start accepts. Automaton has 4864 states and 7095 transitions. Word has length 465 [2021-11-23 02:45:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:04,132 INFO L470 AbstractCegarLoop]: Abstraction has 4864 states and 7095 transitions. [2021-11-23 02:45:04,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-23 02:45:04,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4864 states and 7095 transitions. [2021-11-23 02:45:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-23 02:45:04,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:04,155 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:04,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:45:04,155 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1914525451, now seen corresponding path program 1 times [2021-11-23 02:45:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:04,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560237508] [2021-11-23 02:45:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:04,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:04,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-23 02:45:04,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:04,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560237508] [2021-11-23 02:45:04,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560237508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:04,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:04,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:04,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302929037] [2021-11-23 02:45:04,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:04,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:04,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:04,689 INFO L87 Difference]: Start difference. First operand 4864 states and 7095 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:08,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:10,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:11,723 INFO L93 Difference]: Finished difference Result 11628 states and 16913 transitions. [2021-11-23 02:45:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 481 [2021-11-23 02:45:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:11,810 INFO L225 Difference]: With dead ends: 11628 [2021-11-23 02:45:11,810 INFO L226 Difference]: Without dead ends: 6853 [2021-11-23 02:45:11,847 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:11,853 INFO L933 BasicCegarLoop]: 4158 mSDtfsCounter, 3100 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 7540 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:11,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3102 Valid, 7540 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 832 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2021-11-23 02:45:11,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2021-11-23 02:45:12,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6828. [2021-11-23 02:45:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6828 states, 4029 states have (on average 1.3023082650781832) internal successors, (5247), 4167 states have internal predecessors, (5247), 2324 states have call successors, (2324), 472 states have call predecessors, (2324), 471 states have return successors, (2331), 2298 states have call predecessors, (2331), 2320 states have call successors, (2331) [2021-11-23 02:45:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6828 states to 6828 states and 9902 transitions. [2021-11-23 02:45:12,548 INFO L78 Accepts]: Start accepts. Automaton has 6828 states and 9902 transitions. Word has length 481 [2021-11-23 02:45:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:12,551 INFO L470 AbstractCegarLoop]: Abstraction has 6828 states and 9902 transitions. [2021-11-23 02:45:12,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 6828 states and 9902 transitions. [2021-11-23 02:45:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-23 02:45:12,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:12,576 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:12,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:45:12,577 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:12,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash 238087791, now seen corresponding path program 1 times [2021-11-23 02:45:12,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:12,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238992012] [2021-11-23 02:45:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:12,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-23 02:45:13,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:13,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238992012] [2021-11-23 02:45:13,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238992012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:13,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:13,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:13,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944271528] [2021-11-23 02:45:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:13,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:13,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:13,036 INFO L87 Difference]: Start difference. First operand 6828 states and 9902 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:16,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:19,842 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:20,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:20,544 INFO L93 Difference]: Finished difference Result 17737 states and 25681 transitions. [2021-11-23 02:45:20,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:20,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2021-11-23 02:45:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:20,667 INFO L225 Difference]: With dead ends: 17737 [2021-11-23 02:45:20,667 INFO L226 Difference]: Without dead ends: 10998 [2021-11-23 02:45:20,716 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:20,721 INFO L933 BasicCegarLoop]: 4193 mSDtfsCounter, 3228 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3230 SdHoareTripleChecker+Valid, 7574 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:20,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3230 Valid, 7574 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 838 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2021-11-23 02:45:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10998 states. [2021-11-23 02:45:21,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10998 to 10974. [2021-11-23 02:45:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10974 states, 6494 states have (on average 1.301047120418848) internal successors, (8449), 6717 states have internal predecessors, (8449), 3691 states have call successors, (3691), 786 states have call predecessors, (3691), 785 states have return successors, (3714), 3648 states have call predecessors, (3714), 3687 states have call successors, (3714) [2021-11-23 02:45:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10974 states to 10974 states and 15854 transitions. [2021-11-23 02:45:21,817 INFO L78 Accepts]: Start accepts. Automaton has 10974 states and 15854 transitions. Word has length 480 [2021-11-23 02:45:21,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:21,820 INFO L470 AbstractCegarLoop]: Abstraction has 10974 states and 15854 transitions. [2021-11-23 02:45:21,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 10974 states and 15854 transitions. [2021-11-23 02:45:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2021-11-23 02:45:21,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:21,849 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:21,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:45:21,850 