./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:33:15,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:33:15,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:33:15,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:33:15,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:33:15,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:33:15,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:33:15,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:33:15,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:33:15,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:33:15,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:33:15,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:33:15,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:33:15,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:33:15,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:33:15,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:33:15,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:33:15,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:33:15,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:33:15,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:33:15,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:33:15,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:33:15,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:33:15,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:33:15,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:33:15,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:33:15,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:33:15,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:33:15,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:33:15,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:33:15,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:33:15,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:33:15,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:33:15,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:33:15,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:33:15,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:33:15,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:33:15,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:33:15,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:33:15,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:33:15,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:33:15,446 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:33:15,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:33:15,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:33:15,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:33:15,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:33:15,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:33:15,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:33:15,474 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:33:15,475 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:33:15,475 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:33:15,475 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:33:15,475 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:33:15,476 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:33:15,476 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:33:15,476 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:33:15,476 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:33:15,477 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:33:15,477 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:33:15,477 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:33:15,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:33:15,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:33:15,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:33:15,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:33:15,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:33:15,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:33:15,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:33:15,480 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:33:15,480 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:33:15,480 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:33:15,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:33:15,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:15,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:33:15,481 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:33:15,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:33:15,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:33:15,482 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:33:15,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:33:15,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:33:15,483 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:33:15,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e4387c36ff25592bf6c6537ff8412eacb18bdab6752c222fa8ef2a1ca9dbb8 [2022-11-19 06:33:15,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:33:15,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:33:15,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:33:15,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:33:15,830 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:33:15,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-19 06:33:15,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/data/243487e5a/190a27c574a24fe0857e50573860412a/FLAG873cae5b8 [2022-11-19 06:33:17,002 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:33:17,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-19 06:33:17,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/data/243487e5a/190a27c574a24fe0857e50573860412a/FLAG873cae5b8 [2022-11-19 06:33:17,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/data/243487e5a/190a27c574a24fe0857e50573860412a [2022-11-19 06:33:17,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:33:17,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:33:17,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:17,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:33:17,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:33:17,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:17" (1/1) ... [2022-11-19 06:33:17,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c11cda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:17, skipping insertion in model container [2022-11-19 06:33:17,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:33:17" (1/1) ... [2022-11-19 06:33:17,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:33:17,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:33:20,304 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2022-11-19 06:33:20,310 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2022-11-19 06:33:20,311 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2022-11-19 06:33:20,312 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2022-11-19 06:33:20,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:20,403 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:33:20,860 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284136,284149] [2022-11-19 06:33:20,861 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284302,284315] [2022-11-19 06:33:20,861 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284466,284479] [2022-11-19 06:33:20,862 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i[284631,284644] [2022-11-19 06:33:20,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:33:21,013 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:33:21,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21 WrapperNode [2022-11-19 06:33:21,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:33:21,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:21,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:33:21,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:33:21,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,285 INFO L138 Inliner]: procedures = 343, calls = 2850, calls flagged for inlining = 190, calls inlined = 160, statements flattened = 4888 [2022-11-19 06:33:21,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:33:21,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:33:21,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:33:21,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:33:21,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,665 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:33:21,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:33:21,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:33:21,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:33:21,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (1/1) ... [2022-11-19 