/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-03 07:19:36,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-03 07:19:36,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-03 07:19:36,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-03 07:19:36,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-03 07:19:36,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-03 07:19:36,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-03 07:19:36,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-03 07:19:36,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-03 07:19:36,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-03 07:19:36,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-03 07:19:36,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-03 07:19:36,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-03 07:19:36,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-03 07:19:36,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-03 07:19:36,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-03 07:19:36,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-03 07:19:36,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-03 07:19:36,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-03 07:19:36,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-03 07:19:36,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-03 07:19:36,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-03 07:19:36,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-03 07:19:36,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-03 07:19:36,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-03 07:19:36,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-03 07:19:36,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-03 07:19:36,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-03 07:19:36,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-03 07:19:36,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-03 07:19:36,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-03 07:19:36,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-03 07:19:36,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-03 07:19:36,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-03 07:19:36,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-03 07:19:36,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-03 07:19:36,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-03 07:19:36,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-03 07:19:36,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-03 07:19:36,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-03 07:19:36,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-03 07:19:36,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-03 07:19:36,494 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-03 07:19:36,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-03 07:19:36,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-03 07:19:36,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-03 07:19:36,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-03 07:19:36,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-03 07:19:36,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-03 07:19:36,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-03 07:19:36,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-03 07:19:36,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-03 07:19:36,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 07:19:36,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-03 07:19:36,497 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-03 07:19:36,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-03 07:19:36,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-03 07:19:36,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-03 07:19:36,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-03 07:19:36,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-03 07:19:36,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-03 07:19:36,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-03 07:19:36,688 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-03 07:19:36,689 INFO L275 PluginConnector]: CDTParser initialized [2023-04-03 07:19:36,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2023-04-03 07:19:37,709 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-03 07:19:38,059 INFO L351 CDTParser]: Found 1 translation units. [2023-04-03 07:19:38,060 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2023-04-03 07:19:38,090 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b4815ec/6be9b62c74364b0dae78ef3fc7effd6f/FLAGa363e5f2c [2023-04-03 07:19:38,106 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10b4815ec/6be9b62c74364b0dae78ef3fc7effd6f [2023-04-03 07:19:38,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-03 07:19:38,110 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-03 07:19:38,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-03 07:19:38,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-03 07:19:38,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-03 07:19:38,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 07:19:38" (1/1) ... [2023-04-03 07:19:38,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4375843e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:38, skipping insertion in model container [2023-04-03 07:19:38,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.04 07:19:38" (1/1) ... [2023-04-03 07:19:38,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-03 07:19:38,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-03 07:19:39,291 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2023-04-03 07:19:39,295 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2023-04-03 07:19:39,295 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2023-04-03 07:19:39,296 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2023-04-03 07:19:39,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 07:19:39,345 INFO L203 MainTranslator]: Completed pre-run [2023-04-03 07:19:39,546 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193323,193336] [2023-04-03 07:19:39,547 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193489,193502] [2023-04-03 07:19:39,548 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193653,193666] [2023-04-03 07:19:39,548 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i[193818,193831] [2023-04-03 07:19:39,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-03 07:19:39,611 WARN L667 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 07:19:39,611 WARN L667 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-04-03 07:19:39,616 INFO L208 MainTranslator]: Completed translation [2023-04-03 07:19:39,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39 WrapperNode [2023-04-03 07:19:39,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-03 07:19:39,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-03 07:19:39,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-03 07:19:39,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-03 07:19:39,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-03 07:19:39,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-03 07:19:39,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-03 07:19:39,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-03 07:19:39,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (1/1) ... [2023-04-03 07:19:39,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-03 07:19:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 07:19:39,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-03 07:19:39,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-04-03 07:19:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2023-04-03 07:19:39,896 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure allow_write_access [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_binfmt [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure string_unescape_inplace [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure check_file [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure load_misc_binary [2023-04-03 07:19:39,897 INFO L138 BoogieDeclarations]: Found implementation of procedure scanarg [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure check_special_flags [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure create_entry [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_command [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_status [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_get_inode [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_evict_inode [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_node [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_read [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_entry_write [2023-04-03 07:19:39,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_register_write [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_read [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_status_write [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_fill_super [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure bm_mount [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure init_misc_binfmt [2023-04-03 07:19:39,899 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_misc_binfmt [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_init_init_misc_binfmt_7_11 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_allocate_external_0 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_deregister_5_1 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_deregister_dummy_resourceless_instance_5_7_4 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_deregister_file_operations_instance_1_7_5 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_register_6_2 [2023-04-03 07:19:39,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_register_dummy_resourceless_instance_5_7_6 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_register_file_operations_instance_1_7_7 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_3_3 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_3_7 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_3_8 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_4_3 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dummy_resourceless_instance_callback_4_7 [2023-04-03 07:19:39,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_entry_EMGentry_7 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_file_operations_instance_0 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_file_operations_instance_1 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_file_operations_instance_2 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_0_22 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_0_5 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_1_22 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_1_5 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_2_22 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_callback_2_5 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_probe_0_12 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_probe_1_12 [2023-04-03 07:19:39,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_probe_2_12 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_write_0_4 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_write_1_4 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_instance_write_2_4 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_external_data [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_filesystem [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_struct_linux_binfmt_dummy_resourceless_instance_3 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_struct_super_operations_dummy_resourceless_instance_4 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2023-04-03 07:19:39,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_15 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_0_6 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_15 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_1_6 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_15 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_2_6 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_3_1 [2023-04-03 07:19:39,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_3_5 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_4_1 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_automaton_state_4_5 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_filesystem [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_13 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_14 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_15 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_16 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_17 [2023-04-03 07:19:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_18 [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_filesystem_19 [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_filesystem_20 [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spi_alloc_master [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2023-04-03 07:19:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_init [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2023-04-03 07:19:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc [2023-04-03 07:19:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2023-04-03 07:19:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-04-03 07:19:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-04-03 07:19:39,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2023-04-03 07:19:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-03 07:19:39,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_calloc [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xzalloc [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_thread_create [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_thread_create_N [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_thread_join [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_thread_join_N [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_i_mutex_of_inode [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2023-04-03 07:19:39,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_device [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 07:19:39,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __get_free_pages [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __register_binfmt [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2023-04-03 07:19:39,917 INFO L138 BoogieDeclarations]: Found implementation of procedure bprm_change_interp [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_inode [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_strings_kernel [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure current_fs_time [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure drop_nlink [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fd_install [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2023-04-03 07:19:39,918 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_ino [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unused_fd_flags [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure iput [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kernel_read [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_litter_super [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_after_alloc [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure lockref_get [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure lookup_one_len [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure mount_single [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure new_inode [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure open_exec [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_binprm [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure register_filesystem [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_arg_zero [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure search_binary_handler [2023-04-03 07:19:39,919 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_fill_super [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_pin_fs [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_read_from_buffer [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_release_fs [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure string_unescape [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure sys_close [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_binfmt [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_filesystem [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure would_dump [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-04-03 07:19:39,920 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-04-03 07:19:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-04-03 07:19:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2023-04-03 07:19:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2023-04-03 07:19:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2023-04-03 07:19:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_13 [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_15 [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_17 [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_init [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2023-04-03 07:19:39,921 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2023-04-03 07:19:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2023-04-03 07:19:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2023-04-03 07:19:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-04-03 07:19:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2023-04-03 07:19:39,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-03 07:19:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-04-03 07:19:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2023-04-03 07:19:39,925 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_14 [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_16 [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_18 [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure lockref_get [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2023-04-03 07:19:39,926 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure current_fs_time [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure drop_nlink [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure mount_single [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure kill_litter_super [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure register_filesystem [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_filesystem_19 [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_filesystem [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_filesystem_20 [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure iput [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure allow_write_access [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure kernel_read [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure open_exec [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_ino [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure clear_inode [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure new_inode [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2023-04-03 07:19:39,927 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_fill_super [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_pin_fs [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_release_fs [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure __get_free_pages [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure __register_binfmt [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure insert_binfmt [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_binfmt [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_binprm [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure remove_arg_zero [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure search_binary_handler [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure would_dump [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure bprm_change_interp [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure copy_strings_kernel [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-04-03 07:19:39,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure string_unescape [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure string_unescape_inplace [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_unused_fd_flags [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure fd_install [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure lookup_one_len [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure sys_close [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure check_file [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure load_misc_binary [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure scanarg [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure check_special_flags [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure create_entry [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure parse_command [2023-04-03 07:19:39,929 INFO L130 BoogieDeclarations]: Found specification of procedure entry_status [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_get_inode [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_evict_inode [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure kill_node [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_read [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_entry_write [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_register_write [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_read [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_status_write [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_fill_super [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure bm_mount [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure init_misc_binfmt [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure exit_misc_binfmt [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_misc_binfmt_7_2 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_init_init_misc_binfmt_7_11 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_allocate_external_0 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_deregister_5_1 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_deregister_dummy_resourceless_instance_5_7_4 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_deregister_file_operations_instance_1_7_5 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_register_6_2 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_register_dummy_resourceless_instance_5_7_6 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_register_file_operations_instance_1_7_7 [2023-04-03 07:19:39,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_3_3 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_3_7 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_3_8 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_4_3 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dummy_resourceless_instance_callback_4_7 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_entry_EMGentry_7 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_file_operations_instance_0 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_file_operations_instance_1 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_file_operations_instance_2 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_0_22 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_0_5 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_1_22 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_1_5 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_2_22 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_callback_2_5 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_probe_0_12 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_probe_1_12 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_probe_2_12 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_write_0_4 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_write_1_4 [2023-04-03 07:19:39,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_instance_write_2_4 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_external_data [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_filesystem [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_struct_linux_binfmt_dummy_resourceless_instance_3 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_struct_super_operations_dummy_resourceless_instance_4 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_15 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_0_6 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_15 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_1_6 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_15 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_2_6 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_3_1 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_3_5 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_4_1 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_automaton_state_4_5 [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_filesystem [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-04-03 07:19:39,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xzalloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spi_alloc_master [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_after_alloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_calloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-04-03 07:19:39,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_thread_create [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_thread_create_N [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_thread_join [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_thread_join_N [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_try [2023-04-03 07:19:39,934 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_i_mutex_of_inode [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-03 07:19:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-03 07:19:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-03 07:19:40,523 INFO L236 CfgBuilder]: Building ICFG [2023-04-03 07:19:40,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-03 07:19:40,626 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-04-03 07:19:41,843 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint mainFINAL: assume true; [2023-04-03 07:19:42,661 INFO L277 CfgBuilder]: Performing block encoding [2023-04-03 07:19:43,105 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-03 07:19:43,105 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-03 07:19:43,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 07:19:43 BoogieIcfgContainer [2023-04-03 07:19:43,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-03 07:19:43,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-03 07:19:43,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-03 07:19:43,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-03 07:19:43,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.04 07:19:38" (1/3) ... [2023-04-03 07:19:43,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875e664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 07:19:43, skipping insertion in model container [2023-04-03 07:19:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.04 07:19:39" (2/3) ... [2023-04-03 07:19:43,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3875e664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.04 07:19:43, skipping insertion in model container [2023-04-03 07:19:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.04 07:19:43" (3/3) ... [2023-04-03 07:19:43,114 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-binfmt_misc.cil.i [2023-04-03 07:19:43,127 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-03 07:19:43,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-04-03 07:19:43,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-03 07:19:43,180 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3250080b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-03 07:19:43,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-04-03 07:19:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 1304 states, 728 states have (on average 1.2554945054945055) internal successors, (914), 750 states have internal predecessors, (914), 375 states have call successors, (375), 173 states have call predecessors, (375), 171 states have return successors, (367), 359 states have call predecessors, (367), 367 states have call successors, (367) [2023-04-03 07:19:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2023-04-03 07:19:43,205 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:43,206 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:19:43,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:43,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:43,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2128835521, now seen corresponding path program 1 times [2023-04-03 07:19:43,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:43,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648132188] [2023-04-03 07:19:43,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:43,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:43,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2256 trivial. 