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:21,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:21,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1491294399, now seen corresponding path program 1 times [2021-11-23 02:45:21,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:21,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057223102] [2021-11-23 02:45:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:21,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2021-11-23 02:45:22,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:22,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057223102] [2021-11-23 02:45:22,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057223102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:22,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:22,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:22,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157859125] [2021-11-23 02:45:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:22,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:22,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:22,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:22,398 INFO L87 Difference]: Start difference. First operand 10974 states and 15854 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:25,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:27,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:29,198 INFO L93 Difference]: Finished difference Result 29400 states and 42344 transitions. [2021-11-23 02:45:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:29,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 480 [2021-11-23 02:45:29,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:29,477 INFO L225 Difference]: With dead ends: 29400 [2021-11-23 02:45:29,477 INFO L226 Difference]: Without dead ends: 18515 [2021-11-23 02:45:29,532 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:29,533 INFO L933 BasicCegarLoop]: 4145 mSDtfsCounter, 2996 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3000 SdHoareTripleChecker+Valid, 7554 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:29,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3000 Valid, 7554 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 806 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 02:45:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18515 states. [2021-11-23 02:45:30,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18515 to 18481. [2021-11-23 02:45:30,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18481 states, 10924 states have (on average 1.298333943610399) internal successors, (14183), 11285 states have internal predecessors, (14183), 6163 states have call successors, (6163), 1391 states have call predecessors, (6163), 1390 states have return successors, (6214), 6091 states have call predecessors, (6214), 6159 states have call successors, (6214) [2021-11-23 02:45:30,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18481 states to 18481 states and 26560 transitions. [2021-11-23 02:45:30,948 INFO L78 Accepts]: Start accepts. Automaton has 18481 states and 26560 transitions. Word has length 480 [2021-11-23 02:45:30,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:30,950 INFO L470 AbstractCegarLoop]: Abstraction has 18481 states and 26560 transitions. [2021-11-23 02:45:30,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2021-11-23 02:45:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 18481 states and 26560 transitions. [2021-11-23 02:45:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2021-11-23 02:45:30,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:30,966 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:30,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:45:30,967 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1285759269, now seen corresponding path program 1 times [2021-11-23 02:45:30,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:30,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580702774] [2021-11-23 02:45:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:30,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7660 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7660 trivial. 0 not checked. [2021-11-23 02:45:31,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:31,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580702774] [2021-11-23 02:45:31,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580702774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:31,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:31,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:31,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17849849] [2021-11-23 02:45:31,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:31,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:31,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:31,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:31,506 INFO L87 Difference]: Start difference. First operand 18481 states and 26560 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-23 02:45:33,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:36,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:38,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:40,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:41,948 INFO L93 Difference]: Finished difference Result 50316 states and 72209 transitions. [2021-11-23 02:45:41,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:41,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 484 [2021-11-23 02:45:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:42,173 INFO L225 Difference]: With dead ends: 50316 [2021-11-23 02:45:42,173 INFO L226 Difference]: Without dead ends: 31924 [2021-11-23 02:45:42,382 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:42,383 INFO L933 BasicCegarLoop]: 4168 mSDtfsCounter, 2962 mSDsluCounter, 3777 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2967 SdHoareTripleChecker+Valid, 7570 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:42,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2967 Valid, 7570 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 815 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 02:45:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31924 states. [2021-11-23 02:45:44,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31924 to 31873. [2021-11-23 02:45:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31873 states, 18859 states have (on average 1.2975767538045495) internal successors, (24471), 19456 states have internal predecessors, (24471), 10548 states have call successors, (10548), 2463 states have call predecessors, (10548), 2462 states have return successors, (10661), 10393 states have call predecessors, (10661), 10544 states have call successors, (10661) [2021-11-23 02:45:44,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31873 states to 31873 states and 45680 transitions. [2021-11-23 02:45:44,596 INFO L78 Accepts]: Start accepts. Automaton has 31873 states and 45680 transitions. Word has length 484 [2021-11-23 02:45:44,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:44,598 INFO L470 AbstractCegarLoop]: Abstraction has 31873 states and 45680 transitions. [2021-11-23 02:45:44,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2021-11-23 02:45:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 31873 states and 45680 transitions. [2021-11-23 02:45:44,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2021-11-23 02:45:44,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:44,609 INFO L514 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:45:44,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:44,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash 207907274, now seen corresponding path program 1 times [2021-11-23 02:45:44,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293166454] [2021-11-23 02:45:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:44,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7658 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7658 trivial. 