06:33:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:33:21,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:33:21,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:33:21,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa5e849f-adf8-4861-9605-a9e91c12ba6f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:33:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-11-19 06:33:21,835 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-11-19 06:33:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-11-19 06:33:21,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-11-19 06:33:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-19 06:33:21,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-19 06:33:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-19 06:33:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:33:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:33:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:33:21,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:33:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:33:21,838 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:33:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-11-19 06:33:21,838 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-11-19 06:33:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-19 06:33:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-19 06:33:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-11-19 06:33:21,839 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-11-19 06:33:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:33:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:33:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-11-19 06:33:21,840 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-11-19 06:33:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-11-19 06:33:21,841 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-11-19 06:33:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-11-19 06:33:21,842 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-11-19 06:33:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-11-19 06:33:21,842 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-11-19 06:33:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-11-19 06:33:21,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-11-19 06:33:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_5_4 [2022-11-19 06:33:21,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_5_4 [2022-11-19 06:33:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2022-11-19 06:33:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2022-11-19 06:33:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-19 06:33:21,844 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-19 06:33:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-11-19 06:33:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-11-19 06:33:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:33:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-19 06:33:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-19 06:33:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:33:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-19 06:33:21,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-19 06:33:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:33:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 06:33:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-19 06:33:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-11-19 06:33:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-11-19 06:33:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:33:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:33:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-19 06:33:21,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_imon_driver_exit_11_2 [2022-11-19 06:33:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure imon_resume [2022-11-19 06:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_resume [2022-11-19 06:33:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-19 06:33:21,852 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-19 06:33:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-19 06:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-19 06:33:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-19 06:33:21,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-19 06:33:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-11-19 06:33:21,854 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-11-19 06:33:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-19 06:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-19 06:33:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-19 06:33:21,855 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-19 06:33:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:33:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-19 06:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-19 06:33:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-19 06:33:21,856 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-19 06:33:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-11-19 06:33:21,857 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-11-19 06:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-19 06:33:21,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-19 06:33:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-11-19 06:33:21,859 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-11-19 06:33:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-11-19 06:33:21,860 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-11-19 06:33:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:33:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 06:33:21,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-19 06:33:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-11-19 06:33:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-11-19 06:33:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:33:21,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:33:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-19 06:33:21,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-19 06:33:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-11-19 06:33:21,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-11-19 06:33:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-19 06:33:21,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-19 06:33:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-19 06:33:21,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-19 06:33:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-11-19 06:33:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-11-19 06:33:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:33:21,866 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:33:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 06:33:21,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-19 06:33:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:33:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-11-19 06:33:21,872 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-11-19 06:33:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-19 06:33:21,873 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-19 06:33:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-11-19 06:33:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-11-19 06:33:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:33:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:33:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:33:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-19 06:33:21,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-19 06:33:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-11-19 06:33:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-11-19 06:33:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-11-19 06:33:21,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-11-19 06:33:21,884 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-19 06:33:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-19 06:33:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:33:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-19 06:33:21,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-19 06:33:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:33:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-11-19 06:33:21,886 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-11-19 06:33:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-19 06:33:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-11-19 06:33:21,886 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-11-19 06:33:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure ___ratelimit [2022-11-19 06:33:21,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ___ratelimit [2022-11-19 06:33:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:33:21,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-19 06:33:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-11-19 