0 not checked. [2023-04-03 07:19:43,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:43,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648132188] [2023-04-03 07:19:43,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648132188] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:43,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:43,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:43,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527544231] [2023-04-03 07:19:43,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:43,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:43,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:43,961 INFO L87 Difference]: Start difference. First operand has 1304 states, 728 states have (on average 1.2554945054945055) internal successors, (914), 750 states have internal predecessors, (914), 375 states have call successors, (375), 173 states have call predecessors, (375), 171 states have return successors, (367), 359 states have call predecessors, (367), 367 states have call successors, (367) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-03 07:19:44,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:44,810 INFO L93 Difference]: Finished difference Result 3285 states and 4359 transitions. [2023-04-03 07:19:44,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) Word has length 278 [2023-04-03 07:19:44,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:44,832 INFO L225 Difference]: With dead ends: 3285 [2023-04-03 07:19:44,832 INFO L226 Difference]: Without dead ends: 2142 [2023-04-03 07:19:44,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:44,843 INFO L413 NwaCegarLoop]: 1378 mSDtfsCounter, 1323 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:44,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1323 Valid, 2668 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 07:19:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2023-04-03 07:19:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2138. [2023-04-03 07:19:45,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1226 states have (on average 1.2740619902120718) internal successors, (1562), 1262 states have internal predecessors, (1562), 615 states have call successors, (615), 297 states have call predecessors, (615), 294 states have return successors, (610), 596 states have call predecessors, (610), 610 states have call successors, (610) [2023-04-03 07:19:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2787 transitions. [2023-04-03 07:19:45,018 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2787 transitions. Word has length 278 [2023-04-03 07:19:45,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:45,022 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 2787 transitions. [2023-04-03 07:19:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (31), 3 states have call predecessors, (31), 3 states have call successors, (31) [2023-04-03 07:19:45,022 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2787 transitions. [2023-04-03 07:19:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-04-03 07:19:45,029 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:45,030 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 5, 5, 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] [2023-04-03 07:19:45,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-03 07:19:45,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:45,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1433911085, now seen corresponding path program 1 times [2023-04-03 07:19:45,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:45,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392892617] [2023-04-03 07:19:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2023-04-03 07:19:45,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:45,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392892617] [2023-04-03 07:19:45,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392892617] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:45,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:45,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:45,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225371221] [2023-04-03 07:19:45,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:45,448 INFO L87 Difference]: Start difference. First operand 2138 states and 2787 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, (45), 3 states have call predecessors, (45), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-04-03 07:19:46,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:46,057 INFO L93 Difference]: Finished difference Result 5190 states and 6733 transitions. [2023-04-03 07:19:46,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:46,058 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, (45), 3 states have call predecessors, (45), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 341 [2023-04-03 07:19:46,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:46,076 INFO L225 Difference]: With dead ends: 5190 [2023-04-03 07:19:46,076 INFO L226 Difference]: Without dead ends: 3114 [2023-04-03 07:19:46,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:46,089 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 1310 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 2671 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:46,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1310 Valid, 2671 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 07:19:46,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2023-04-03 07:19:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 3080. [2023-04-03 07:19:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3080 states, 1778 states have (on average 1.2705286839145107) internal successors, (2259), 1835 states have internal predecessors, (2259), 858 states have call successors, (858), 444 states have call predecessors, (858), 441 states have return successors, (856), 827 states have call predecessors, (856), 853 states have call successors, (856) [2023-04-03 07:19:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3080 states to 3080 states and 3973 transitions. [2023-04-03 07:19:46,207 INFO L78 Accepts]: Start accepts. Automaton has 3080 states and 3973 transitions. Word has length 341 [2023-04-03 07:19:46,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:46,210 INFO L495 AbstractCegarLoop]: Abstraction has 3080 states and 3973 transitions. [2023-04-03 07:19:46,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2023-04-03 07:19:46,210 INFO L276 IsEmpty]: Start isEmpty. Operand 3080 states and 3973 transitions. [2023-04-03 07:19:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-04-03 07:19:46,217 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:46,217 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 4, 4, 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] [2023-04-03 07:19:46,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-03 07:19:46,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:46,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1817003191, now seen corresponding path program 1 times [2023-04-03 07:19:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:46,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569159479] [2023-04-03 07:19:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:46,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2283 trivial. 0 not checked. [2023-04-03 07:19:46,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:46,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569159479] [2023-04-03 07:19:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569159479] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:46,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:46,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:46,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595132320] [2023-04-03 07:19:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:46,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:46,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:46,601 INFO L87 Difference]: Start difference. First operand 3080 states and 3973 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-03 07:19:47,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:47,250 INFO L93 Difference]: Finished difference Result 7322 states and 9369 transitions. [2023-04-03 07:19:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:47,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 341 [2023-04-03 07:19:47,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:47,269 INFO L225 Difference]: With dead ends: 7322 [2023-04-03 07:19:47,269 INFO L226 Difference]: Without dead ends: 4304 [2023-04-03 07:19:47,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:47,279 INFO L413 NwaCegarLoop]: 1446 mSDtfsCounter, 1028 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:47,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 2759 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 07:19:47,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2023-04-03 07:19:47,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 4276. [2023-04-03 07:19:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 2461 states have (on average 1.255180820804551) internal successors, (3089), 2550 states have internal predecessors, (3089), 1162 states have call successors, (1162), 653 states have call predecessors, (1162), 650 states have return successors, (1167), 1107 states have call predecessors, (1167), 1157 states have call successors, (1167) [2023-04-03 07:19:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 5418 transitions. [2023-04-03 07:19:47,427 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 5418 transitions. Word has length 341 [2023-04-03 07:19:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:47,427 INFO L495 AbstractCegarLoop]: Abstraction has 4276 states and 5418 transitions. [2023-04-03 07:19:47,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2023-04-03 07:19:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 5418 transitions. [2023-04-03 07:19:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2023-04-03 07:19:47,432 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:47,432 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 5, 5, 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] [2023-04-03 07:19:47,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-03 07:19:47,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:47,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash -544557020, now seen corresponding path program 1 times [2023-04-03 07:19:47,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:47,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678984133] [2023-04-03 07:19:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2295 trivial. 