0 not checked. [2021-11-23 02:45:45,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:45,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293166454] [2021-11-23 02:45:45,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293166454] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:45,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:45,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:45:45,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412241411] [2021-11-23 02:45:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:45,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:45:45,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:45:45,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:45:45,191 INFO L87 Difference]: Start difference. First operand 31873 states and 45680 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-23 02:45:47,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:52,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:45:54,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:45:54,054 INFO L93 Difference]: Finished difference Result 85701 states and 122606 transitions. [2021-11-23 02:45:54,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:45:54,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) Word has length 511 [2021-11-23 02:45:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:45:54,692 INFO L225 Difference]: With dead ends: 85701 [2021-11-23 02:45:54,692 INFO L226 Difference]: Without dead ends: 53917 [2021-11-23 02:45:54,839 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:45:54,841 INFO L933 BasicCegarLoop]: 5173 mSDtfsCounter, 3247 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3249 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:45:54,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3249 Valid, 8558 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 947 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:45:54,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53917 states. [2021-11-23 02:45:57,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53917 to 53845. [2021-11-23 02:45:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53845 states, 32015 states have (on average 1.2956739028580353) internal successors, (41481), 33065 states have internal predecessors, (41481), 17535 states have call successors, (17535), 4304 states have call predecessors, (17535), 4291 states have return successors, (17797), 17241 states have call predecessors, (17797), 17531 states have call successors, (17797) [2021-11-23 02:45:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53845 states to 53845 states and 76813 transitions. [2021-11-23 02:45:58,072 INFO L78 Accepts]: Start accepts. Automaton has 53845 states and 76813 transitions. Word has length 511 [2021-11-23 02:45:58,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:45:58,073 INFO L470 AbstractCegarLoop]: Abstraction has 53845 states and 76813 transitions. [2021-11-23 02:45:58,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (58), 2 states have call predecessors, (58), 1 states have return successors, (53), 3 states have call predecessors, (53), 3 states have call successors, (53) [2021-11-23 02:45:58,074 INFO L276 IsEmpty]: Start isEmpty. Operand 53845 states and 76813 transitions. [2021-11-23 02:45:58,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-23 02:45:58,083 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:45:58,083 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:45:58,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:45:58,084 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:45:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:45:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2127335379, now seen corresponding path program 1 times [2021-11-23 02:45:58,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:45:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517485234] [2021-11-23 02:45:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:45:58,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:45:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:45:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-23 02:45:58,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:45:58,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517485234] [2021-11-23 02:45:58,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517485234] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:45:58,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:45:58,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:45:58,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537753348] [2021-11-23 02:45:58,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:45:58,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:45:58,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:45:58,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:45:58,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:45:58,686 INFO L87 Difference]: Start difference. First operand 53845 states and 76813 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-23 02:46:01,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:03,706 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:06,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:10,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:12,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:15,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:17,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:19,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:20,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:20,770 INFO L93 Difference]: Finished difference Result 55183 states and 78673 transitions. [2021-11-23 02:46:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:46:20,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2021-11-23 02:46:20,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:21,117 INFO L225 Difference]: With dead ends: 55183 [2021-11-23 02:46:21,117 INFO L226 Difference]: Without dead ends: 55181 [2021-11-23 02:46:21,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:46:21,149 INFO L933 BasicCegarLoop]: 4491 mSDtfsCounter, 3406 mSDsluCounter, 11929 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3419 SdHoareTripleChecker+Valid, 15283 SdHoareTripleChecker+Invalid, 1624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:21,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3419 Valid, 15283 Invalid, 1624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1615 Invalid, 8 Unknown, 0 Unchecked, 20.5s Time] [2021-11-23 02:46:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55181 states. [2021-11-23 02:46:23,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55181 to 55139. [2021-11-23 02:46:23,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55139 states, 32754 states have (on average 1.2947426268547353) internal successors, (42408), 33842 states have internal predecessors, (42408), 17950 states have call successors, (17950), 4431 states have call predecessors, (17950), 4431 states have return successors, (18250), 17654 states have call predecessors, (18250), 17946 states have call successors, (18250) [2021-11-23 02:46:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55139 states to 55139 states and 78608 transitions. [2021-11-23 02:46:24,100 INFO L78 Accepts]: Start accepts. Automaton has 55139 states and 78608 transitions. Word has length 515 [2021-11-23 02:46:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:24,102 INFO L470 AbstractCegarLoop]: Abstraction has 55139 states and 78608 transitions. [2021-11-23 02:46:24,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2021-11-23 02:46:24,103 INFO L276 IsEmpty]: Start isEmpty. Operand 55139 states and 78608 