06:33:21,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-11-19 06:33:21,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-19 06:33:21,888 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-19 06:33:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-19 06:33:21,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-19 06:33:21,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-11-19 06:33:21,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-11-19 06:33:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-11-19 06:33:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-11-19 06:33:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-11-19 06:33:21,889 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-11-19 06:33:21,889 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-11-19 06:33:21,890 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-11-19 06:33:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:33:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-19 06:33:21,890 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-19 06:33:21,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-19 06:33:21,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-19 06:33:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:33:21,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:33:22,734 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:33:22,738 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:33:23,075 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:33:43,694 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-19 06:33:43,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:33:44,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:33:44,782 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-19 06:33:44,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:44 BoogieIcfgContainer [2022-11-19 06:33:44,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:33:44,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:33:44,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:33:44,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:33:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:33:17" (1/3) ... [2022-11-19 06:33:44,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33355f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:44, skipping insertion in model container [2022-11-19 06:33:44,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:33:21" (2/3) ... [2022-11-19 06:33:44,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33355f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:33:44, skipping insertion in model container [2022-11-19 06:33:44,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:33:44" (3/3) ... [2022-11-19 06:33:44,807 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-rc-imon.cil.i [2022-11-19 06:33:44,833 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:33:44,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-19 06:33:44,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:33:44,962 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;@3c1b2794, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:33:44,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 06:33:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 1076 states, 656 states have (on average 1.3094512195121952) internal successors, (859), 665 states have internal predecessors, (859), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) [2022-11-19 06:33:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-11-19 06:33:45,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:45,021 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:45,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:33:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1018400533, now seen corresponding path program 1 times [2022-11-19 06:33:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433515706] [2022-11-19 06:33:45,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 06:33:46,358 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:46,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433515706] [2022-11-19 06:33:46,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433515706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:46,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:46,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:33:46,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192538601] [2022-11-19 06:33:46,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:46,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:33:46,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:46,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:33:46,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:46,420 INFO L87 Difference]: Start difference. First operand has 1076 states, 656 states have (on average 1.3094512195121952) internal successors, (859), 665 states have internal predecessors, (859), 350 states have call successors, (350), 69 states have call predecessors, (350), 68 states have return successors, (344), 343 states have call predecessors, (344), 344 states have call successors, (344) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:33:49,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:51,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:33:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:33:53,689 INFO L93 Difference]: Finished difference Result 3056 states and 4520 transitions. [2022-11-19 06:33:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:33:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 208 [2022-11-19 06:33:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:33:53,717 INFO L225 Difference]: With dead ends: 3056 [2022-11-19 06:33:53,717 INFO L226 Difference]: Without dead ends: 2004 [2022-11-19 06:33:53,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:33:53,732 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 1352 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 2905 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:33:53,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 2905 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 06:33:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-11-19 06:33:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1984. [2022-11-19 06:33:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1224 states have (on average 1.2998366013071896) internal successors, (1591), 1248 states have internal predecessors, (1591), 624 states have call successors, (624), 134 states have call predecessors, (624), 133 states have return successors, (620), 613 states have call predecessors, (620), 620 states have call successors, (620) [2022-11-19 06:33:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2835 transitions. [2022-11-19 06:33:54,005 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2835 transitions. Word has length 208 [2022-11-19 06:33:54,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:33:54,007 INFO L495 AbstractCegarLoop]: Abstraction has 1984 states and 2835 transitions. [2022-11-19 06:33:54,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:33:54,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2835 transitions. [2022-11-19 06:33:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-11-19 06:33:54,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:33:54,013 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:33:54,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:33:54,014 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_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:33:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:33:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1024832205, now seen corresponding path program 1 times [2022-11-19 06:33:54,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:33:54,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682483008] [2022-11-19 06:33:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:33:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:33:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:33:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 06:33:55,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:33:55,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682483008] [2022-11-19 06:33:55,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682483008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:33:55,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:33:55,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 06:33:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304065584] [2022-11-19 06:33:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:33:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:33:55,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:33:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:33:55,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:33:55,312 INFO L87 Difference]: Start difference. First operand 1984 states and 2835 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:34:00,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:03,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:07,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:09,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:10,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:16,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:16,175 INFO L93 Difference]: Finished difference Result 7373 states and 10488 transitions. [2022-11-19 06:34:16,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:34:16,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 209 [2022-11-19 06:34:16,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:16,211 INFO L225 Difference]: With dead ends: 7373 [2022-11-19 06:34:16,211 INFO L226 Difference]: Without dead ends: 5428 [2022-11-19 06:34:16,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:34:16,221 INFO L413 NwaCegarLoop]: 1946 mSDtfsCounter, 4102 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 2515 mSolverCounterSat, 720 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4287 SdHoareTripleChecker+Valid, 4146 SdHoareTripleChecker+Invalid, 3238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2515 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:16,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4287 Valid, 4146 Invalid, 3238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [720 Valid, 2515 Invalid, 3 Unknown, 0 Unchecked, 20.2s Time] [2022-11-19 06:34:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-11-19 06:34:16,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 5384. [2022-11-19 06:34:16,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5384 states, 3348 states have (on average 1.2983870967741935) internal successors, (4347), 3420 states have internal predecessors, (4347), 1650 states have call successors, (1650), 384 states have call predecessors, (1650), 383 states have return successors, (1646), 1615 states have call predecessors, (1646), 1646 states have call successors, (1646) [2022-11-19 06:34:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5384 states to 5384 states and 7643 transitions. [2022-11-19 06:34:16,677 INFO L78 Accepts]: Start accepts. Automaton has 5384 states and 7643 transitions. Word has length 209 [2022-11-19 06:34:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:16,678 INFO L495 AbstractCegarLoop]: Abstraction has 5384 states and 7643 transitions. [2022-11-19 06:34:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-19 06:34:16,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5384 states and 7643 transitions. [2022-11-19 06:34:16,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 06:34:16,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:16,682 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:16,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:34:16,683 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:34:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1740254794, now seen corresponding path program 1 times [2022-11-19 06:34:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:16,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136181986] [2022-11-19 06:34:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-19 06:34:17,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:17,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136181986] [2022-11-19 06:34:17,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136181986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:17,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:17,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:17,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883391064] [2022-11-19 06:34:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:17,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:17,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:17,093 INFO L87 Difference]: Start difference. First operand 5384 states and 7643 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:34:19,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:22,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:23,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:24,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:24,682 INFO L93 Difference]: Finished difference Result 11531 states and 16317 transitions. [2022-11-19 06:34:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:24,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 214 [2022-11-19 06:34:24,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:24,726 INFO L225 Difference]: With dead ends: 11531 [2022-11-19 06:34:24,726 INFO L226 Difference]: Without dead ends: 6186 [2022-11-19 06:34:24,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:24,749 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1065 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2780 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 06:34:24,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2022-11-19 06:34:25,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 6182. [2022-11-19 06:34:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6182 states, 3854 states have (on average 1.2939802802283342) internal successors, (4987), 3933 states have internal predecessors, (4987), 1869 states have call successors, (1869), 457 states have call predecessors, (1869), 456 states have return successors, (1865), 1833 states have call predecessors, (1865), 1865 states have call successors, (1865) [2022-11-19 06:34:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6182 states to 6182 states and 8721 transitions. [2022-11-19 06:34:25,226 INFO L78 Accepts]: Start accepts. Automaton has 6182 states and 8721 transitions. Word has length 214 [2022-11-19 06:34:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 6182 states and 8721 transitions. [2022-11-19 06:34:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:34:25,231 INFO L276 IsEmpty]: Start isEmpty. Operand 6182 states and 8721 transitions. [2022-11-19 06:34:25,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-11-19 06:34:25,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:25,236 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:25,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:34:25,237 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_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:34:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:25,238 INFO L85 PathProgramCache]: Analyzing trace with hash -426981646, now seen corresponding path program 1 times [2022-11-19 06:34:25,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:25,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501073798] [2022-11-19 06:34:25,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:25,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:25,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 06:34:25,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:25,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501073798] [2022-11-19 06:34:25,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501073798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:25,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:25,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627180112] [2022-11-19 06:34:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:25,789 INFO L87 Difference]: Start difference. First operand 6182 states and 8721 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:32,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:33,610 INFO L93 Difference]: Finished difference Result 17367 states and 24479 transitions. [2022-11-19 06:34:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:33,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 213 [2022-11-19 06:34:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:33,681 INFO L225 Difference]: With dead ends: 17367 [2022-11-19 06:34:33,681 INFO L226 Difference]: Without dead ends: 11224 [2022-11-19 06:34:33,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:33,706 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1365 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:33,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 2890 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 06:34:33,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11224 states. [2022-11-19 06:34:34,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11224 to 11194. [2022-11-19 06:34:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11194 states, 6970 states have (on average 1.2926829268292683) internal successors, (9010), 7131 states have internal predecessors, (9010), 3372 states have call successors, (3372), 850 states have call predecessors, (3372), 849 states have return successors, (3368), 3290 states have call predecessors, (3368), 3368 states have call successors, (3368) [2022-11-19 