0 not checked. [2023-04-03 07:19:47,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:47,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678984133] [2023-04-03 07:19:47,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678984133] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:47,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:47,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:47,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785069417] [2023-04-03 07:19:47,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:47,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:47,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:47,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:47,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:47,775 INFO L87 Difference]: Start difference. First operand 4276 states and 5418 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, (46), 3 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-04-03 07:19:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:48,526 INFO L93 Difference]: Finished difference Result 11341 states and 14378 transitions. [2023-04-03 07:19:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:48,526 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, (46), 3 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 343 [2023-04-03 07:19:48,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:48,557 INFO L225 Difference]: With dead ends: 11341 [2023-04-03 07:19:48,557 INFO L226 Difference]: Without dead ends: 7127 [2023-04-03 07:19:48,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:48,572 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 1306 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:48,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 2822 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 07:19:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7127 states. [2023-04-03 07:19:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7127 to 7105. [2023-04-03 07:19:48,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7105 states, 4121 states have (on average 1.2557631642805145) internal successors, (5175), 4276 states have internal predecessors, (5175), 1885 states have call successors, (1885), 1099 states have call predecessors, (1885), 1096 states have return successors, (1906), 1788 states have call predecessors, (1906), 1880 states have call successors, (1906) [2023-04-03 07:19:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7105 states to 7105 states and 8966 transitions. [2023-04-03 07:19:48,919 INFO L78 Accepts]: Start accepts. Automaton has 7105 states and 8966 transitions. Word has length 343 [2023-04-03 07:19:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:48,920 INFO L495 AbstractCegarLoop]: Abstraction has 7105 states and 8966 transitions. [2023-04-03 07:19:48,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2023-04-03 07:19:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7105 states and 8966 transitions. [2023-04-03 07:19:48,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2023-04-03 07:19:48,926 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:48,926 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 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] [2023-04-03 07:19:48,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-03 07:19:48,926 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:48,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash 284923099, now seen corresponding path program 1 times [2023-04-03 07:19:48,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:48,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677581207] [2023-04-03 07:19:48,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:48,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2443 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2434 trivial. 0 not checked. [2023-04-03 07:19:49,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677581207] [2023-04-03 07:19:49,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677581207] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:49,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:49,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:19:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733586572] [2023-04-03 07:19:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:49,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:19:49,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:19:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:19:49,490 INFO L87 Difference]: Start difference. First operand 7105 states and 8966 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, (48), 3 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-04-03 07:19:50,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:50,286 INFO L93 Difference]: Finished difference Result 7293 states and 9154 transitions. [2023-04-03 07:19:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:19:50,286 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, (48), 3 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 350 [2023-04-03 07:19:50,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:50,314 INFO L225 Difference]: With dead ends: 7293 [2023-04-03 07:19:50,314 INFO L226 Difference]: Without dead ends: 7291 [2023-04-03 07:19:50,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-03 07:19:50,318 INFO L413 NwaCegarLoop]: 1347 mSDtfsCounter, 1359 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 4205 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:50,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 4205 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 07:19:50,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2023-04-03 07:19:50,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 7291. [2023-04-03 07:19:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7291 states, 4219 states have (on average 1.2517184166864186) internal successors, (5281), 4378 states have internal predecessors, (5281), 1925 states have call successors, (1925), 1147 states have call predecessors, (1925), 1144 states have return successors, (1946), 1828 states have call predecessors, (1946), 1920 states have call successors, (1946) [2023-04-03 07:19:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7291 states to 7291 states and 9152 transitions. [2023-04-03 07:19:50,590 INFO L78 Accepts]: Start accepts. Automaton has 7291 states and 9152 transitions. Word has length 350 [2023-04-03 07:19:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:50,591 INFO L495 AbstractCegarLoop]: Abstraction has 7291 states and 9152 transitions. [2023-04-03 07:19:50,591 INFO L496 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, (48), 3 states have call predecessors, (48), 2 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2023-04-03 07:19:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 7291 states and 9152 transitions. [2023-04-03 07:19:50,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-04-03 07:19:50,595 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:50,595 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 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] [2023-04-03 07:19:50,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-03 07:19:50,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:50,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:50,596 INFO L85 PathProgramCache]: Analyzing trace with hash -105855494, now seen corresponding path program 1 times [2023-04-03 07:19:50,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:50,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966866021] [2023-04-03 07:19:50,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:50,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:51,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2445 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2434 trivial. 0 not checked. [2023-04-03 07:19:51,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:51,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966866021] [2023-04-03 07:19:51,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966866021] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:51,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:51,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:19:51,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620927518] [2023-04-03 07:19:51,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:19:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:51,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:19:51,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:19:51,100 INFO L87 Difference]: Start difference. First operand 7291 states and 9152 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, (49), 3 states have call predecessors, (49), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-03 07:19:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:51,920 INFO L93 Difference]: Finished difference Result 7297 states and 9157 transitions. [2023-04-03 07:19:51,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:19:51,921 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, (49), 3 states have call predecessors, (49), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 355 [2023-04-03 07:19:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:51,953 INFO L225 Difference]: With dead ends: 7297 [2023-04-03 07:19:51,953 INFO L226 Difference]: Without dead ends: 7293 [2023-04-03 07:19:51,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-03 07:19:51,958 INFO L413 NwaCegarLoop]: 1350 mSDtfsCounter, 1507 mSDsluCounter, 2691 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 4041 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:51,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 4041 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 07:19:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7293 states. [2023-04-03 07:19:52,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7293 to 7293. [2023-04-03 07:19:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7293 states, 4221 states have (on average 1.2513622364368633) internal successors, (5282), 4379 states have internal predecessors, (5282), 1925 states have call successors, (1925), 1148 states have call predecessors, (1925), 1144 states have return successors, (1946), 1828 states have call predecessors, (1946), 1920 states have call successors, (1946) [2023-04-03 07:19:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7293 states to 7293 states and 9153 transitions. [2023-04-03 07:19:52,221 INFO L78 Accepts]: Start accepts. Automaton has 7293 states and 9153 transitions. Word has length 355 [2023-04-03 07:19:52,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:52,221 INFO L495 AbstractCegarLoop]: Abstraction has 7293 states and 9153 transitions. [2023-04-03 07:19:52,222 INFO L496 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, (49), 3 states have call predecessors, (49), 2 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) [2023-04-03 07:19:52,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7293 states and 9153 transitions. [2023-04-03 07:19:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-04-03 07:19:52,226 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:52,226 INFO L195 NwaCegarLoop]: trace histogram [28, 24, 24, 24, 24, 24, 24, 4, 4, 3, 2, 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] [2023-04-03 07:19:52,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-03 07:19:52,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:52,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash 211126267, now seen corresponding path program 1 times [2023-04-03 07:19:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861741127] [2023-04-03 07:19:52,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:52,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2451 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2438 trivial. 0 not checked. [2023-04-03 07:19:52,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:52,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861741127] [2023-04-03 07:19:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861741127] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:52,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:19:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044575952] [2023-04-03 07:19:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:19:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:19:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:19:52,720 INFO L87 Difference]: Start difference. First operand 7293 states and 9153 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, (50), 3 states have call predecessors, (50), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-04-03 07:19:53,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:53,655 INFO L93 Difference]: Finished difference Result 7293 states and 9153 transitions. [2023-04-03 07:19:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:19:53,656 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, (50), 3 states have call predecessors, (50), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 360 [2023-04-03 07:19:53,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:53,682 INFO L225 Difference]: With dead ends: 7293 [2023-04-03 07:19:53,682 INFO L226 Difference]: Without dead ends: 7003 [2023-04-03 07:19:53,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-03 07:19:53,687 INFO L413 NwaCegarLoop]: 1348 mSDtfsCounter, 1503 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:53,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 4038 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 07:19:53,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2023-04-03 07:19:54,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 7003. [2023-04-03 07:19:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 4108 states have (on average 1.2524342745861734) internal successors, (5145), 4242 states have internal predecessors, (5145), 1815 states have call successors, (1815), 1080 states have call predecessors, (1815), 1078 states have return successors, (1840), 1743 states have call predecessors, (1840), 1814 states have call successors, (1840) [2023-04-03 07:19:54,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 8800 transitions. [2023-04-03 07:19:54,035 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 8800 transitions. Word has length 360 [2023-04-03 07:19:54,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:54,035 INFO L495 AbstractCegarLoop]: Abstraction has 7003 states and 8800 transitions. [2023-04-03 07:19:54,035 INFO L496 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, (50), 3 states have call predecessors, (50), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2023-04-03 07:19:54,036 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 8800 transitions. [2023-04-03 07:19:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-04-03 07:19:54,050 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:54,051 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:19:54,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-03 07:19:54,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:54,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1208668303, now seen corresponding path program 1 times [2023-04-03 07:19:54,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:54,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4386226] [2023-04-03 07:19:54,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:54,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2023-04-03 07:19:54,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4386226] [2023-04-03 