transitions. [2021-11-23 02:46:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2021-11-23 02:46:24,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:24,114 INFO L514 BasicCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:24,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:46:24,115 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:46:24,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 851809935, now seen corresponding path program 1 times [2021-11-23 02:46:24,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:24,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248263998] [2021-11-23 02:46:24,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:24,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:24,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2021-11-23 02:46:24,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:24,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248263998] [2021-11-23 02:46:24,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248263998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:24,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:24,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:46:25,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908722635] [2021-11-23 02:46:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:25,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:25,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:25,142 INFO L87 Difference]: Start difference. First operand 55139 states and 78608 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 02:46:27,953 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:32,581 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:46:35,097 INFO L93 Difference]: Finished difference Result 97690 states and 138747 transitions. [2021-11-23 02:46:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:46:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2021-11-23 02:46:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:46:35,634 INFO L225 Difference]: With dead ends: 97690 [2021-11-23 02:46:35,634 INFO L226 Difference]: Without dead ends: 97688 [2021-11-23 02:46:35,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:46:35,681 INFO L933 BasicCegarLoop]: 4476 mSDtfsCounter, 2975 mSDsluCounter, 13268 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2984 SdHoareTripleChecker+Valid, 16477 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:46:35,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2984 Valid, 16477 Invalid, 1735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1730 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2021-11-23 02:46:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97688 states. [2021-11-23 02:46:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97688 to 97649. [2021-11-23 02:46:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97649 states, 58191 states have (on average 1.2934646251138493) internal successors, (75268), 60235 states have internal predecessors, (75268), 31251 states have call successors, (31251), 8262 states have call predecessors, (31251), 8203 states have return successors, (32190), 30478 states have call predecessors, (32190), 31243 states have call successors, (32190) [2021-11-23 02:46:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97649 states to 97649 states and 138709 transitions. [2021-11-23 02:46:41,499 INFO L78 Accepts]: Start accepts. Automaton has 97649 states and 138709 transitions. Word has length 520 [2021-11-23 02:46:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:46:41,503 INFO L470 AbstractCegarLoop]: Abstraction has 97649 states and 138709 transitions. [2021-11-23 02:46:41,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-23 02:46:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 97649 states and 138709 transitions. [2021-11-23 02:46:41,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2021-11-23 02:46:41,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:46:41,517 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:46:41,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 02:46:41,518 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:46:41,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:46:41,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1008617380, now seen corresponding path program 1 times [2021-11-23 02:46:41,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:46:41,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931887142] [2021-11-23 02:46:41,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:46:41,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:46:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:46:42,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8070 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8066 trivial. 0 not checked. [2021-11-23 02:46:42,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:46:42,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931887142] [2021-11-23 02:46:42,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931887142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:46:42,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:46:42,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:46:42,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779488037] [2021-11-23 02:46:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:46:42,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:46:42,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:46:42,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:46:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:46:42,030 INFO L87 Difference]: Start difference. First operand 97649 states and 138709 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:46:44,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:48,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:50,266 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:54,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:56,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:46:58,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:00,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:02,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:05,199 INFO L93 Difference]: Finished difference Result 97737 states and 138841 transitions. [2021-11-23 02:47:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:47:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 534 [2021-11-23 02:47:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:05,659 INFO L225 Difference]: With dead ends: 97737 [2021-11-23 02:47:05,659 INFO L226 Difference]: Without dead ends: 97735 [2021-11-23 02:47:05,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:47:05,695 INFO L933 BasicCegarLoop]: 4375 mSDtfsCounter, 3400 mSDsluCounter, 11669 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 14929 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:05,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3411 Valid, 14929 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1582 Invalid, 8 Unknown, 0 Unchecked, 20.1s Time] [2021-11-23 02:47:05,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97735 states. [2021-11-23 02:47:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97735 to 97693. [2021-11-23 02:47:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97693 states, 58221 states have (on average 1.2933134092509575) internal successors, (75298), 60277 states have internal predecessors, (75298), 31251 states have call successors, (31251), 8264 states have call predecessors, (31251), 8217 states have return successors, (32226), 30478 states have call predecessors, (32226), 31243 states have call successors, (32226) [2021-11-23 02:47:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97693 states to 97693 states and 138775 transitions. [2021-11-23 02:47:11,058 INFO L78 Accepts]: Start accepts. Automaton has 97693 