./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_fs-autofs4-autofs4.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW --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 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 --- 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-4e7fbc6 [2022-11-23 14:13:58,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:13:58,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:13:58,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:13:58,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:13:58,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:13:58,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:13:58,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:13:58,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:13:58,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:13:58,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:13:58,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:13:58,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:13:58,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:13:58,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:13:58,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:13:58,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:13:58,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:13:58,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:13:58,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:13:58,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:13:58,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:13:58,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:13:58,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:13:58,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:13:58,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:13:58,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:13:58,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:13:58,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:13:58,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:13:58,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:13:58,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:13:58,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:13:58,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:13:58,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:13:58,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:13:58,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:13:58,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:13:58,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:13:58,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:13:58,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:13:58,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:13:58,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:13:58,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:13:58,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:13:58,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:13:58,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:13:58,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:13:58,344 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:13:58,344 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:13:58,345 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:13:58,345 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:13:58,346 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:13:58,346 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:13:58,346 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:13:58,346 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:13:58,347 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:13:58,347 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:13:58,347 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:13:58,347 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:13:58,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:13:58,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:13:58,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:13:58,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:13:58,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:13:58,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:13:58,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:13:58,350 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:13:58,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:13:58,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:13:58,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:13:58,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:13:58,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:13:58,352 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:13:58,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:13:58,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:13:58,353 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:13:58,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:13:58,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:13:58,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:13:58,354 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_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4035b79a2162ba317b65ff4b4b50beff318d26f8217214f4a55e9e0e820898d1 [2022-11-23 14:13:58,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:13:58,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:13:58,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:13:58,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:13:58,714 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:13:58,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2022-11-23 14:14:01,693 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:14:02,406 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:14:02,407 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2022-11-23 14:14:02,482 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/data/81f86e401/992669dd3e37492199f6e62a3dbf3605/FLAG5f85be3c6 [2022-11-23 14:14:02,500 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/data/81f86e401/992669dd3e37492199f6e62a3dbf3605 [2022-11-23 14:14:02,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:14:02,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:14:02,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:02,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:14:02,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:14:02,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:02" (1/1) ... [2022-11-23 14:14:02,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b7e588 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:02, skipping insertion in model container [2022-11-23 14:14:02,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:02" (1/1) ... [2022-11-23 14:14:02,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:14:02,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:14:06,004 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2022-11-23 14:14:06,008 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2022-11-23 14:14:06,009 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2022-11-23 14:14:06,011 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2022-11-23 14:14:06,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:06,093 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:14:06,629 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387172,387185] [2022-11-23 14:14:06,630 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387338,387351] [2022-11-23 14:14:06,631 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387502,387515] [2022-11-23 14:14:06,635 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i[387667,387680] [2022-11-23 14:14:06,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:14:06,854 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:14:06,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06 WrapperNode [2022-11-23 14:14:06,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:14:06,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:06,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:14:06,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:14:06,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,230 INFO L138 Inliner]: procedures = 518, calls = 3782, calls flagged for inlining = 278, calls inlined = 255, statements flattened = 9323 [2022-11-23 14:14:07,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:14:07,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:14:07,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:14:07,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:14:07,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:14:07,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:14:07,676 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:14:07,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:14:07,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (1/1) ... [2022-11-23 14:14:07,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:14:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:07,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:14:07,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de42217b-d26b-4c3c-9fb0-47f75103d022/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:14:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_evict_inode [2022-11-23 14:14:07,873 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_evict_inode [2022-11-23 14:14:07,873 INFO L130 BoogieDeclarations]: Found specification of procedure dput [2022-11-23 14:14:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dput [2022-11-23 14:14:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:14:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:14:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_unlink [2022-11-23 14:14:07,874 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_unlink [2022-11-23 14:14:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_get_inode [2022-11-23 14:14:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_get_inode [2022-11-23 14:14:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-23 14:14:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-23 14:14:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:14:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:14:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_lseek [2022-11-23 14:14:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_lseek [2022-11-23 14:14:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure do_expire_wait [2022-11-23 14:14:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure do_expire_wait [2022-11-23 14:14:07,877 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-23 14:14:07,877 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-23 14:14:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure dget [2022-11-23 14:14:07,878 INFO L138 BoogieDeclarations]: Found implementation of procedure dget [2022-11-23 14:14:07,878 INFO L130 BoogieDeclarations]: Found specification of procedure lock_release [2022-11-23 14:14:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_release [2022-11-23 14:14:07,879 INFO L130 BoogieDeclarations]: Found specification of procedure current_kernel_time [2022-11-23 14:14:07,879 INFO L138 BoogieDeclarations]: Found implementation of procedure current_kernel_time [2022-11-23 14:14:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_indirect [2022-11-23 14:14:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_indirect [2022-11-23 14:14:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-11-23 14:14:07,880 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-11-23 14:14:07,880 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_clear_managed [2022-11-23 14:14:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_clear_managed [2022-11-23 14:14:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:14:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:14:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure from_kgid_munged [2022-11-23 14:14:07,881 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kgid_munged [2022-11-23 14:14:07,881 INFO L130 BoogieDeclarations]: Found specification of procedure follow_down_one [2022-11-23 14:14:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure follow_down_one [2022-11-23 14:14:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_show_options [2022-11-23 14:14:07,882 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_show_options [2022-11-23 14:14:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure __autofs4_add_expiring [2022-11-23 14:14:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __autofs4_add_expiring [2022-11-23 14:14:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:14:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_expire_wait [2022-11-23 14:14:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_expire_wait [2022-11-23 14:14:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl [2022-11-23 14:14:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl [2022-11-23 14:14:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-11-23 14:14:07,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-11-23 14:14:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec_and_test [2022-11-23 14:14:07,885 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec_and_test [2022-11-23 14:14:07,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:14:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:14:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:14:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2022-11-23 14:14:07,886 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:14:07,886 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:14:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:14:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure d_count [2022-11-23 14:14:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure d_count [2022-11-23 14:14:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:14:07,887 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:14:07,887 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___4 [2022-11-23 14:14:07,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___4 [2022-11-23 14:14:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure get_current___2 [2022-11-23 14:14:07,888 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current___2 [2022-11-23 14:14:07,888 INFO L130 BoogieDeclarations]: Found specification of procedure from_kuid_munged [2022-11-23 14:14:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure from_kuid_munged [2022-11-23 14:14:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:14:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:14:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:14:07,889 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:14:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2022-11-23 14:14:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2022-11-23 14:14:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_oz_mode [2022-11-23 14:14:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_oz_mode [2022-11-23 14:14:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_do_expire_multi [2022-11-23 14:14:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_do_expire_multi [2022-11-23 14:14:07,891 INFO L130 BoogieDeclarations]: Found specification of procedure __task_pid_nr_ns [2022-11-23 14:14:07,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __task_pid_nr_ns [2022-11-23 14:14:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:14:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:14:07,892 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_sbi [2022-11-23 14:14:07,892 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_sbi [2022-11-23 14:14:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:14:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-23 14:14:07,893 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-23 14:14:07,893 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_new_ino [2022-11-23 14:14:07,894 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_new_ino [2022-11-23 14:14:07,894 INFO L130 BoogieDeclarations]: Found specification of procedure simple_empty [2022-11-23 14:14:07,894 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_empty [2022-11-23 14:14:07,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:14:07,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-11-23 14:14:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-11-23 14:14:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_can_expire [2022-11-23 14:14:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_can_expire [2022-11-23 14:14:07,895 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_ino [2022-11-23 14:14:07,895 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_ino [2022-11-23 14:14:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:14:07,896 INFO L130 BoogieDeclarations]: Found specification of procedure fget [2022-11-23 14:14:07,896 INFO L138 BoogieDeclarations]: Found implementation of procedure fget [2022-11-23 14:14:07,897 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_open [2022-11-23 14:14:07,897 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_open [2022-11-23 14:14:07,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:14:07,901 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:14:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_rmdir [2022-11-23 14:14:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_rmdir [2022-11-23 14:14:07,902 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount [2022-11-23 14:14:07,902 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount [2022-11-23 14:14:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_dev_ioctl_exit [2022-11-23 14:14:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_dev_ioctl_exit [2022-11-23 14:14:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-23 14:14:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-23 14:14:07,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-11-23 14:14:07,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-11-23 14:14:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_open [2022-11-23 14:14:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_open [2022-11-23 14:14:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-11-23 14:14:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-11-23 14:14:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure clear_nlink [2022-11-23 14:14:07,910 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_nlink [2022-11-23 14:14:07,910 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_trigger [2022-11-23 14:14:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_trigger [2022-11-23 14:14:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:14:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2022-11-23 14:14:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2022-11-23 14:14:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-11-23 14:14:07,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-11-23 14:14:07,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-11-23 14:14:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-11-23 14:14:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_3 [2022-11-23 14:14:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_3 [2022-11-23 14:14:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-11-23 14:14:07,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-11-23 14:14:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2022-11-23 14:14:07,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2022-11-23 14:14:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2022-11-23 