07:19:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4386226] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:54,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:54,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:54,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734795810] [2023-04-03 07:19:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:54,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:54,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:54,321 INFO L87 Difference]: Start difference. First operand 7003 states and 8800 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-04-03 07:19:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:55,190 INFO L93 Difference]: Finished difference Result 16687 states and 20995 transitions. [2023-04-03 07:19:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:55,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 445 [2023-04-03 07:19:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:55,233 INFO L225 Difference]: With dead ends: 16687 [2023-04-03 07:19:55,233 INFO L226 Difference]: Without dead ends: 10072 [2023-04-03 07:19:55,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:55,252 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 1254 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 3002 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:55,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 3002 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-03 07:19:55,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10072 states. [2023-04-03 07:19:55,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10072 to 10050. [2023-04-03 07:19:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10050 states, 5907 states have (on average 1.2525816827492806) internal successors, (7399), 6098 states have internal predecessors, (7399), 2586 states have call successors, (2586), 1561 states have call predecessors, (2586), 1555 states have return successors, (2623), 2480 states have call predecessors, (2623), 2585 states have call successors, (2623) [2023-04-03 07:19:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10050 states to 10050 states and 12608 transitions. [2023-04-03 07:19:55,630 INFO L78 Accepts]: Start accepts. Automaton has 10050 states and 12608 transitions. Word has length 445 [2023-04-03 07:19:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:55,631 INFO L495 AbstractCegarLoop]: Abstraction has 10050 states and 12608 transitions. [2023-04-03 07:19:55,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2023-04-03 07:19:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 10050 states and 12608 transitions. [2023-04-03 07:19:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2023-04-03 07:19:55,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:55,641 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:19:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-03 07:19:55,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:55,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:55,641 INFO L85 PathProgramCache]: Analyzing trace with hash -164615283, now seen corresponding path program 1 times [2023-04-03 07:19:55,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:55,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946526520] [2023-04-03 07:19:55,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:55,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:55,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2580 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2572 trivial. 0 not checked. [2023-04-03 07:19:55,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946526520] [2023-04-03 07:19:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946526520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387589786] [2023-04-03 07:19:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:55,950 INFO L87 Difference]: Start difference. First operand 10050 states and 12608 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-04-03 07:19:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:56,916 INFO L93 Difference]: Finished difference Result 23290 states and 29215 transitions. [2023-04-03 07:19:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 445 [2023-04-03 07:19:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:56,971 INFO L225 Difference]: With dead ends: 23290 [2023-04-03 07:19:56,972 INFO L226 Difference]: Without dead ends: 13628 [2023-04-03 07:19:57,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:57,002 INFO L413 NwaCegarLoop]: 1774 mSDtfsCounter, 971 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 3031 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:57,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 3031 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-03 07:19:57,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13628 states. [2023-04-03 07:19:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13628 to 13612. [2023-04-03 07:19:57,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13612 states, 8012 states have (on average 1.2493759360958563) internal successors, (10010), 8271 states have internal predecessors, (10010), 3470 states have call successors, (3470), 2142 states have call predecessors, (3470), 2128 states have return successors, (3524), 3316 states have call predecessors, (3524), 3469 states have call successors, (3524) [2023-04-03 07:19:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13612 states to 13612 states and 17004 transitions. [2023-04-03 07:19:57,565 INFO L78 Accepts]: Start accepts. Automaton has 13612 states and 17004 transitions. Word has length 445 [2023-04-03 07:19:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:19:57,566 INFO L495 AbstractCegarLoop]: Abstraction has 13612 states and 17004 transitions. [2023-04-03 07:19:57,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 3 states have call successors, (64), 3 states have call predecessors, (64), 2 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2023-04-03 07:19:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 13612 states and 17004 transitions. [2023-04-03 07:19:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2023-04-03 07:19:57,573 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:19:57,574 INFO L195 NwaCegarLoop]: trace histogram [29, 24, 24, 24, 24, 24, 24, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:19:57,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-03 07:19:57,574 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:19:57,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:19:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1737676952, now seen corresponding path program 1 times [2023-04-03 07:19:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:19:57,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297593507] [2023-04-03 07:19:57,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:19:57,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:19:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:19:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2604 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2596 trivial. 0 not checked. [2023-04-03 07:19:57,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:19:57,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297593507] [2023-04-03 07:19:57,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297593507] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:19:57,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:19:57,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-03 07:19:57,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386747134] [2023-04-03 07:19:57,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:19:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-03 07:19:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:19:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-03 07:19:57,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:57,841 INFO L87 Difference]: Start difference. First operand 13612 states and 17004 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2023-04-03 07:19:59,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:19:59,136 INFO L93 Difference]: Finished difference Result 32671 states and 40870 transitions. [2023-04-03 07:19:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-03 07:19:59,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) Word has length 447 [2023-04-03 07:19:59,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:19:59,208 INFO L225 Difference]: With dead ends: 32671 [2023-04-03 07:19:59,208 INFO L226 Difference]: Without dead ends: 19447 [2023-04-03 07:19:59,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-03 07:19:59,251 INFO L413 NwaCegarLoop]: 1786 mSDtfsCounter, 1248 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-03 07:19:59,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 3041 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-03 07:19:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19447 states. [2023-04-03 07:19:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19447 to 19437. [2023-04-03 07:19:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19437 states, 11476 states have (on average 1.2493900313698152) internal successors, (14338), 11841 states have internal predecessors, (14338), 4910 states have call successors, (4910), 3078 states have call predecessors, (4910), 3049 states have return successors, (4988), 4687 states have call predecessors, (4988), 4909 states have call successors, (4988) [2023-04-03 07:20:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19437 states to 19437 states and 24236 transitions. [2023-04-03 07:20:00,031 INFO L78 Accepts]: Start accepts. Automaton has 19437 states and 24236 transitions. Word has length 447 [2023-04-03 07:20:00,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:00,031 INFO L495 AbstractCegarLoop]: Abstraction has 19437 states and 24236 transitions. [2023-04-03 07:20:00,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (65), 3 states have call predecessors, (65), 2 states have return successors, (59), 3 states have call predecessors, (59), 3 states have call successors, (59) [2023-04-03 07:20:00,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19437 states and 24236 transitions. [2023-04-03 07:20:00,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2023-04-03 07:20:00,045 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:00,046 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:00,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-03 07:20:00,046 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:00,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1906782427, now seen corresponding path program 1 times [2023-04-03 07:20:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:00,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456883190] [2023-04-03 07:20:00,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:00,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:00,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2931 trivial. 0 not checked. [2023-04-03 07:20:00,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:00,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456883190] [2023-04-03 07:20:00,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456883190] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-03 07:20:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966462447] [2023-04-03 07:20:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:00,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-03 07:20:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-03 07:20:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-03 07:20:00,841 INFO L87 Difference]: Start difference. First operand 19437 states and 24236 transitions. Second operand has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 4 states have call successors, (68), 5 states have call predecessors, (68), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-04-03 07:20:02,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:02,393 INFO L93 Difference]: Finished difference Result 37852 states and 47216 transitions. [2023-04-03 07:20:02,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:20:02,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 4 states have call successors, (68), 5 states have call predecessors, (68), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 507 [2023-04-03 07:20:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:02,454 INFO L225 Difference]: With dead ends: 37852 [2023-04-03 07:20:02,454 INFO L226 Difference]: Without dead ends: 18803 [2023-04-03 07:20:02,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-04-03 07:20:02,498 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1390 mSDsluCounter, 3820 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 5095 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:02,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 5095 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 07:20:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18803 states. [2023-04-03 07:20:03,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18803 to 18803. [2023-04-03 07:20:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18803 states, 11136 states have (on average 1.2485632183908046) internal successors, (13904), 11473 states have internal predecessors, (13904), 4708 states have call successors, (4708), 2986 states have call predecessors, (4708), 2957 states have return successors, (4786), 4497 states have call predecessors, (4786), 4707 states have call successors, (4786) [2023-04-03 07:20:03,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18803 states to 18803 states and 23398 transitions. [2023-04-03 07:20:03,463 INFO L78 Accepts]: Start accepts. Automaton has 18803 states and 23398 transitions. Word has length 507 [2023-04-03 07:20:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:03,464 INFO L495 AbstractCegarLoop]: Abstraction has 18803 states and 23398 transitions. [2023-04-03 07:20:03,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 4 states have call successors, (68), 5 states have call predecessors, (68), 2 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2023-04-03 07:20:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18803 states and 23398 transitions. [2023-04-03 07:20:03,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-04-03 07:20:03,478 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:03,479 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:03,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-03 07:20:03,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:03,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:03,479 INFO L85 PathProgramCache]: Analyzing trace with hash 306269949, now seen corresponding path program 1 times [2023-04-03 07:20:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:03,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146583211] [2023-04-03 07:20:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:03,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2975 trivial. 