06:34:34,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 15750 transitions. [2022-11-19 06:34:34,625 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 15750 transitions. Word has length 213 [2022-11-19 06:34:34,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:34,625 INFO L495 AbstractCegarLoop]: Abstraction has 11194 states and 15750 transitions. [2022-11-19 06:34:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 15750 transitions. [2022-11-19 06:34:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-19 06:34:34,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:34,628 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:34,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:34:34,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:34:34,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 974011362, now seen corresponding path program 1 times [2022-11-19 06:34:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:34,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295671135] [2022-11-19 06:34:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 06:34:35,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:35,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295671135] [2022-11-19 06:34:35,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295671135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:35,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:35,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:35,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671925335] [2022-11-19 06:34:35,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:35,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:35,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:35,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:35,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:35,027 INFO L87 Difference]: Start difference. First operand 11194 states and 15750 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:40,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:42,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:42,893 INFO L93 Difference]: Finished difference Result 32161 states and 45152 transitions. [2022-11-19 06:34:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:42,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 214 [2022-11-19 06:34:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:43,045 INFO L225 Difference]: With dead ends: 32161 [2022-11-19 06:34:43,046 INFO L226 Difference]: Without dead ends: 21006 [2022-11-19 06:34:43,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:43,098 INFO L413 NwaCegarLoop]: 1700 mSDtfsCounter, 1361 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1361 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:43,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1361 Valid, 2984 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 468 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-19 06:34:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2022-11-19 06:34:44,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 20976. [2022-11-19 06:34:44,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20976 states, 13016 states have (on average 1.2861094038106946) internal successors, (16740), 13341 states have internal predecessors, (16740), 6314 states have call successors, (6314), 1644 states have call predecessors, (6314), 1643 states have return successors, (6310), 6140 states have call predecessors, (6310), 6310 states have call successors, (6310) [2022-11-19 06:34:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20976 states to 20976 states and 29364 transitions. [2022-11-19 06:34:44,761 INFO L78 Accepts]: Start accepts. Automaton has 20976 states and 29364 transitions. Word has length 214 [2022-11-19 06:34:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:44,762 INFO L495 AbstractCegarLoop]: Abstraction has 20976 states and 29364 transitions. [2022-11-19 06:34:44,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 20976 states and 29364 transitions. [2022-11-19 06:34:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-11-19 06:34:44,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:44,767 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:34:44,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:34:44,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:34:44,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:44,772 INFO L85 PathProgramCache]: Analyzing trace with hash 175609729, now seen corresponding path program 1 times [2022-11-19 06:34:44,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:44,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766693682] [2022-11-19 06:34:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:44,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:45,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2022-11-19 06:34:45,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:45,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766693682] [2022-11-19 06:34:45,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766693682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:45,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:45,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:45,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732658564] [2022-11-19 06:34:45,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:45,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:45,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:45,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:45,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:45,169 INFO L87 Difference]: Start difference. First operand 20976 states and 29364 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:49,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:34:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:34:53,437 INFO L93 Difference]: Finished difference Result 51589 states and 72026 transitions. [2022-11-19 06:34:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:34:53,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 219 [2022-11-19 06:34:53,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:34:53,636 INFO L225 Difference]: With dead ends: 51589 [2022-11-19 06:34:53,636 INFO L226 Difference]: Without dead ends: 30652 [2022-11-19 06:34:53,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:53,723 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 813 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:34:53,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2767 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 472 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2022-11-19 06:34:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30652 states. [2022-11-19 06:34:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30652 to 30584. [2022-11-19 06:34:55,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30584 states, 19186 states have (on average 1.2809340143854895) internal successors, (24576), 19709 states have internal predecessors, (24576), 8902 states have call successors, (8902), 2494 states have call predecessors, (8902), 2493 states have return successors, (8898), 8530 states have call predecessors, (8898), 8898 states have call successors, (8898) [2022-11-19 06:34:55,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30584 states to 30584 states and 42376 transitions. [2022-11-19 06:34:55,909 INFO L78 Accepts]: Start accepts. Automaton has 30584 states and 42376 transitions. Word has length 219 [2022-11-19 06:34:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:34:55,910 INFO L495 AbstractCegarLoop]: Abstraction has 30584 states and 42376 transitions. [2022-11-19 06:34:55,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-19 06:34:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 30584 states and 42376 transitions. [2022-11-19 06:34:55,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-19 06:34:55,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:34:55,916 INFO L195 NwaCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2022-11-19 06:34:55,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:34:55,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:34:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:34:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1074956068, now seen corresponding path program 1 times [2022-11-19 06:34:55,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:34:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724306138] [2022-11-19 06:34:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:34:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:34:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:34:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2022-11-19 06:34:56,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:34:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724306138] [2022-11-19 