states and 138775 transitions. Word has length 534 [2021-11-23 02:47:11,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:11,059 INFO L470 AbstractCegarLoop]: Abstraction has 97693 states and 138775 transitions. [2021-11-23 02:47:11,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-23 02:47:11,060 INFO L276 IsEmpty]: Start isEmpty. Operand 97693 states and 138775 transitions. [2021-11-23 02:47:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-23 02:47:11,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:11,075 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:11,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:47:11,076 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:47:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 886338272, now seen corresponding path program 1 times [2021-11-23 02:47:11,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:11,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890814138] [2021-11-23 02:47:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:11,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:11,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8081 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8075 trivial. 0 not checked. [2021-11-23 02:47:11,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:11,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890814138] [2021-11-23 02:47:11,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890814138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:11,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:11,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:11,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557237547] [2021-11-23 02:47:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:11,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:11,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:11,555 INFO L87 Difference]: Start difference. First operand 97693 states and 138775 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:47:14,237 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:17,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:19,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:22,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:25,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:25,883 INFO L93 Difference]: Finished difference Result 97717 states and 138799 transitions. [2021-11-23 02:47:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:47:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 540 [2021-11-23 02:47:25,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:26,283 INFO L225 Difference]: With dead ends: 97717 [2021-11-23 02:47:26,283 INFO L226 Difference]: Without dead ends: 97715 [2021-11-23 02:47:26,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:47:26,320 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 3400 mSDsluCounter, 11660 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3409 SdHoareTripleChecker+Valid, 14921 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:26,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3409 Valid, 14921 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1583 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2021-11-23 02:47:26,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97715 states. [2021-11-23 02:47:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97715 to 97709. [2021-11-23 02:47:30,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97709 states, 58231 states have (on average 1.2932630385876938) internal successors, (75308), 60291 states have internal predecessors, (75308), 31251 states have call successors, (31251), 8266 states have call predecessors, (31251), 8223 states have return successors, (32234), 30478 states have call predecessors, (32234), 31243 states have call successors, (32234) [2021-11-23 02:47:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97709 states to 97709 states and 138793 transitions. [2021-11-23 02:47:31,698 INFO L78 Accepts]: Start accepts. Automaton has 97709 states and 138793 transitions. Word has length 540 [2021-11-23 02:47:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:47:31,699 INFO L470 AbstractCegarLoop]: Abstraction has 97709 states and 138793 transitions. [2021-11-23 02:47:31,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-23 02:47:31,699 INFO L276 IsEmpty]: Start isEmpty. Operand 97709 states and 138793 transitions. [2021-11-23 02:47:31,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-11-23 02:47:31,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:47:31,718 INFO L514 BasicCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:47:31,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:47:31,719 INFO L402 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_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-23 02:47:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:47:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash 926978812, now seen corresponding path program 1 times [2021-11-23 02:47:31,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:47:31,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035544910] [2021-11-23 02:47:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:47:31,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:47:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:47:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8095 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8087 trivial. 0 not checked. [2021-11-23 02:47:32,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:47:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035544910] [2021-11-23 02:47:32,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035544910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:47:32,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:47:32,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:47:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040907302] [2021-11-23 02:47:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:47:32,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:47:32,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:47:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:47:32,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:47:32,230 INFO L87 Difference]: Start difference. First operand 97709 states and 138793 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-23 02:47:34,892 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:38,369 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:41,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:43,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:45,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:48,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:50,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:52,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:47:57,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:47:57,178 INFO L93 Difference]: Finished difference Result 185650 states and 264193 transitions. [2021-11-23 02:47:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:47:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 545 [2021-11-23 02:47:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:47:58,330 INFO L225 Difference]: With dead ends: 185650 [2021-11-23 02:47:58,330 INFO L226 Difference]: Without dead ends: 185648 [2021-11-23 02:47:58,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:47:58,400 INFO L933 BasicCegarLoop]: 4726 mSDtfsCounter, 3427 mSDsluCounter, 13737 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3431 SdHoareTripleChecker+Valid, 17133 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:47:58,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3431 Valid, 17133 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 18.7s Time] [2021-11-23 02:47:58,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185648 states.