0 not checked. [2023-04-03 07:20:03,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146583211] [2023-04-03 07:20:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146583211] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-03 07:20:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381194681] [2023-04-03 07:20:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:03,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-03 07:20:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-03 07:20:03,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-03 07:20:03,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-03 07:20:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:04,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 4483 conjuncts, 5 conjunts are in the unsatisfiable core [2023-04-03 07:20:04,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-03 07:20:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2978 trivial. 0 not checked. [2023-04-03 07:20:04,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-03 07:20:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381194681] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-03 07:20:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-04-03 07:20:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583526917] [2023-04-03 07:20:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:04,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:20:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:04,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:20:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-03 07:20:04,967 INFO L87 Difference]: Start difference. First operand 18803 states and 23398 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2023-04-03 07:20:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:06,454 INFO L93 Difference]: Finished difference Result 37311 states and 46465 transitions. [2023-04-03 07:20:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 07:20:06,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) Word has length 508 [2023-04-03 07:20:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:06,521 INFO L225 Difference]: With dead ends: 37311 [2023-04-03 07:20:06,521 INFO L226 Difference]: Without dead ends: 18896 [2023-04-03 07:20:06,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-04-03 07:20:06,573 INFO L413 NwaCegarLoop]: 1280 mSDtfsCounter, 3 mSDsluCounter, 3835 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5115 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:06,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5115 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-03 07:20:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18896 states. [2023-04-03 07:20:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18896 to 18857. [2023-04-03 07:20:07,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18857 states, 11181 states have (on average 1.2475628298005546) internal successors, (13949), 11518 states have internal predecessors, (13949), 4708 states have call successors, (4708), 2986 states have call predecessors, (4708), 2966 states have return successors, (4798), 4506 states have call predecessors, (4798), 4707 states have call successors, (4798) [2023-04-03 07:20:07,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18857 states to 18857 states and 23455 transitions. [2023-04-03 07:20:07,425 INFO L78 Accepts]: Start accepts. Automaton has 18857 states and 23455 transitions. Word has length 508 [2023-04-03 07:20:07,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:07,426 INFO L495 AbstractCegarLoop]: Abstraction has 18857 states and 23455 transitions. [2023-04-03 07:20:07,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (67), 2 states have call predecessors, (67), 3 states have return successors, (61), 3 states have call predecessors, (61), 2 states have call successors, (61) [2023-04-03 07:20:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 18857 states and 23455 transitions. [2023-04-03 07:20:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 509 [2023-04-03 07:20:07,443 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:07,443 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:07,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-03 07:20:07,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-03 07:20:07,658 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:07,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:07,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1303132107, now seen corresponding path program 1 times [2023-04-03 07:20:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487386439] [2023-04-03 07:20:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2976 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2976 trivial. 0 not checked. [2023-04-03 07:20:08,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487386439] [2023-04-03 07:20:08,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487386439] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:08,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:08,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:20:08,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563767262] [2023-04-03 07:20:08,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:08,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:20:08,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:08,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:20:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:20:08,144 INFO L87 Difference]: Start difference. First operand 18857 states and 23455 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2023-04-03 07:20:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:09,818 INFO L93 Difference]: Finished difference Result 37410 states and 46570 transitions. [2023-04-03 07:20:09,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 07:20:09,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) Word has length 508 [2023-04-03 07:20:09,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:09,893 INFO L225 Difference]: With dead ends: 37410 [2023-04-03 07:20:09,893 INFO L226 Difference]: Without dead ends: 18941 [2023-04-03 07:20:09,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:20:09,939 INFO L413 NwaCegarLoop]: 1282 mSDtfsCounter, 2 mSDsluCounter, 3839 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5121 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-03 07:20:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18941 states. [2023-04-03 07:20:10,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18941 to 18911. [2023-04-03 07:20:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18911 states, 11226 states have (on average 1.246570461428826) internal successors, (13994), 11563 states have internal predecessors, (13994), 4708 states have call successors, (4708), 2986 states have call predecessors, (4708), 2975 states have return successors, (4810), 4515 states have call predecessors, (4810), 4707 states have call successors, (4810) [2023-04-03 07:20:10,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18911 states to 18911 states and 23512 transitions. [2023-04-03 07:20:10,822 INFO L78 Accepts]: Start accepts. Automaton has 18911 states and 23512 transitions. Word has length 508 [2023-04-03 07:20:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:10,823 INFO L495 AbstractCegarLoop]: Abstraction has 18911 states and 23512 transitions. [2023-04-03 07:20:10,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2023-04-03 07:20:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18911 states and 23512 transitions. [2023-04-03 07:20:10,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2023-04-03 07:20:10,840 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:10,840 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:10,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-03 07:20:10,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:10,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash -2002679794, now seen corresponding path program 1 times [2023-04-03 07:20:10,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:10,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220263543] [2023-04-03 07:20:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:10,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2976 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 2955 trivial. 0 not checked. [2023-04-03 07:20:11,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:11,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220263543] [2023-04-03 07:20:11,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220263543] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:11,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:11,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:11,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835316760] [2023-04-03 07:20:11,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:11,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:11,338 INFO L87 Difference]: Start difference. First operand 18911 states and 23512 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2023-04-03 07:20:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:13,612 INFO L93 Difference]: Finished difference Result 43155 states and 53664 transitions. [2023-04-03 07:20:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:13,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) Word has length 509 [2023-04-03 07:20:13,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:13,687 INFO L225 Difference]: With dead ends: 43155 [2023-04-03 07:20:13,687 INFO L226 Difference]: Without dead ends: 24632 [2023-04-03 07:20:13,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:13,723 INFO L413 NwaCegarLoop]: 2320 mSDtfsCounter, 1224 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:13,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 4103 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 07:20:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24632 states. [2023-04-03 07:20:14,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24632 to 24616. [2023-04-03 07:20:14,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24616 states, 14627 states have (on average 1.2463936555684694) internal successors, (18231), 15067 states have internal predecessors, (18231), 6078 states have call successors, (6078), 3923 states have call predecessors, (6078), 3909 states have return successors, (6225), 5825 states have call predecessors, (6225), 6077 states have call successors, (6225) [2023-04-03 07:20:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24616 states to 24616 states and 30534 transitions. [2023-04-03 07:20:14,634 INFO L78 Accepts]: Start accepts. Automaton has 24616 states and 30534 transitions. Word has length 509 [2023-04-03 07:20:14,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:14,635 INFO L495 AbstractCegarLoop]: Abstraction has 24616 states and 30534 transitions. [2023-04-03 07:20:14,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 3 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (63), 3 states have call predecessors, (63), 3 states have call successors, (63) [2023-04-03 07:20:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 24616 states and 30534 transitions. [2023-04-03 07:20:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-04-03 07:20:14,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:14,650 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:14,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-03 07:20:14,650 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:14,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:14,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1386093192, now seen corresponding path program 1 times [2023-04-03 07:20:14,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:14,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389696420] [2023-04-03 07:20:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:14,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:15,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2985 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 2963 trivial. 