14:14:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:14:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 14:14:07,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 14:14:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:14:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:14:07,913 INFO L130 BoogieDeclarations]: Found specification of procedure simple_positive [2022-11-23 14:14:07,914 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_positive [2022-11-23 14:14:07,914 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-11-23 14:14:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-11-23 14:14:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure path_get [2022-11-23 14:14:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure path_get [2022-11-23 14:14:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure dget_dlock [2022-11-23 14:14:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure dget_dlock [2022-11-23 14:14:07,915 INFO L130 BoogieDeclarations]: Found specification of procedure d_lookup [2022-11-23 14:14:07,915 INFO L138 BoogieDeclarations]: Found implementation of procedure d_lookup [2022-11-23 14:14:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 14:14:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 14:14:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure recalc_sigpending [2022-11-23 14:14:07,916 INFO L138 BoogieDeclarations]: Found implementation of procedure recalc_sigpending [2022-11-23 14:14:07,916 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-23 14:14:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-23 14:14:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure d_drop [2022-11-23 14:14:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure d_drop [2022-11-23 14:14:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_mount [2022-11-23 14:14:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_mount [2022-11-23 14:14:07,917 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_type_indirect [2022-11-23 14:14:07,917 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_type_indirect [2022-11-23 14:14:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:14:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:14:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_wait [2022-11-23 14:14:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_wait [2022-11-23 14:14:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:14:07,918 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:14:07,918 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl [2022-11-23 14:14:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl [2022-11-23 14:14:07,919 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:14:07,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2022-11-23 14:14:07,920 INFO L130 BoogieDeclarations]: Found specification of procedure complete_all [2022-11-23 14:14:07,920 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_all [2022-11-23 14:14:07,921 INFO L130 BoogieDeclarations]: Found specification of procedure __kuid_val [2022-11-23 14:14:07,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __kuid_val [2022-11-23 14:14:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:14:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:14:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait_release [2022-11-23 14:14:07,922 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait_release [2022-11-23 14:14:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:14:07,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:14:07,922 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_ioctl_unlocked [2022-11-23 14:14:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_ioctl_unlocked [2022-11-23 14:14:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure file_inode [2022-11-23 14:14:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure file_inode [2022-11-23 14:14:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp [2022-11-23 14:14:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp [2022-11-23 14:14:07,923 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-23 14:14:07,923 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-23 14:14:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_root_compat_ioctl [2022-11-23 14:14:07,924 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_root_compat_ioctl [2022-11-23 14:14:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure read_seqretry [2022-11-23 14:14:07,924 INFO L138 BoogieDeclarations]: Found implementation of procedure read_seqretry [2022-11-23 14:14:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-23 14:14:07,924 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-23 14:14:07,924 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_readdir [2022-11-23 14:14:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_readdir [2022-11-23 14:14:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure d_instantiate [2022-11-23 14:14:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure d_instantiate [2022-11-23 14:14:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2022-11-23 14:14:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_pipe_mutex_of_autofs_sb_info [2022-11-23 14:14:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure may_umount_tree [2022-11-23 14:14:07,925 INFO L138 BoogieDeclarations]: Found implementation of procedure may_umount_tree [2022-11-23 14:14:07,925 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:14:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:14:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure simple_statfs [2022-11-23 14:14:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_statfs [2022-11-23 14:14:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:14:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:14:07,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_task_pid [2022-11-23 14:14:07,926 INFO L138 BoogieDeclarations]: Found implementation of procedure get_task_pid [2022-11-23 14:14:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure path_put [2022-11-23 14:14:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure path_put [2022-11-23 14:14:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_mount_busy [2022-11-23 14:14:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_mount_busy [2022-11-23 14:14:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure d_unhashed [2022-11-23 14:14:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure d_unhashed [2022-11-23 14:14:07,927 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-23 14:14:07,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-23 14:14:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_kill_sb [2022-11-23 14:14:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_kill_sb [2022-11-23 14:14:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:14:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:14:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:14:07,928 INFO L130 BoogieDeclarations]: Found specification of procedure generic_read_dir [2022-11-23 14:14:07,928 INFO L138 BoogieDeclarations]: Found implementation of procedure generic_read_dir [2022-11-23 14:14:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-23 14:14:07,933 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-23 14:14:07,933 INFO L130 BoogieDeclarations]: Found specification of procedure managed_dentry_set_managed [2022-11-23 14:14:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure managed_dentry_set_managed [2022-11-23 14:14:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:14:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del_entry [2022-11-23 14:14:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del_entry [2022-11-23 14:14:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2022-11-23 14:14:07,934 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2022-11-23 14:14:07,934 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:14:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 14:14:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:14:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-23 14:14:07,936 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-23 14:14:07,936 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:14:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:14:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure find_autofs_mount [2022-11-23 14:14:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure find_autofs_mount [2022-11-23 14:14:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:14:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:14:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-11-23 14:14:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-11-23 14:14:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure dcache_dir_close [2022-11-23 14:14:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure dcache_dir_close [2022-11-23 14:14:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure ns_of_pid [2022-11-23 14:14:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_of_pid [2022-11-23 14:14:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-23 14:14:07,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-23 14:14:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-23 14:14:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-23 14:14:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_clean_ino [2022-11-23 14:14:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_clean_ino [2022-11-23 14:14:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wq_mutex_of_autofs_sb_info [2022-11-23 14:14:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:14:07,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2022-11-23 14:14:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure kern_path_mountpoint [2022-11-23 14:14:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure kern_path_mountpoint [2022-11-23 14:14:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure get_next_positive_dentry [2022-11-23 14:14:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure get_next_positive_dentry [2022-11-23 14:14:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:14:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:14:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure __managed_dentry_set_managed [2022-11-23 14:14:07,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __managed_dentry_set_managed [2022-11-23 14:14:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:14:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2022-11-23 14:14:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_wait [2022-11-23 14:14:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_wait [2022-11-23 14:14:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_find_wait [2022-11-23 14:14:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_find_wait [2022-11-23 14:14:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2022-11-23 14:14:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2022-11-23 14:14:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-23 14:14:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_exit_autofs4_fs_8_2 [2022-11-23 14:14:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:14:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dentry_release [2022-11-23 14:14:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dentry_release [2022-11-23 14:14:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure task_pgrp_nr [2022-11-23 14:14:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pgrp_nr [2022-11-23 14:14:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:14:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:14:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure uid_eq [2022-11-23 14:14:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure uid_eq [2022-11-23 14:14:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_dir_symlink [2022-11-23 14:14:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_dir_symlink [2022-11-23 14:14:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure __kgid_val [2022-11-23 14:14:07,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __kgid_val [2022-11-23 14:14:07,943 INFO L130 BoogieDeclarations]: Found specification of procedure lock_acquire [2022-11-23 14:14:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_acquire [2022-11-23 14:14:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:14:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:14:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure d_mountpoint [2022-11-23 14:14:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure d_mountpoint [2022-11-23 14:14:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-23 14:14:07,944 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-23 14:14:07,944 INFO L130 BoogieDeclarations]: Found specification of procedure have_submounts [2022-11-23 14:14:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure have_submounts [2022-11-23 14:14:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2022-11-23 14:14:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2022-11-23 14:14:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-23 14:14:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-23 14:14:07,945 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-23 14:14:07,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-23 14:14:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-23 14:14:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-23 14:14:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure autofs_prepare_pipe [2022-11-23 14:14:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs_prepare_pipe [2022-11-23 14:14:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-11-23 14:14:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-11-23 14:14:07,946 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_del_active [2022-11-23 14:14:07,946 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_del_active [2022-11-23 14:14:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:14:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:14:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:14:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:14:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_nested [2022-11-23 14:14:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_nested [2022-11-23 14:14:07,947 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-23 14:14:07,947 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-23 14:14:07,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:14:07,948 INFO L130 BoogieDeclarations]: Found specification of procedure d_add [2022-11-23 14:14:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure d_add [2022-11-23 14:14:07,948 INFO L130 BoogieDeclarations]: Found specification of procedure autofs4_catatonic_mode [2022-11-23 14:14:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure autofs4_catatonic_mode [2022-11-23 14:14:07,948 INFO L130 BoogieDeclarations]: Found specification of procedure gid_eq [2022-11-23 14:14:07,948 INFO L138 BoogieDeclarations]: Found implementation of procedure gid_eq [2022-11-23 14:14:07,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-11-23 14:14:07,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-11-23 14:14:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-11-23 14:14:07,949 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2022-11-23 14:14:07,949 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2022-11-23 14:14:09,314 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:14:09,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:14:09,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:14:10,420 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint switch_break: call ULTIMATE.dealloc(~#descriptor~12#1.base, ~#descriptor~12#1.offset);havoc ~#descriptor~12#1.base, ~#descriptor~12#1.offset; [2022-11-23 14:14:18,510 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-11-23 14:14:18,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:14:20,997 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:14:20,997 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-23 14:14:21,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:21 BoogieIcfgContainer [2022-11-23 14:14:21,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:14:21,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:14:21,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:14:21,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:14:21,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:02" (1/3) ... [2022-11-23 14:14:21,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0a0ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:21, skipping insertion in model container [2022-11-23 14:14:21,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:06" (2/3) ... [2022-11-23 14:14:21,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e0a0ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:21, skipping insertion in model container [2022-11-23 14:14:21,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:21" (3/3) ... [2022-11-23 14:14:21,013 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_fs-autofs4-autofs4.cil.i [2022-11-23 14:14:21,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:14:21,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-11-23 14:14:21,141 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:14:21,147 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;@66063bd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:14:21,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 14:14:21,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) [2022-11-23 14:14:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-11-23 14:14:21,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:21,205 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:21,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:14:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:21,210 INFO L85 PathProgramCache]: Analyzing trace with hash -277643330, now seen corresponding path program 1 times [2022-11-23 14:14:21,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873213294] [2022-11-23 14:14:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:21,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:22,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-23 14:14:22,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873213294] [2022-11-23 14:14:22,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873213294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:22,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:22,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:22,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592669593] [2022-11-23 14:14:22,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:22,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:22,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:22,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:22,612 INFO L87 Difference]: Start difference. First operand has 2608 states, 1550 states have (on average 1.3141935483870968) internal successors, (2037), 1600 states have internal predecessors, (2037), 894 states have call successors, (894), 162 states have call predecessors, (894), 161 states have return successors, (883), 877 states have call predecessors, (883), 883 states have call successors, (883) Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 14:14:25,222 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 [] [2022-11-23 14:14:29,328 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 [] [2022-11-23 14:14:29,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:29,819 INFO L93 Difference]: Finished difference Result 7356 states and 10870 transitions. [2022-11-23 14:14:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:29,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 465 [2022-11-23 14:14:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:29,883 INFO L225 Difference]: With dead ends: 7356 [2022-11-23 14:14:29,883 INFO L226 Difference]: Without dead ends: 4821 [2022-11-23 14:14:29,907 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 [2022-11-23 14:14:29,911 INFO L413 NwaCegarLoop]: 4960 mSDtfsCounter, 3285 mSDsluCounter, 3342 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 11 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3287 SdHoareTripleChecker+Valid, 8302 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:29,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3287 Valid, 8302 Invalid, 925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 912 Invalid, 2 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 14:14:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4821 states. [2022-11-23 14:14:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4821 to 4817. [2022-11-23 14:14:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4817 states, 2876 states have (on average 1.3066759388038942) internal successors, (3758), 2963 states have internal predecessors, (3758), 1625 states have call successors, (1625), 314 states have call predecessors, (1625), 313 states have return successors, (1623), 1610 states have call predecessors, (1623), 1621 states have call successors, (1623) [2022-11-23 14:14:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 7006 transitions. [2022-11-23 14:14:30,389 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 7006 transitions. Word has length 465 [2022-11-23 14:14:30,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:30,395 INFO L495 AbstractCegarLoop]: Abstraction has 4817 states and 7006 transitions. [2022-11-23 14:14:30,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2022-11-23 14:14:30,395 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 7006 transitions. [2022-11-23 14:14:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-23 14:14:30,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:30,419 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:30,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:14:30,420 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:14:30,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:30,421 INFO L85 PathProgramCache]: Analyzing trace with hash 317232100, now seen corresponding path program 1 times [2022-11-23 14:14:30,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:30,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35510643] [2022-11-23 14:14:30,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:30,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:31,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7659 trivial. 0 not checked. [2022-11-23 14:14:31,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:31,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35510643] [2022-11-23 14:14:31,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35510643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690734500] [2022-11-23 14:14:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:31,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:31,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:31,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:31,092 INFO L87 Difference]: Start difference. First operand 4817 states and 7006 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:14:33,464 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 [] [2022-11-23 14:14:37,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:37,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:37,663 INFO L93 Difference]: Finished difference Result 11682 states and 16956 transitions. [2022-11-23 14:14:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:37,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 494 [2022-11-23 14:14:37,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:37,712 INFO L225 Difference]: With dead ends: 11682 [2022-11-23 14:14:37,713 INFO L226 Difference]: Without dead ends: 6954 [2022-11-23 14:14:37,734 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 [2022-11-23 14:14:37,735 INFO L413 NwaCegarLoop]: 4903 mSDtfsCounter, 3175 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 8235 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:37,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3177 Valid, 8235 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 936 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 14:14:37,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6954 states. [2022-11-23 14:14:38,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6954 to 6936. [2022-11-23 14:14:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6936 states, 4152 states have (on average 1.3049132947976878) internal successors, (5418), 4280 states have internal predecessors, (5418), 2311 states have call successors, (2311), 471 states have call predecessors, (2311), 470 states have return successors, (2315), 2288 states have call predecessors, (2315), 2307 states have call successors, (2315) [2022-11-23 14:14:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6936 states to 6936 states and 10044 transitions. [2022-11-23 14:14:38,137 INFO L78 Accepts]: Start accepts. Automaton has 6936 states and 10044 transitions. Word has length 494 [2022-11-23 14:14:38,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:38,146 INFO L495 AbstractCegarLoop]: Abstraction has 6936 states and 10044 transitions. [2022-11-23 14:14:38,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:14:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 6936 states and 10044 transitions. [2022-11-23 14:14:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2022-11-23 14:14:38,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:38,162 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:38,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:14:38,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:14:38,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 2060169477, now seen corresponding path program 1 times [2022-11-23 14:14:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623952250] [2022-11-23 14:14:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:38,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7659 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7659 trivial. 0 not checked. [2022-11-23 14:14:38,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:38,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623952250] [2022-11-23 14:14:38,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623952250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:38,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:38,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837717042] [2022-11-23 14:14:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:38,700 INFO L87 Difference]: Start difference. First operand 6936 states and 10044 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:14:42,020 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 [] [2022-11-23 14:14:44,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:45,218 INFO L93 Difference]: Finished difference Result 17720 states and 25602 transitions. [2022-11-23 14:14:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:45,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) Word has length 493 [2022-11-23 14:14:45,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:45,323 INFO L225 Difference]: With dead ends: 17720 [2022-11-23 14:14:45,323 INFO L226 Difference]: Without dead ends: 10873 [2022-11-23 14:14:45,366 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 [2022-11-23 14:14:45,369 INFO L413 NwaCegarLoop]: 4112 mSDtfsCounter, 3041 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 7445 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:45,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 7445 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 844 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:14:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10873 states. [2022-11-23 14:14:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10873 to 10851. [2022-11-23 14:14:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10851 states, 6492 states have (on average 1.3005237215033887) internal successors, (8443), 6702 states have internal predecessors, (8443), 3588 states have call successors, (3588), 769 states have call predecessors, (3588), 768 states have return successors, (3606), 3547 states have call predecessors, (3606), 3584 states have call successors, (3606) [2022-11-23 14:14:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10851 states to 10851 states and 15637 transitions. [2022-11-23 14:14:46,083 INFO L78 Accepts]: Start accepts. Automaton has 10851 states and 15637 transitions. Word has length 493 [2022-11-23 14:14:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:46,085 INFO L495 AbstractCegarLoop]: Abstraction has 10851 states and 15637 transitions. [2022-11-23 14:14:46,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (51), 3 states have call predecessors, (51), 3 states have call successors, (51) [2022-11-23 14:14:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 10851 states and 15637 transitions. [2022-11-23 14:14:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2022-11-23 14:14:46,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:46,098 INFO L195 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:14:46,098 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:14:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1396023296, now seen corresponding path program 1 times [2022-11-23 14:14:46,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:46,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651172719] [2022-11-23 14:14:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:46,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7656 trivial. 