06:34:56,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724306138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:34:56,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:34:56,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:34:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917123405] [2022-11-19 06:34:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:34:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:34:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:34:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:34:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:34:56,289 INFO L87 Difference]: Start difference. First operand 30584 states and 42376 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:35:04,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:07,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:07,621 INFO L93 Difference]: Finished difference Result 90096 states and 124910 transitions. [2022-11-19 06:35:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:35:07,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 239 [2022-11-19 06:35:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:08,008 INFO L225 Difference]: With dead ends: 90096 [2022-11-19 06:35:08,008 INFO L226 Difference]: Without dead ends: 59551 [2022-11-19 06:35:08,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:35:08,135 INFO L413 NwaCegarLoop]: 2429 mSDtfsCounter, 1437 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 3721 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:08,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 3721 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-19 06:35:08,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59551 states. [2022-11-19 06:35:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59551 to 59439. [2022-11-19 06:35:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59439 states, 37300 states have (on average 1.2805093833780161) internal successors, (47763), 38326 states have internal predecessors, (47763), 17311 states have call successors, (17311), 4874 states have call predecessors, (17311), 4825 states have return successors, (17307), 16526 states have call predecessors, (17307), 17307 states have call successors, (17307) [2022-11-19 06:35:12,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59439 states to 59439 states and 82381 transitions. [2022-11-19 06:35:12,278 INFO L78 Accepts]: Start accepts. Automaton has 59439 states and 82381 transitions. Word has length 239 [2022-11-19 06:35:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:12,280 INFO L495 AbstractCegarLoop]: Abstraction has 59439 states and 82381 transitions. [2022-11-19 06:35:12,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-19 06:35:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 59439 states and 82381 transitions. [2022-11-19 06:35:12,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-11-19 06:35:12,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:12,287 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:35:12,288 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:35:12,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash 554129211, now seen corresponding path program 1 times [2022-11-19 06:35:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:12,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395135747] [2022-11-19 06:35:12,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:12,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:14,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1567 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1567 trivial. 0 not checked. [2022-11-19 06:35:14,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:14,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395135747] [2022-11-19 06:35:14,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395135747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:14,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:14,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:35:14,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676869143] [2022-11-19 06:35:14,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:35:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:35:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:35:14,056 INFO L87 Difference]: Start difference. First operand 59439 states and 82381 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 06:35:17,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:20,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:23,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:27,921 INFO L93 Difference]: Finished difference Result 65497 states and 88780 transitions. [2022-11-19 06:35:27,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:35:27,922 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 259 [2022-11-19 06:35:27,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:28,291 INFO L225 Difference]: With dead ends: 65497 [2022-11-19 06:35:28,292 INFO L226 Difference]: Without dead ends: 65495 [2022-11-19 06:35:28,317 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 [2022-11-19 06:35:28,318 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 954 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:28,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 4464 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 753 Invalid, 1 Unknown, 0 Unchecked, 11.5s Time] [2022-11-19 06:35:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65495 states. [2022-11-19 06:35:32,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65495 to 65491. [2022-11-19 06:35:32,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65491 states, 40869 states have (on average 1.2691771269177128) internal successors, (51870), 41895 states have internal predecessors, (51870), 18455 states have call successors, (18455), 6213 states have call predecessors, (18455), 6164 states have return successors, (18451), 17670 states have call predecessors, (18451), 18451 states have call successors, (18451) [2022-11-19 06:35:32,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65491 states to 65491 states and 88776 transitions. [2022-11-19 06:35:32,806 INFO L78 Accepts]: Start accepts. Automaton has 65491 states and 88776 transitions. Word has length 259 [2022-11-19 06:35:32,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:32,807 INFO L495 AbstractCegarLoop]: Abstraction has 65491 states and 88776 transitions. [2022-11-19 06:35:32,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-19 06:35:32,808 INFO L276 IsEmpty]: Start isEmpty. Operand 65491 states and 88776 transitions. [2022-11-19 06:35:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-19 06:35:32,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:32,816 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 4, 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] [2022-11-19 06:35:32,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 06:35:32,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:35:32,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash 91127066, now seen corresponding path program 1 times [2022-11-19 06:35:32,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:32,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495015730] [2022-11-19 06:35:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1563 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2022-11-19 06:35:34,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:34,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495015730] [2022-11-19 06:35:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495015730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:34,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:34,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:35:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395995304] [2022-11-19 06:35:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:35:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:35:34,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:35:34,092 INFO L87 Difference]: Start difference. First operand 65491 states and 88776 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 06:35:38,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:39,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:41,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:42,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:44,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:45,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:35:49,190 INFO L93 Difference]: Finished difference Result 65497 states and 88781 transitions. [2022-11-19 06:35:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:35:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 262 [2022-11-19 06:35:49,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:35:49,445 INFO L225 Difference]: With dead ends: 65497 [2022-11-19 06:35:49,445 