0 not checked. [2023-04-03 07:20:15,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:15,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389696420] [2023-04-03 07:20:15,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389696420] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:15,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:15,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:15,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760128623] [2023-04-03 07:20:15,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:15,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:15,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:15,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:15,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:15,254 INFO L87 Difference]: Start difference. First operand 24616 states and 30534 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-04-03 07:20:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:17,604 INFO L93 Difference]: Finished difference Result 55550 states and 68874 transitions. [2023-04-03 07:20:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:17,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 520 [2023-04-03 07:20:17,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:17,694 INFO L225 Difference]: With dead ends: 55550 [2023-04-03 07:20:17,695 INFO L226 Difference]: Without dead ends: 31322 [2023-04-03 07:20:17,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:17,737 INFO L413 NwaCegarLoop]: 2133 mSDtfsCounter, 995 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:17,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 5039 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 07:20:17,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31322 states. [2023-04-03 07:20:19,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31322 to 31306. [2023-04-03 07:20:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31306 states, 18605 states have (on average 1.2441816715936576) internal successors, (23148), 19178 states have internal predecessors, (23148), 7665 states have call successors, (7665), 5048 states have call predecessors, (7665), 5034 states have return successors, (7882), 7329 states have call predecessors, (7882), 7664 states have call successors, (7882) [2023-04-03 07:20:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31306 states to 31306 states and 38695 transitions. [2023-04-03 07:20:19,125 INFO L78 Accepts]: Start accepts. Automaton has 31306 states and 38695 transitions. Word has length 520 [2023-04-03 07:20:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:19,126 INFO L495 AbstractCegarLoop]: Abstraction has 31306 states and 38695 transitions. [2023-04-03 07:20:19,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-04-03 07:20:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 31306 states and 38695 transitions. [2023-04-03 07:20:19,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2023-04-03 07:20:19,141 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:19,142 INFO L195 NwaCegarLoop]: trace histogram [32, 24, 24, 24, 24, 24, 24, 13, 13, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-03 07:20:19,142 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:19,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:19,142 INFO L85 PathProgramCache]: Analyzing trace with hash -586799987, now seen corresponding path program 1 times [2023-04-03 07:20:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867691084] [2023-04-03 07:20:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2978 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2955 trivial. 0 not checked. [2023-04-03 07:20:19,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867691084] [2023-04-03 07:20:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867691084] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719058001] [2023-04-03 07:20:19,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:19,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:19,596 INFO L87 Difference]: Start difference. First operand 31306 states and 38695 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-04-03 07:20:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:22,570 INFO L93 Difference]: Finished difference Result 71642 states and 88601 transitions. [2023-04-03 07:20:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:22,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 526 [2023-04-03 07:20:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:22,703 INFO L225 Difference]: With dead ends: 71642 [2023-04-03 07:20:22,704 INFO L226 Difference]: Without dead ends: 40724 [2023-04-03 07:20:22,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:22,776 INFO L413 NwaCegarLoop]: 2335 mSDtfsCounter, 1220 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 5359 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:22,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 5359 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-03 07:20:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40724 states. [2023-04-03 07:20:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40724 to 40694. [2023-04-03 07:20:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40694 states, 24227 states have (on average 1.2444792999545962) internal successors, (30150), 24974 states have internal predecessors, (30150), 9876 states have call successors, (9876), 6607 states have call predecessors, (9876), 6589 states have return successors, (10185), 9424 states have call predecessors, (10185), 9875 states have call successors, (10185) [2023-04-03 07:20:24,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40694 states to 40694 states and 50211 transitions. [2023-04-03 07:20:24,780 INFO L78 Accepts]: Start accepts. Automaton has 40694 states and 50211 transitions. Word has length 526 [2023-04-03 07:20:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:24,781 INFO L495 AbstractCegarLoop]: Abstraction has 40694 states and 50211 transitions. [2023-04-03 07:20:24,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2023-04-03 07:20:24,781 INFO L276 IsEmpty]: Start isEmpty. Operand 40694 states and 50211 transitions. [2023-04-03 07:20:24,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2023-04-03 07:20:24,803 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:24,803 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:24,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-03 07:20:24,803 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:24,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 411228372, now seen corresponding path program 1 times [2023-04-03 07:20:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476570596] [2023-04-03 07:20:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3185 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 3148 trivial. 0 not checked. [2023-04-03 07:20:25,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476570596] [2023-04-03 07:20:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476570596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:25,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:25,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107554454] [2023-04-03 07:20:25,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:25,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:25,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:25,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:25,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:25,221 INFO L87 Difference]: Start difference. First operand 40694 states and 50211 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2023-04-03 07:20:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:28,396 INFO L93 Difference]: Finished difference Result 90394 states and 111633 transitions. [2023-04-03 07:20:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:28,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) Word has length 545 [2023-04-03 07:20:28,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:28,566 INFO L225 Difference]: With dead ends: 90394 [2023-04-03 07:20:28,567 INFO L226 Difference]: Without dead ends: 50088 [2023-04-03 07:20:28,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:28,658 INFO L413 NwaCegarLoop]: 2320 mSDtfsCounter, 1207 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:28,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 4112 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 07:20:28,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50088 states. [2023-04-03 07:20:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50088 to 50070. [2023-04-03 07:20:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50070 states, 29858 states have (on average 1.2452943934623886) internal successors, (37182), 30779 states have internal predecessors, (37182), 12078 states have call successors, (12078), 8154 states have call predecessors, (12078), 8132 states have return successors, (12479), 11518 states have call predecessors, (12479), 12077 states have call successors, (12479) [2023-04-03 07:20:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50070 states to 50070 states and 61739 transitions. [2023-04-03 07:20:30,948 INFO L78 Accepts]: Start accepts. Automaton has 50070 states and 61739 transitions. Word has length 545 [2023-04-03 07:20:30,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:30,957 INFO L495 AbstractCegarLoop]: Abstraction has 50070 states and 61739 transitions. [2023-04-03 07:20:30,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (73), 3 states have call predecessors, (73), 2 states have return successors, (67), 3 states have call predecessors, (67), 3 states have call successors, (67) [2023-04-03 07:20:30,957 INFO L276 IsEmpty]: Start isEmpty. Operand 50070 states and 61739 transitions. [2023-04-03 07:20:30,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2023-04-03 07:20:30,981 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:30,982 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:30,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-03 07:20:30,982 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:30,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1647938827, now seen corresponding path program 1 times [2023-04-03 07:20:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876624947] [2023-04-03 07:20:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3196 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 3157 trivial. 0 not checked. [2023-04-03 07:20:31,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:31,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876624947] [2023-04-03 07:20:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876624947] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:31,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:31,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901346990] [2023-04-03 07:20:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:31,374 INFO L87 Difference]: Start difference. First operand 50070 states and 61739 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:35,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:35,054 INFO L93 Difference]: Finished difference Result 110441 states and 136231 transitions. [2023-04-03 07:20:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:35,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 557 [2023-04-03 07:20:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:35,273 INFO L225 Difference]: With dead ends: 110441 [2023-04-03 07:20:35,273 INFO L226 Difference]: Without dead ends: 60759 [2023-04-03 07:20:35,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:35,527 INFO L413 NwaCegarLoop]: 2132 mSDtfsCounter, 991 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:35,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 3805 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-03 07:20:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60759 states. [2023-04-03 07:20:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60759 to 60743. [2023-04-03 07:20:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60743 states, 36259 states have (on average 1.2446564990760915) internal successors, (45130), 37393 states have internal predecessors, (45130), 14559 states have call successors, (14559), 9945 states have call predecessors, (14559), 9923 states have return successors, (15086), 13860 states have call predecessors, (15086), 14558 states have call successors, (15086) [2023-04-03 07:20:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60743 states to 60743 states and 74775 transitions. [2023-04-03 07:20:38,408 INFO L78 Accepts]: Start accepts. Automaton has 60743 states and 74775 transitions. Word has length 557 [2023-04-03 07:20:38,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:38,409 INFO L495 AbstractCegarLoop]: Abstraction has 60743 states and 74775 transitions. [2023-04-03 07:20:38,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:38,410 INFO L276 IsEmpty]: Start isEmpty. Operand 60743 states and 74775 transitions. [2023-04-03 07:20:38,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 565 [2023-04-03 07:20:38,443 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:38,443 INFO L195 NwaCegarLoop]: trace histogram [34, 24, 24, 24, 24, 24, 24, 14, 14, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:38,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-03 07:20:38,443 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:38,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1723469089, now seen corresponding path program 1 times [2023-04-03 07:20:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:38,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950498523] [2023-04-03 07:20:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:38,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3191 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 3150 trivial. 0 not checked. [2023-04-03 07:20:38,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:38,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950498523] [2023-04-03 07:20:38,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950498523] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:38,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:38,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-03 07:20:38,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489124354] [2023-04-03 07:20:38,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:38,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-03 07:20:38,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-03 07:20:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:38,984 INFO L87 Difference]: Start difference. First operand 60743 states and 74775 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:43,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:43,627 INFO L93 Difference]: Finished difference Result 135229 states and 166629 transitions. [2023-04-03 07:20:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-03 07:20:43,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) Word has length 564 [2023-04-03 07:20:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:43,873 INFO L225 Difference]: With dead ends: 135229 [2023-04-03 07:20:43,873 INFO L226 Difference]: Without dead ends: 74874 [2023-04-03 07:20:43,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-03 07:20:43,990 INFO L413 NwaCegarLoop]: 2334 mSDtfsCounter, 1207 mSDsluCounter, 3042 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 5376 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:43,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 5376 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 07:20:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74874 states. [2023-04-03 07:20:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74874 to 74842. [2023-04-03 07:20:47,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74842 states, 44756 states have (on average 1.2454196085441058) internal successors, (55740), 46153 states have internal predecessors, (55740), 17827 states have call successors, (17827), 12284 states have call predecessors, (17827), 12257 states have return successors, (18509), 16948 states have call predecessors, (18509), 17826 states have call successors, (18509) [2023-04-03 07:20:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74842 states to 74842 states and 92076 transitions. [2023-04-03 07:20:47,601 INFO L78 Accepts]: Start accepts. Automaton has 74842 states and 92076 transitions. Word has length 564 [2023-04-03 07:20:47,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:47,602 INFO L495 AbstractCegarLoop]: Abstraction has 74842 states and 92076 transitions. [2023-04-03 07:20:47,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 3 states have call successors, (76), 3 states have call predecessors, (76), 2 states have return successors, (70), 3 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:47,602 INFO L276 IsEmpty]: Start isEmpty. Operand 74842 states and 92076 transitions. [2023-04-03 07:20:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-04-03 07:20:47,777 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:47,777 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-03 07:20:47,777 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:47,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:47,779 INFO L85 PathProgramCache]: Analyzing trace with hash 646731784, now seen corresponding path program 1 times [2023-04-03 07:20:47,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:47,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269952088] [2023-04-03 07:20:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:47,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:47,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-04-03 07:20:48,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:48,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269952088] [2023-04-03 07:20:48,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269952088] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:48,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:48,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:20:48,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879396598] [2023-04-03 07:20:48,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:48,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:20:48,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:48,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:20:48,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:20:48,195 INFO L87 Difference]: Start difference. First operand 74842 states and 92076 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (76), 3 states have call predecessors, (76), 3 states have return successors, (70), 4 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:20:53,054 INFO L93 Difference]: Finished difference Result 163177 states and 200864 transitions. [2023-04-03 07:20:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:20:53,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (76), 3 states have call predecessors, (76), 3 states have return successors, (70), 4 states have call predecessors, (70), 3 states have call successors, (70) Word has length 576 [2023-04-03 07:20:53,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:20:53,490 INFO L225 Difference]: With dead ends: 163177 [2023-04-03 07:20:53,490 INFO L226 Difference]: Without dead ends: 88723 [2023-04-03 07:20:53,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-03 07:20:53,632 INFO L413 NwaCegarLoop]: 2325 mSDtfsCounter, 1176 mSDsluCounter, 5900 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 8225 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-04-03 07:20:53,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 8225 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-04-03 07:20:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88723 states. [2023-04-03 07:20:57,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88723 to 88443. [2023-04-03 07:20:57,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88443 states, 52879 states have (on average 1.2459766637039278) internal successors, (65886), 54539 states have internal predecessors, (65886), 21037 states have call successors, (21037), 14532 states have call predecessors, (21037), 14525 states have return successors, (21899), 20013 states have call predecessors, (21899), 21036 states have call successors, (21899) [2023-04-03 07:20:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88443 states to 88443 states and 108822 transitions. [2023-04-03 07:20:57,861 INFO L78 Accepts]: Start accepts. Automaton has 88443 states and 108822 transitions. Word has length 576 [2023-04-03 07:20:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:20:57,862 INFO L495 AbstractCegarLoop]: Abstraction has 88443 states and 108822 transitions. [2023-04-03 07:20:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (76), 3 states have call predecessors, (76), 3 states have return successors, (70), 4 states have call predecessors, (70), 3 states have call successors, (70) [2023-04-03 07:20:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 88443 states and 108822 transitions. [2023-04-03 07:20:57,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2023-04-03 07:20:57,903 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:20:57,904 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:20:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-03 07:20:57,904 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:20:57,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:20:57,904 INFO L85 PathProgramCache]: Analyzing trace with hash -374860410, now seen corresponding path program 1 times [2023-04-03 07:20:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:20:57,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141610695] [2023-04-03 07:20:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:20:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:20:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:20:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3414 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3414 trivial. 0 not checked. [2023-04-03 07:20:58,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:20:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141610695] [2023-04-03 07:20:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141610695] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:20:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:20:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:20:58,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050336758] [2023-04-03 07:20:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:20:58,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:20:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:20:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:20:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:20:58,447 INFO L87 Difference]: Start difference. First operand 88443 states and 108822 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 3 states have call predecessors, (68), 2 states have call successors, (68) [2023-04-03 07:21:03,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:21:03,000 INFO L93 Difference]: Finished difference Result 176738 states and 217553 transitions. [2023-04-03 07:21:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-03 07:21:03,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 3 states have call predecessors, (68), 2 states have call successors, (68) Word has length 577 [2023-04-03 07:21:03,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:21:03,518 INFO L225 Difference]: With dead ends: 176738 [2023-04-03 07:21:03,518 INFO L226 Difference]: Without dead ends: 88683 [2023-04-03 07:21:03,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:21:03,697 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 2 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-03 07:21:03,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5146 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-03 07:21:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88683 states. [2023-04-03 07:21:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88683 to 88433. [2023-04-03 07:21:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88433 states, 52874 states have (on average 1.245999924348451) internal successors, (65881), 54529 states have internal predecessors, (65881), 21037 states have call successors, (21037), 14532 states have call predecessors, (21037), 14520 states have return successors, (21889), 20013 states have call predecessors, (21889), 21036 states have call successors, (21889) [2023-04-03 07:21:08,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88433 states to 88433 states and 108807 transitions. [2023-04-03 07:21:08,032 INFO L78 Accepts]: Start accepts. Automaton has 88433 states and 108807 transitions. Word has length 577 [2023-04-03 07:21:08,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-03 07:21:08,033 INFO L495 AbstractCegarLoop]: Abstraction has 88433 states and 108807 transitions. [2023-04-03 07:21:08,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (74), 2 states have call predecessors, (74), 2 states have return successors, (68), 3 states have call predecessors, (68), 2 states have call successors, (68) [2023-04-03 07:21:08,033 INFO L276 IsEmpty]: Start isEmpty. Operand 88433 states and 108807 transitions. [2023-04-03 07:21:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2023-04-03 07:21:08,078 INFO L187 NwaCegarLoop]: Found error trace [2023-04-03 07:21:08,079 INFO L195 NwaCegarLoop]: trace histogram [36, 24, 24, 24, 24, 24, 24, 15, 15, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-03 07:21:08,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-03 07:21:08,079 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-03 07:21:08,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-03 07:21:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 335701506, now seen corresponding path program 1 times [2023-04-03 07:21:08,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-03 07:21:08,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464816893] [2023-04-03 07:21:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-03 07:21:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-03 07:21:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-03 07:21:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3428 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 3373 trivial. 0 not checked. [2023-04-03 07:21:08,645 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-03 07:21:08,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464816893] [2023-04-03 07:21:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464816893] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-03 07:21:08,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-03 07:21:08,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-03 07:21:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434816372] [2023-04-03 07:21:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-03 07:21:08,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-03 07:21:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-03 07:21:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-03 07:21:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-03 07:21:08,647 INFO L87 Difference]: Start difference. First operand 88433 states and 108807 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (79), 3 states have call predecessors, (79), 3 states have return successors, (73), 4 states have call predecessors, (73), 3 states have call successors, (73) [2023-04-03 07:21:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-03 07:21:14,049 INFO L93 Difference]: Finished difference Result 191759 states and 235999 transitions. [2023-04-03 07:21:14,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-03 07:21:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (79), 3 states have call predecessors, (79), 3 states have return successors, (73), 4 states have call predecessors, (73), 3 states have call successors, (73) Word has length 589 [2023-04-03 07:21:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-03 07:21:14,665 INFO L225 Difference]: With dead ends: 191759 [2023-04-03 07:21:14,666 INFO L226 Difference]: Without dead ends: 103714 [2023-04-03 07:21:14,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-03 07:21:14,851 INFO L413 NwaCegarLoop]: 2132 mSDtfsCounter, 960 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 7646 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-04-03 07:21:14,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 7646 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-04-03 07:21:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103714 states.