0 not checked. [2022-11-23 14:14:46,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:46,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651172719] [2022-11-23 14:14:46,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651172719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:46,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:46,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:14:46,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956047503] [2022-11-23 14:14:46,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:46,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:46,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:46,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:46,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:46,801 INFO L87 Difference]: Start difference. First operand 10851 states and 15637 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 14:14:49,758 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 [] [2022-11-23 14:14:51,915 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 [] [2022-11-23 14:14:53,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:53,276 INFO L93 Difference]: Finished difference Result 28345 states and 40758 transitions. [2022-11-23 14:14:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:14:53,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 488 [2022-11-23 14:14:53,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:53,400 INFO L225 Difference]: With dead ends: 28345 [2022-11-23 14:14:53,400 INFO L226 Difference]: Without dead ends: 17583 [2022-11-23 14:14:53,454 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 [2022-11-23 14:14:53,457 INFO L413 NwaCegarLoop]: 4493 mSDtfsCounter, 3195 mSDsluCounter, 3336 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3199 SdHoareTripleChecker+Valid, 7829 SdHoareTripleChecker+Invalid, 888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:53,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3199 Valid, 7829 Invalid, 888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:14:53,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17583 states. [2022-11-23 14:14:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17583 to 17549. [2022-11-23 14:14:54,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17549 states, 10546 states have (on average 1.2992603830836336) internal successors, (13702), 10903 states have internal predecessors, (13702), 5704 states have call successors, (5704), 1300 states have call predecessors, (5704), 1296 states have return successors, (5762), 5628 states have call predecessors, (5762), 5700 states have call successors, (5762) [2022-11-23 14:14:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17549 states to 17549 states and 25168 transitions. [2022-11-23 14:14:54,576 INFO L78 Accepts]: Start accepts. Automaton has 17549 states and 25168 transitions. Word has length 488 [2022-11-23 14:14:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:54,577 INFO L495 AbstractCegarLoop]: Abstraction has 17549 states and 25168 transitions. [2022-11-23 14:14:54,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (55), 2 states have call predecessors, (55), 1 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-23 14:14:54,577 INFO L276 IsEmpty]: Start isEmpty. Operand 17549 states and 25168 transitions. [2022-11-23 14:14:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-23 14:14:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:54,594 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:14:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:14:54,594 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:14:54,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash 238195636, now seen corresponding path program 1 times [2022-11-23 14:14:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:54,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498380697] [2022-11-23 14:14:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7963 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-23 14:14:56,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:56,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498380697] [2022-11-23 14:14:56,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498380697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:56,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:56,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:14:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913610929] [2022-11-23 14:14:56,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:14:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:14:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:14:56,630 INFO L87 Difference]: Start difference. First operand 17549 states and 25168 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 14:14:59,794 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 [] [2022-11-23 14:15:02,031 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 [] [2022-11-23 14:15:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:03,896 INFO L93 Difference]: Finished difference Result 18793 states and 26873 transitions. [2022-11-23 14:15:03,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:15:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) Word has length 515 [2022-11-23 14:15:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:03,998 INFO L225 Difference]: With dead ends: 18793 [2022-11-23 14:15:03,998 INFO L226 Difference]: Without dead ends: 18791 [2022-11-23 14:15:04,008 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 [2022-11-23 14:15:04,009 INFO L413 NwaCegarLoop]: 4148 mSDtfsCounter, 3359 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 14216 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 14216 Invalid, 1513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1510 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 14:15:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18791 states. [2022-11-23 14:15:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18791 to 18784. [2022-11-23 14:15:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18784 states, 11260 states have (on average 1.2968916518650089) internal successors, (14603), 11643 states have internal predecessors, (14603), 6099 states have call successors, (6099), 1424 states have call predecessors, (6099), 1422 states have return successors, (6163), 6020 states have call predecessors, (6163), 6095 states have call successors, (6163) [2022-11-23 14:15:05,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18784 states to 18784 states and 26865 transitions. [2022-11-23 14:15:05,177 INFO L78 Accepts]: Start accepts. Automaton has 18784 states and 26865 transitions. Word has length 515 [2022-11-23 14:15:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:05,251 INFO L495 AbstractCegarLoop]: Abstraction has 18784 states and 26865 transitions. [2022-11-23 14:15:05,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (53), 2 states have call predecessors, (53), 2 states have call successors, (53) [2022-11-23 14:15:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 18784 states and 26865 transitions. [2022-11-23 14:15:05,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2022-11-23 14:15:05,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:05,262 INFO L195 NwaCegarLoop]: trace histogram [48, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:15:05,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:15:05,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:15:05,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:05,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1862050407, now seen corresponding path program 1 times [2022-11-23 14:15:05,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:05,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513239955] [2022-11-23 14:15:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7965 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7963 trivial. 0 not checked. [2022-11-23 14:15:06,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:06,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513239955] [2022-11-23 14:15:06,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513239955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:06,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:06,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:15:06,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744318549] [2022-11-23 14:15:06,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:06,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:15:06,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:06,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:15:06,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:15:06,776 INFO L87 Difference]: Start difference. First operand 18784 states and 26865 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-23 14:15:09,924 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 [] [2022-11-23 14:15:12,121 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 [] [2022-11-23 14:15:13,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:13,798 INFO L93 Difference]: Finished difference Result 18797 states and 26876 transitions. [2022-11-23 14:15:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:15:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 520 [2022-11-23 14:15:13,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:13,882 INFO L225 Difference]: With dead ends: 18797 [2022-11-23 14:15:13,882 INFO L226 Difference]: Without dead ends: 18795 [2022-11-23 14:15:13,893 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 [2022-11-23 14:15:13,894 INFO L413 NwaCegarLoop]: 4151 mSDtfsCounter, 3354 mSDsluCounter, 10068 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3361 SdHoareTripleChecker+Valid, 14219 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:13,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3361 Valid, 14219 Invalid, 1513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1510 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 14:15:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18795 states. [2022-11-23 14:15:15,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18795 to 18788. [2022-11-23 14:15:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 11263 states have (on average 1.2968125721388617) internal successors, (14606), 11646 states have internal predecessors, (14606), 6099 states have call successors, (6099), 1425 states have call predecessors, (6099), 1423 states have return successors, (6163), 6020 states have call predecessors, (6163), 6095 states have call successors, (6163) [2022-11-23 14:15:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 26868 transitions. [2022-11-23 14:15:15,169 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 26868 transitions. Word has length 520 [2022-11-23 14:15:15,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:15,170 INFO L495 AbstractCegarLoop]: Abstraction has 18788 states and 26868 transitions. [2022-11-23 14:15:15,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (56), 3 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-23 14:15:15,171 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 26868 transitions. [2022-11-23 14:15:15,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2022-11-23 14:15:15,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:15,182 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:15:15,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:15:15,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:15:15,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash 657862884, now seen corresponding path program 1 times [2022-11-23 14:15:15,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:15,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590501420] [2022-11-23 14:15:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:15,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8070 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8066 trivial. 0 not checked. [2022-11-23 14:15:16,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590501420] [2022-11-23 14:15:16,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590501420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:16,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:16,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:15:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162016737] [2022-11-23 14:15:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:16,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:15:16,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:15:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:15:16,697 INFO L87 Difference]: Start difference. First operand 18788 states and 26868 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 14:15:19,809 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 [] [2022-11-23 14:15:22,012 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 [] [2022-11-23 14:15:23,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:23,722 INFO L93 Difference]: Finished difference Result 18801 states and 26879 transitions. [2022-11-23 14:15:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:15:23,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 534 [2022-11-23 14:15:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:23,808 INFO L225 Difference]: With dead ends: 18801 [2022-11-23 14:15:23,809 INFO L226 Difference]: Without dead ends: 18799 [2022-11-23 14:15:23,822 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 [2022-11-23 14:15:23,822 INFO L413 NwaCegarLoop]: 4173 mSDtfsCounter, 3353 mSDsluCounter, 10112 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 14285 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:23,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3359 Valid, 14285 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1513 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 14:15:23,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18799 states. [2022-11-23 14:15:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18799 to 18792. [2022-11-23 14:15:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18792 states, 11266 states have (on average 1.2967335345286704) internal successors, (14609), 11649 states have internal predecessors, (14609), 6099 states have call successors, (6099), 1426 states have call predecessors, (6099), 1424 states have return successors, (6163), 6020 states have call predecessors, (6163), 6095 states have call successors, (6163) [2022-11-23 14:15:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18792 states to 18792 states and 26871 transitions. [2022-11-23 14:15:24,902 INFO L78 Accepts]: Start accepts. Automaton has 18792 states and 26871 transitions. Word has length 534 [2022-11-23 14:15:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:24,903 INFO L495 AbstractCegarLoop]: Abstraction has 18792 states and 26871 transitions. [2022-11-23 14:15:24,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2022-11-23 14:15:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 18792 states and 26871 transitions. [2022-11-23 14:15:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2022-11-23 14:15:24,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:24,915 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:15:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:15:24,916 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:15:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -589517335, now seen corresponding path program 1 times [2022-11-23 14:15:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027223967] [2022-11-23 14:15:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8080 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8074 trivial. 0 not checked. [2022-11-23 14:15:26,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:26,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027223967] [2022-11-23 14:15:26,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027223967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:26,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:26,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:15:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507020641] [2022-11-23 14:15:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:26,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:15:26,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:26,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:15:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:15:26,427 INFO L87 Difference]: Start difference. First operand 18792 states and 26871 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-23 14:15:29,457 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 [] [2022-11-23 14:15:31,767 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 [] [2022-11-23 14:15:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:34,218 INFO L93 Difference]: Finished difference Result 34761 states and 49869 transitions. [2022-11-23 14:15:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:15:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 539 [2022-11-23 14:15:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:34,365 INFO L225 Difference]: With dead ends: 34761 [2022-11-23 14:15:34,365 INFO L226 Difference]: Without dead ends: 34757 [2022-11-23 14:15:34,383 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 [2022-11-23 14:15:34,383 INFO L413 NwaCegarLoop]: 4568 mSDtfsCounter, 3396 mSDsluCounter, 12339 mSDsCounter, 0 mSdLazyCounter, 1707 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 16907 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1707 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:34,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 16907 Invalid, 1712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1707 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 14:15:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34757 states. [2022-11-23 14:15:36,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34757 to 34739. [2022-11-23 14:15:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34739 states, 20838 states have (on average 1.2984451482867838) internal successors, (27057), 21543 states have internal predecessors, (27057), 11259 states have call successors, (11259), 2650 states have call predecessors, (11259), 2639 states have return successors, (11533), 11095 states have call predecessors, (11533), 11251 states have call successors, (11533) [2022-11-23 14:15:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34739 states to 34739 states and 49849 transitions. [2022-11-23 14:15:36,888 INFO L78 Accepts]: Start accepts. Automaton has 34739 states and 49849 transitions. Word has length 539 [2022-11-23 14:15:36,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:36,889 INFO L495 AbstractCegarLoop]: Abstraction has 34739 states and 49849 transitions. [2022-11-23 14:15:36,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2022-11-23 14:15:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34739 states and 49849 transitions. [2022-11-23 14:15:36,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-11-23 14:15:36,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:36,905 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:15:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:15:36,906 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:15:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1303558473, now seen corresponding path program 1 times [2022-11-23 14:15:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878651549] [2022-11-23 14:15:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:38,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8095 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8087 trivial. 