INFO L226 Difference]: Without dead ends: 65495 [2022-11-19 06:35:49,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:35:49,473 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1447 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:35:49,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 3885 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-19 06:35:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65495 states. [2022-11-19 06:35:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65495 to 65495. [2022-11-19 06:35:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65495 states, 40872 states have (on average 1.269157369348209) internal successors, (51873), 41898 states have internal predecessors, (51873), 18455 states have call successors, (18455), 6214 states have call predecessors, (18455), 6165 states have return successors, (18451), 17670 states have call predecessors, (18451), 18451 states have call successors, (18451) [2022-11-19 06:35:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65495 states to 65495 states and 88779 transitions. [2022-11-19 06:35:52,951 INFO L78 Accepts]: Start accepts. Automaton has 65495 states and 88779 transitions. Word has length 262 [2022-11-19 06:35:52,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:35:52,951 INFO L495 AbstractCegarLoop]: Abstraction has 65495 states and 88779 transitions. [2022-11-19 06:35:52,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 06:35:52,952 INFO L276 IsEmpty]: Start isEmpty. Operand 65495 states and 88779 transitions. [2022-11-19 06:35:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-19 06:35:52,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:35:52,959 INFO L195 NwaCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:35:52,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 06:35:52,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [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 (and 1 more)] === [2022-11-19 06:35:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:35:52,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1705417019, now seen corresponding path program 1 times [2022-11-19 06:35:52,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:35:52,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590537662] [2022-11-19 06:35:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:35:52,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:35:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:35:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1571 trivial. 0 not checked. [2022-11-19 06:35:54,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:35:54,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590537662] [2022-11-19 06:35:54,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590537662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:35:54,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:35:54,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:35:54,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897762427] [2022-11-19 06:35:54,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:35:54,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:35:54,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:35:54,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:35:54,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:35:54,272 INFO L87 Difference]: Start difference. First operand 65495 states and 88779 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 06:35:57,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:35:59,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:01,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:03,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:04,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:06,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:08,551 INFO L93 Difference]: Finished difference Result 65501 states and 88784 transitions. [2022-11-19 06:36:08,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:36:08,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 269 [2022-11-19 06:36:08,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:08,802 INFO L225 Difference]: With dead ends: 65501 [2022-11-19 06:36:08,803 INFO L226 Difference]: Without dead ends: 65499 [2022-11-19 06:36:08,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:36:08,833 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 1446 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 3885 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:08,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 3885 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 655 Invalid, 2 Unknown, 0 Unchecked, 11.5s Time] [2022-11-19 06:36:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65499 states. [2022-11-19 06:36:12,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65499 to 65499. [2022-11-19 06:36:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65499 states, 40875 states have (on average 1.269137614678899) internal successors, (51876), 41901 states have internal predecessors, (51876), 18455 states have call successors, (18455), 6215 states have call predecessors, (18455), 6166 states have return successors, (18451), 17670 states have call predecessors, (18451), 18451 states have call successors, (18451) [2022-11-19 06:36:12,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65499 states to 65499 states and 88782 transitions. [2022-11-19 06:36:12,641 INFO L78 Accepts]: Start accepts. Automaton has 65499 states and 88782 transitions. Word has length 269 [2022-11-19 06:36:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:36:12,642 INFO L495 AbstractCegarLoop]: Abstraction has 65499 states and 88782 transitions. [2022-11-19 06:36:12,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-19 06:36:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 65499 states and 88782 transitions. [2022-11-19 06:36:12,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-19 06:36:12,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:36:12,648 INFO L195 NwaCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:36:12,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 06:36:12,648 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_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-19 06:36:12,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:36:12,649 INFO L85 PathProgramCache]: Analyzing trace with hash 756581868, now seen corresponding path program 1 times [2022-11-19 06:36:12,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:36:12,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548978307] [2022-11-19 06:36:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:36:12,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:36:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:36:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1612 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1605 trivial. 0 not checked. [2022-11-19 06:36:13,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:36:13,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548978307] [2022-11-19 06:36:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548978307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:36:13,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:36:13,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:36:13,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107154575] [2022-11-19 06:36:13,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:36:13,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:36:13,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:36:13,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:36:13,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:36:13,012 INFO L87 Difference]: Start difference. First operand 65499 states and 88782 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-19 06:36:16,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:17,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:20,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:36:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:36:26,987 INFO L93 Difference]: Finished difference Result 160175 states and 217228 transitions. [2022-11-19 06:36:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:36:26,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 269 [2022-11-19 06:36:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:36:27,494 INFO L225 Difference]: With dead ends: 160175 [2022-11-19 06:36:27,494 INFO L226 Difference]: Without dead ends: 94809 [2022-11-19 06:36:28,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:36:28,004 INFO L413 NwaCegarLoop]: 2296 mSDtfsCounter, 1343 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:36:28,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 3561 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-19 06:36:28,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94809 states.