0 not checked. [2022-11-23 14:15:38,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:38,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878651549] [2022-11-23 14:15:38,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878651549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:38,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:38,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:15:38,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052912226] [2022-11-23 14:15:38,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:38,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:15:38,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:15:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:15:38,596 INFO L87 Difference]: Start difference. First operand 34739 states and 49849 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-23 14:15:41,688 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 [] [2022-11-23 14:15:45,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:47,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:51,779 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 [] [2022-11-23 14:15:53,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:53,451 INFO L93 Difference]: Finished difference Result 63078 states and 91074 transitions. [2022-11-23 14:15:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:15:53,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 545 [2022-11-23 14:15:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:53,733 INFO L225 Difference]: With dead ends: 63078 [2022-11-23 14:15:53,733 INFO L226 Difference]: Without dead ends: 62899 [2022-11-23 14:15:53,768 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 [2022-11-23 14:15:53,770 INFO L413 NwaCegarLoop]: 4482 mSDtfsCounter, 3187 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 16506 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:53,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3187 Valid, 16506 Invalid, 1693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1686 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2022-11-23 14:15:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62899 states. [2022-11-23 14:15:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62899 to 62858. [2022-11-23 14:15:57,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62858 states, 37604 states have (on average 1.2995160089352196) internal successors, (48867), 38944 states have internal predecessors, (48867), 20385 states have call successors, (20385), 4935 states have call predecessors, (20385), 4866 states have return successors, (21482), 19977 states have call predecessors, (21482), 20373 states have call successors, (21482) [2022-11-23 14:15:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62858 states to 62858 states and 90734 transitions. [2022-11-23 14:15:58,222 INFO L78 Accepts]: Start accepts. Automaton has 62858 states and 90734 transitions. Word has length 545 [2022-11-23 14:15:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:58,223 INFO L495 AbstractCegarLoop]: Abstraction has 62858 states and 90734 transitions. [2022-11-23 14:15:58,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2022-11-23 14:15:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 62858 states and 90734 transitions. [2022-11-23 14:15:58,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-11-23 14:15:58,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:58,241 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:15:58,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:15:58,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:15:58,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:58,242 INFO L85 PathProgramCache]: Analyzing trace with hash 603319390, now seen corresponding path program 1 times [2022-11-23 14:15:58,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:58,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491318001] [2022-11-23 14:15:58,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:58,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8076 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8073 trivial. 0 not checked. [2022-11-23 14:15:59,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:59,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491318001] [2022-11-23 14:15:59,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491318001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:59,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:59,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:15:59,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064127008] [2022-11-23 14:15:59,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:59,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:15:59,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:59,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:15:59,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:15:59,180 INFO L87 Difference]: Start difference. First operand 62858 states and 90734 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-23 14:16:02,447 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 [] [2022-11-23 14:16:05,446 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 [] [2022-11-23 14:16:10,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:10,083 INFO L93 Difference]: Finished difference Result 150882 states and 217993 transitions. [2022-11-23 14:16:10,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:16:10,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 554 [2022-11-23 14:16:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:10,784 INFO L225 Difference]: With dead ends: 150882 [2022-11-23 14:16:10,784 INFO L226 Difference]: Without dead ends: 90416 [2022-11-23 14:16:10,961 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 [2022-11-23 14:16:10,962 INFO L413 NwaCegarLoop]: 6086 mSDtfsCounter, 3036 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3038 SdHoareTripleChecker+Valid, 9412 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:10,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3038 Valid, 9412 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1164 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-23 14:16:11,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90416 states. [2022-11-23 14:16:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90416 to 90337. [2022-11-23 14:16:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90337 states, 54029 states have (on average 1.2989135464287698) internal successors, (70179), 55984 states have internal predecessors, (70179), 29302 states have call successors, (29302), 7112 states have call predecessors, (29302), 7003 states have return successors, (30908), 28693 states have call predecessors, (30908), 29290 states have call successors, (30908) [2022-11-23 14:16:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90337 states to 90337 states and 130389 transitions. [2022-11-23 14:16:16,437 INFO L78 Accepts]: Start accepts. Automaton has 90337 states and 130389 transitions. Word has length 554 [2022-11-23 14:16:16,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:16,438 INFO L495 AbstractCegarLoop]: Abstraction has 90337 states and 130389 transitions. [2022-11-23 14:16:16,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-23 14:16:16,439 INFO L276 IsEmpty]: Start isEmpty. Operand 90337 states and 130389 transitions. [2022-11-23 14:16:16,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2022-11-23 14:16:16,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:16,457 INFO L195 NwaCegarLoop]: trace histogram [49, 44, 44, 44, 44, 44, 44, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:16:16,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:16:16,458 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_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-23 14:16:16,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 349857359, now seen corresponding path program 1 times [2022-11-23 14:16:16,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:16,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688219874] [2022-11-23 14:16:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:16,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8049 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8046 trivial. 0 not checked. [2022-11-23 14:16:17,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:17,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688219874] [2022-11-23 14:16:17,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688219874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:16:17,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:16:17,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:16:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991274318] [2022-11-23 14:16:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:16:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:16:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:16:17,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:16:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:16:17,403 INFO L87 Difference]: Start difference. First operand 90337 states and 130389 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (66), 2 states have call predecessors, (66), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2022-11-23 14:16:20,983 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 [] [2022-11-23 14:16:23,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:16:25,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []