./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF --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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:41:09,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:41:09,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:41:09,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:41:09,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:41:09,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:41:09,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:41:09,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:41:09,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:41:09,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:41:09,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:41:09,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:41:09,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:41:09,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:41:09,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:41:09,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:41:09,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:41:09,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:41:09,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:41:09,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:41:09,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:41:09,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:41:09,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:41:09,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:41:09,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:41:09,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:41:09,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:41:09,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:41:09,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:41:09,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:41:09,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:41:09,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:41:09,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:41:09,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:41:09,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:41:09,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:41:09,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:41:09,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:41:09,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:41:09,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:41:09,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:41:09,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:41:09,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:41:09,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:41:09,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:41:09,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:41:09,984 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:41:09,984 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:41:09,985 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:41:09,985 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:41:09,985 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:41:09,986 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:41:09,987 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:41:09,987 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:41:09,988 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:41:09,988 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:41:09,988 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:41:09,989 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:41:09,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:41:09,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:41:09,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:41:09,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:41:09,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:41:09,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:41:09,992 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:41:09,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:41:09,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:41:09,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:41:09,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:41:09,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:41:09,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:41:09,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:41:09,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:41:09,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:41:09,997 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:41:09,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:41:09,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:41:09,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:41:09,998 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:41:09,999 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-13 01:41:10,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:41:10,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:41:10,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:41:10,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:41:10,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:41:10,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-13 01:41:10,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/196f87d24/67417ca4df8843598097342808d30c82/FLAGfcdb7f4a6 [2021-11-13 01:41:11,377 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:41:11,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-13 01:41:11,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/196f87d24/67417ca4df8843598097342808d30c82/FLAGfcdb7f4a6 [2021-11-13 01:41:11,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/196f87d24/67417ca4df8843598097342808d30c82 [2021-11-13 01:41:11,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:41:11,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:41:11,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:11,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:41:11,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:41:11,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:11" (1/1) ... [2021-11-13 01:41:11,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b65c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:11, skipping insertion in model container [2021-11-13 01:41:11,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:11" (1/1) ... [2021-11-13 01:41:11,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:41:11,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:41:13,530 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:13,610 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:13,918 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:13,926 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,377 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,507 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,551 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,551 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,587 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,588 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,627 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,627 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,629 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:14,635 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,285 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,293 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,294 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,294 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,295 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,302 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,303 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,310 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,312 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,320 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,328 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,329 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,330 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,332 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,374 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,375 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:15,383 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-13 01:41:16,420 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-13 01:41:16,423 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-13 01:41:16,424 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-13 01:41:16,424 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-13 01:41:16,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:16,465 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:41:16,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51099d35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:16, skipping insertion in model container [2021-11-13 01:41:16,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:16,466 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:41:16,468 INFO L158 Benchmark]: Toolchain (without parser) took 4726.55ms. Allocated memory was 86.0MB in the beginning and 165.7MB in the end (delta: 79.7MB). Free memory was 48.7MB in the beginning and 103.7MB in the end (delta: -55.0MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-11-13 01:41:16,469 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:41:16,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4721.35ms. Allocated memory was 86.0MB in the beginning and 165.7MB in the end (delta: 79.7MB). Free memory was 48.4MB in the beginning and 103.7MB in the end (delta: -55.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-11-13 01:41:16,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory was 65.8MB in the beginning and 65.7MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4721.35ms. Allocated memory was 86.0MB in the beginning and 165.7MB in the end (delta: 79.7MB). Free memory was 48.4MB in the beginning and 103.7MB in the end (delta: -55.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7801]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF --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 d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:41:18,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:41:18,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:41:18,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:41:18,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:41:18,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:41:18,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:41:18,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:41:18,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:41:18,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:41:18,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:41:18,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:41:18,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:41:18,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:41:18,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:41:18,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:41:18,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:41:18,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:41:18,835 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:41:18,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:41:18,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:41:18,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:41:18,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:41:18,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:41:18,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:41:18,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:41:18,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:41:18,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:41:18,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:41:18,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:41:18,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:41:18,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:41:18,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:41:18,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:41:18,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:41:18,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:41:18,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:41:18,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:41:18,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:41:18,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:41:18,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:41:18,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:41:18,924 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:41:18,925 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:41:18,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:41:18,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:41:18,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:41:18,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:41:18,927 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:41:18,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:41:18,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:41:18,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:41:18,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:41:18,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:41:18,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:41:18,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:41:18,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:41:18,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:41:18,932 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:41:18,932 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:41:18,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:41:18,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:41:18,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:41:18,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:41:18,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:41:18,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:41:18,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:41:18,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:41:18,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:41:18,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:41:18,935 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:41:18,935 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:41:18,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:41:18,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:41:18,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:41:18,936 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-13 01:41:19,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:41:19,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:41:19,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:41:19,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:41:19,358 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:41:19,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-13 01:41:19,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/b6cc1e131/92c291c49b0445f9b43d16be137f9787/FLAG57b4d8ced [2021-11-13 01:41:20,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:41:20,568 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-13 01:41:20,640 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/b6cc1e131/92c291c49b0445f9b43d16be137f9787/FLAG57b4d8ced [2021-11-13 01:41:20,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/data/b6cc1e131/92c291c49b0445f9b43d16be137f9787 [2021-11-13 01:41:20,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:41:20,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:41:20,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:20,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:41:20,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:41:20,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:20" (1/1) ... [2021-11-13 01:41:20,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b59a253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:20, skipping insertion in model container [2021-11-13 01:41:20,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:41:20" (1/1) ... [2021-11-13 01:41:20,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:41:21,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:41:25,305 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-13 01:41:25,308 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-13 01:41:25,309 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-13 01:41:25,309 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-13 01:41:25,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:25,399 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:41:25,563 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:41:25,958 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-13 01:41:25,959 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-13 01:41:25,959 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-13 01:41:25,960 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-13 01:41:25,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:26,000 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:41:26,740 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462737,462750] [2021-11-13 01:41:26,741 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[462906,462919] [2021-11-13 01:41:26,741 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463073,463086] [2021-11-13 01:41:26,761 WARN L228 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_864e1c7e-2a5d-4545-8db2-440c5ba90b17/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i[463241,463254] [2021-11-13 01:41:26,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:41:27,079 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:41:27,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27 WrapperNode [2021-11-13 01:41:27,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:41:27,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:41:27,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:41:27,086 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:41:27,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,223 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:41:27,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:41:27,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:41:27,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:41:27,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:41:27,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:41:27,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:41:27,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:41:27,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (1/1) ... [2021-11-13 01:41:27,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:41:27,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:41:27,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:41:27,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:41:27,986 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2021-11-13 01:41:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2021-11-13 01:41:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 01:41:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2021-11-13 01:41:27,987 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2021-11-13 01:41:27,987 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2021-11-13 01:41:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2021-11-13 01:41:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2021-11-13 01:41:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2021-11-13 01:41:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 01:41:27,988 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 01:41:27,988 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-13 01:41:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-13 01:41:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 01:41:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 01:41:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-13 01:41:27,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-13 01:41:27,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:41:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-13 01:41:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2021-11-13 01:41:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2021-11-13 01:41:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2021-11-13 01:41:27,990 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2021-11-13 01:41:27,990 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 01:41:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 01:41:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2021-11-13 01:41:27,991 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2021-11-13 01:41:27,991 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-13 01:41:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-13 01:41:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2021-11-13 01:41:27,992 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2021-11-13 01:41:27,992 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-13 01:41:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-13 01:41:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2021-11-13 01:41:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2021-11-13 01:41:27,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-13 01:41:27,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-13 01:41:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2021-11-13 01:41:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2021-11-13 01:41:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-13 01:41:27,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 01:41:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 01:41:27,995 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2021-11-13 01:41:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2021-11-13 01:41:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:41:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:41:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2021-11-13 01:41:27,997 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2021-11-13 01:41:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:41:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:41:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 01:41:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 01:41:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2021-11-13 01:41:27,998 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2021-11-13 01:41:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 01:41:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 01:41:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2021-11-13 01:41:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2021-11-13 01:41:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2021-11-13 01:41:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2021-11-13 01:41:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-13 01:41:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-13 01:41:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2021-11-13 01:41:28,001 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2021-11-13 01:41:28,001 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2021-11-13 01:41:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2021-11-13 01:41:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2021-11-13 01:41:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2021-11-13 01:41:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-13 01:41:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-13 01:41:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2021-11-13 01:41:28,002 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2021-11-13 01:41:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 01:41:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 01:41:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2021-11-13 01:41:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2021-11-13 01:41:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-13 01:41:28,004 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-13 01:41:28,004 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-13 01:41:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-13 01:41:28,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:41:28,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-13 01:41:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2021-11-13 01:41:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2021-11-13 01:41:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:41:28,006 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-13 01:41:28,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-13 01:41:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-13 01:41:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-13 01:41:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2021-11-13 01:41:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2021-11-13 01:41:28,007 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-13 01:41:28,007 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-13 01:41:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-13 01:41:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-13 01:41:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2021-11-13 01:41:28,008 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2021-11-13 01:41:28,008 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-13 01:41:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-13 01:41:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 01:41:28,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 01:41:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:41:28,009 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2021-11-13 01:41:28,010 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2021-11-13 01:41:28,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-13 01:41:28,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-13 01:41:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2021-11-13 01:41:28,015 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2021-11-13 01:41:28,015 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:41:28,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 01:41:28,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-13 01:41:28,017 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2021-11-13 01:41:28,017 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2021-11-13 01:41:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80___0 [2021-11-13 01:41:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80___0 [2021-11-13 01:41:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-13 01:41:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-13 01:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 01:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 01:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2021-11-13 01:41:28,024 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2021-11-13 01:41:28,024 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2021-11-13 01:41:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2021-11-13 01:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 01:41:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 01:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-13 01:41:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2021-11-13 01:41:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2021-11-13 01:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:41:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 01:41:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 01:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:41:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 01:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-13 01:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 01:41:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 01:41:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2021-11-13 01:41:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2021-11-13 01:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:41:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-13 01:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2021-11-13 01:41:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2021-11-13 01:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2021-11-13 01:41:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2021-11-13 01:41:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-13 01:41:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-13 01:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2021-11-13 01:41:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2021-11-13 01:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2021-11-13 01:41:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2021-11-13 01:41:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2021-11-13 01:41:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2021-11-13 01:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2021-11-13 01:41:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2021-11-13 01:41:28,030 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2021-11-13 01:41:28,030 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2021-11-13 01:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2021-11-13 01:41:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2021-11-13 01:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2021-11-13 01:41:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2021-11-13 01:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-13 01:41:28,031 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-13 01:41:28,031 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-13 01:41:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-13 01:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2021-11-13 01:41:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2021-11-13 01:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2021-11-13 01:41:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2021-11-13 01:41:28,032 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2021-11-13 01:41:28,032 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2021-11-13 01:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-13 01:41:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-13 01:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-13 01:41:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-13 01:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2021-11-13 01:41:28,033 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2021-11-13 01:41:28,033 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2021-11-13 01:41:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2021-11-13 01:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-13 01:41:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-13 01:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-13 01:41:28,034 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-13 01:41:28,034 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2021-11-13 01:41:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2021-11-13 01:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2021-11-13 01:41:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2021-11-13 01:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2021-11-13 01:41:28,035 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2021-11-13 01:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:41:28,035 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2021-11-13 01:41:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2021-11-13 01:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-13 01:41:28,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-13 01:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-13 01:41:28,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2021-11-13 01:41:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2021-11-13 01:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-13 01:41:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-13 01:41:28,037 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-13 01:41:28,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-13 01:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-13 01:41:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-13 01:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2021-11-13 01:41:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2021-11-13 01:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-13 01:41:28,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-13 01:41:28,038 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-13 01:41:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-13 01:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 01:41:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 01:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-13 01:41:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-13 01:41:28,039 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2021-11-13 01:41:28,039 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2021-11-13 01:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-13 01:41:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-13 01:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2021-11-13 01:41:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2021-11-13 01:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2021-11-13 01:41:28,040 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2021-11-13 01:41:28,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-13 01:41:28,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-13 01:41:28,042 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2021-11-13 01:41:28,045 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2021-11-13 01:41:28,045 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 01:41:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 01:41:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 01:41:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 01:41:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-13 01:41:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-13 01:41:28,046 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2021-11-13 01:41:28,046 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2021-11-13 01:41:28,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-13 01:41:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-13 01:41:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-13 01:41:28,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2021-11-13 01:41:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2021-11-13 01:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 01:41:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 01:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-13 01:41:28,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-13 01:41:28,050 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2021-11-13 01:41:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2021-11-13 01:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 01:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 01:41:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 01:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-13 01:41:28,051 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-13 01:41:28,051 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2021-11-13 01:41:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2021-11-13 01:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-13 01:41:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-13 01:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2021-11-13 01:41:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2021-11-13 01:41:28,052 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 01:41:28,052 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 01:41:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-13 01:41:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-13 01:41:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-13 01:41:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-13 01:41:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2021-11-13 01:41:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2021-11-13 01:41:28,053 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2021-11-13 01:41:28,053 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2021-11-13 01:41:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 01:41:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-13 01:41:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2021-11-13 01:41:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2021-11-13 01:41:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-13 01:41:28,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-13 01:41:28,054 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2021-11-13 01:41:28,055 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2021-11-13 01:41:30,793 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 01:41:53,718 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-13 01:41:53,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:41:53,968 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:41:53,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:53 BoogieIcfgContainer [2021-11-13 01:41:53,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:41:53,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:41:53,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:41:53,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:41:53,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:41:20" (1/3) ... [2021-11-13 01:41:53,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b2818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:53, skipping insertion in model container [2021-11-13 01:41:53,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:41:27" (2/3) ... [2021-11-13 01:41:53,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b2818b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:41:53, skipping insertion in model container [2021-11-13 01:41:53,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:41:53" (3/3) ... [2021-11-13 01:41:53,994 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-13 01:41:54,004 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:41:54,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-13 01:41:54,080 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:41:54,093 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:41:54,094 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-13 01:41:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 2153 states, 1431 states have (on average 1.2858141160027952) internal successors, (1840), 1482 states have internal predecessors, (1840), 594 states have call successors, (594), 125 states have call predecessors, (594), 124 states have return successors, (588), 565 states have call predecessors, (588), 588 states have call successors, (588) [2021-11-13 01:41:54,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-13 01:41:54,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:54,210 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:54,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:41:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:54,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1074380420, now seen corresponding path program 1 times [2021-11-13 01:41:54,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:54,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950368674] [2021-11-13 01:41:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:54,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:54,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:54,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:54,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:41:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:57,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:41:57,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:58,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:41:58,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:59,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:41:59,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:59,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950368674] [2021-11-13 01:41:59,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950368674] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:41:59,122 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:41:59,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:41:59,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135030650] [2021-11-13 01:41:59,125 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:59,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:41:59,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:59,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:41:59,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:41:59,169 INFO L87 Difference]: Start difference. First operand has 2153 states, 1431 states have (on average 1.2858141160027952) internal successors, (1840), 1482 states have internal predecessors, (1840), 594 states have call successors, (594), 125 states have call predecessors, (594), 124 states have return successors, (588), 565 states have call predecessors, (588), 588 states have call successors, (588) Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-13 01:42:01,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:08,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:08,146 INFO L93 Difference]: Finished difference Result 8228 states and 11770 transitions. [2021-11-13 01:42:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:08,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 398 [2021-11-13 01:42:08,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:08,254 INFO L225 Difference]: With dead ends: 8228 [2021-11-13 01:42:08,255 INFO L226 Difference]: Without dead ends: 6128 [2021-11-13 01:42:08,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:08,287 INFO L933 BasicCegarLoop]: 4070 mSDtfsCounter, 5654 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7575.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5654 SdHoareTripleChecker+Valid, 9417 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 78.77ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8288.57ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:08,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5654 Valid, 9417 Invalid, 1166 Unknown, 0 Unchecked, 78.77ms Time], IncrementalHoareTripleChecker [18 Valid, 1147 Invalid, 1 Unknown, 0 Unchecked, 8288.57ms Time] [2021-11-13 01:42:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-11-13 01:42:08,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6093. [2021-11-13 01:42:08,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6093 states, 4093 states have (on average 1.2843879794771562) internal successors, (5257), 4240 states have internal predecessors, (5257), 1632 states have call successors, (1632), 365 states have call predecessors, (1632), 364 states have return successors, (1628), 1559 states have call predecessors, (1628), 1628 states have call successors, (1628) [2021-11-13 01:42:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8517 transitions. [2021-11-13 01:42:08,800 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8517 transitions. Word has length 398 [2021-11-13 01:42:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:08,804 INFO L470 AbstractCegarLoop]: Abstraction has 6093 states and 8517 transitions. [2021-11-13 01:42:08,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 4 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-13 01:42:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8517 transitions. [2021-11-13 01:42:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-13 01:42:08,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:08,820 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:08,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:09,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:09,038 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:42:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1293159244, now seen corresponding path program 1 times [2021-11-13 01:42:09,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:09,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066988330] [2021-11-13 01:42:09,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:09,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:09,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:09,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:09,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:42:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:11,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:11,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:12,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:42:12,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:13,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:42:13,736 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:13,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066988330] [2021-11-13 01:42:13,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066988330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:13,737 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:13,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:42:13,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727384759] [2021-11-13 01:42:13,737 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:13,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:42:13,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:42:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:13,743 INFO L87 Difference]: Start difference. First operand 6093 states and 8517 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:42:15,914 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:24,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:24,659 INFO L93 Difference]: Finished difference Result 16106 states and 22461 transitions. [2021-11-13 01:42:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:24,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 406 [2021-11-13 01:42:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:24,754 INFO L225 Difference]: With dead ends: 16106 [2021-11-13 01:42:24,755 INFO L226 Difference]: Without dead ends: 10086 [2021-11-13 01:42:24,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 808 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:24,791 INFO L933 BasicCegarLoop]: 4055 mSDtfsCounter, 7471 mSDsluCounter, 4587 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 1093 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9046.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7471 SdHoareTripleChecker+Valid, 8642 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.51ms SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10223.55ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:24,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7471 Valid, 8642 Invalid, 2305 Unknown, 0 Unchecked, 53.51ms Time], IncrementalHoareTripleChecker [1093 Valid, 1211 Invalid, 1 Unknown, 0 Unchecked, 10223.55ms Time] [2021-11-13 01:42:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10086 states. [2021-11-13 01:42:25,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10086 to 10000. [2021-11-13 01:42:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10000 states, 6746 states have (on average 1.283278980136377) internal successors, (8657), 6993 states have internal predecessors, (8657), 2636 states have call successors, (2636), 615 states have call predecessors, (2636), 614 states have return successors, (2632), 2511 states have call predecessors, (2632), 2632 states have call successors, (2632) [2021-11-13 01:42:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10000 states to 10000 states and 13925 transitions. [2021-11-13 01:42:25,427 INFO L78 Accepts]: Start accepts. Automaton has 10000 states and 13925 transitions. Word has length 406 [2021-11-13 01:42:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:25,431 INFO L470 AbstractCegarLoop]: Abstraction has 10000 states and 13925 transitions. [2021-11-13 01:42:25,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 4 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-13 01:42:25,432 INFO L276 IsEmpty]: Start isEmpty. Operand 10000 states and 13925 transitions. [2021-11-13 01:42:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-13 01:42:25,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:25,443 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:25,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:25,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:25,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:42:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -550548833, now seen corresponding path program 1 times [2021-11-13 01:42:25,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:25,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258589857] [2021-11-13 01:42:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:25,668 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:25,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:25,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:25,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:42:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:28,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:28,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:42:29,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:42:30,185 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:30,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258589857] [2021-11-13 01:42:30,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258589857] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:30,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:30,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:42:30,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168654632] [2021-11-13 01:42:30,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:30,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:42:30,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:30,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:42:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:42:30,188 INFO L87 Difference]: Start difference. First operand 10000 states and 13925 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:42:32,357 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:33,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:33,234 INFO L93 Difference]: Finished difference Result 27444 states and 38198 transitions. [2021-11-13 01:42:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:42:33,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 407 [2021-11-13 01:42:33,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:33,387 INFO L225 Difference]: With dead ends: 27444 [2021-11-13 01:42:33,387 INFO L226 Difference]: Without dead ends: 17538 [2021-11-13 01:42:33,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:42:33,600 INFO L933 BasicCegarLoop]: 3531 mSDtfsCounter, 2735 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2350.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.97ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2418.17ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:33,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 6449 Invalid, 76 Unknown, 0 Unchecked, 18.97ms Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2418.17ms Time] [2021-11-13 01:42:33,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17538 states. [2021-11-13 01:42:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17538 to 17488. [2021-11-13 01:42:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17488 states, 11775 states have (on average 1.2829723991507431) internal successors, (15107), 12223 states have internal predecessors, (15107), 4606 states have call successors, (4606), 1104 states have call predecessors, (4606), 1103 states have return successors, (4602), 4376 states have call predecessors, (4602), 4602 states have call successors, (4602) [2021-11-13 01:42:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17488 states to 17488 states and 24315 transitions. [2021-11-13 01:42:34,618 INFO L78 Accepts]: Start accepts. Automaton has 17488 states and 24315 transitions. Word has length 407 [2021-11-13 01:42:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:34,619 INFO L470 AbstractCegarLoop]: Abstraction has 17488 states and 24315 transitions. [2021-11-13 01:42:34,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:42:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 17488 states and 24315 transitions. [2021-11-13 01:42:34,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-13 01:42:34,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:34,631 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:34,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:34,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:34,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:42:34,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:34,853 INFO L85 PathProgramCache]: Analyzing trace with hash 541007103, now seen corresponding path program 1 times [2021-11-13 01:42:34,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:34,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959779986] [2021-11-13 01:42:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:34,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:34,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:34,859 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:34,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:42:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:37,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:37,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:42:38,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:42:39,387 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:39,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959779986] [2021-11-13 01:42:39,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959779986] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:39,387 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:39,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:42:39,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243616329] [2021-11-13 01:42:39,388 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:39,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:42:39,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:39,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:42:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:42:39,391 INFO L87 Difference]: Start difference. First operand 17488 states and 24315 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:42:41,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:42,952 INFO L93 Difference]: Finished difference Result 44840 states and 62071 transitions. [2021-11-13 01:42:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:42:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 408 [2021-11-13 01:42:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:43,092 INFO L225 Difference]: With dead ends: 44840 [2021-11-13 01:42:43,092 INFO L226 Difference]: Without dead ends: 27446 [2021-11-13 01:42:43,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:42:43,170 INFO L933 BasicCegarLoop]: 4769 mSDtfsCounter, 2735 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2349.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7688 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.79ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2415.40ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:43,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7688 Invalid, 76 Unknown, 0 Unchecked, 23.79ms Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 1 Unknown, 0 Unchecked, 2415.40ms Time] [2021-11-13 01:42:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27446 states. [2021-11-13 01:42:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27446 to 27390. [2021-11-13 01:42:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27390 states, 18324 states have (on average 1.2766863130320891) internal successors, (23394), 19089 states have internal predecessors, (23394), 7191 states have call successors, (7191), 1872 states have call predecessors, (7191), 1871 states have return successors, (7187), 6756 states have call predecessors, (7187), 7187 states have call successors, (7187) [2021-11-13 01:42:44,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27390 states to 27390 states and 37772 transitions. [2021-11-13 01:42:44,883 INFO L78 Accepts]: Start accepts. Automaton has 27390 states and 37772 transitions. Word has length 408 [2021-11-13 01:42:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:42:44,886 INFO L470 AbstractCegarLoop]: Abstraction has 27390 states and 37772 transitions. [2021-11-13 01:42:44,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-13 01:42:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 27390 states and 37772 transitions. [2021-11-13 01:42:44,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-13 01:42:44,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:42:44,896 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:42:44,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:42:45,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:42:45,121 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:42:45,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:42:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1189298755, now seen corresponding path program 1 times [2021-11-13 01:42:45,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:42:45,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463499271] [2021-11-13 01:42:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:42:45,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:42:45,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:42:45,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:42:45,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:42:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:42:47,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:42:47,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:42:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:42:48,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:42:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:42:49,570 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:42:49,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463499271] [2021-11-13 01:42:49,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463499271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:42:49,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:42:49,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:42:49,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961648883] [2021-11-13 01:42:49,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:42:49,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:42:49,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:42:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:42:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:49,574 INFO L87 Difference]: Start difference. First operand 27390 states and 37772 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-13 01:42:51,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:42:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:42:58,923 INFO L93 Difference]: Finished difference Result 93596 states and 128967 transitions. [2021-11-13 01:42:58,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:42:58,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 412 [2021-11-13 01:42:58,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:42:59,455 INFO L225 Difference]: With dead ends: 93596 [2021-11-13 01:42:59,456 INFO L226 Difference]: Without dead ends: 66300 [2021-11-13 01:42:59,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:42:59,553 INFO L933 BasicCegarLoop]: 4104 mSDtfsCounter, 5649 mSDsluCounter, 5314 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6395.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5649 SdHoareTripleChecker+Valid, 9418 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.85ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7016.70ms IncrementalHoareTripleChecker+Time [2021-11-13 01:42:59,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5649 Valid, 9418 Invalid, 1169 Unknown, 0 Unchecked, 34.85ms Time], IncrementalHoareTripleChecker [23 Valid, 1145 Invalid, 1 Unknown, 0 Unchecked, 7016.70ms Time] [2021-11-13 01:42:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66300 states. [2021-11-13 01:43:03,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66300 to 66194. [2021-11-13 01:43:03,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66194 states, 44414 states have (on average 1.276421848966542) internal successors, (56691), 46313 states have internal predecessors, (56691), 17205 states have call successors, (17205), 4572 states have call predecessors, (17205), 4571 states have return successors, (17201), 16116 states have call predecessors, (17201), 17201 states have call successors, (17201) [2021-11-13 01:43:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66194 states to 66194 states and 91097 transitions. [2021-11-13 01:43:03,875 INFO L78 Accepts]: Start accepts. Automaton has 66194 states and 91097 transitions. Word has length 412 [2021-11-13 01:43:03,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:03,876 INFO L470 AbstractCegarLoop]: Abstraction has 66194 states and 91097 transitions. [2021-11-13 01:43:03,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 4 states have call successors, (44), 3 states have call predecessors, (44), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-13 01:43:03,877 INFO L276 IsEmpty]: Start isEmpty. Operand 66194 states and 91097 transitions. [2021-11-13 01:43:03,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-13 01:43:03,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:03,886 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:43:03,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:04,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:04,110 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:43:04,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1220416002, now seen corresponding path program 1 times [2021-11-13 01:43:04,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:04,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145023106] [2021-11-13 01:43:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:04,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:04,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:04,116 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:04,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:43:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:07,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:43:07,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:07,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-13 01:43:07,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:08,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-13 01:43:08,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:08,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145023106] [2021-11-13 01:43:08,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145023106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:08,675 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:08,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:43:08,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181217555] [2021-11-13 01:43:08,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:08,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:43:08,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:43:08,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:43:08,677 INFO L87 Difference]: Start difference. First operand 66194 states and 91097 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-13 01:43:10,886 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:43:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:43:22,828 INFO L93 Difference]: Finished difference Result 237149 states and 326059 transitions. [2021-11-13 01:43:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 01:43:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 418 [2021-11-13 01:43:22,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:43:24,021 INFO L225 Difference]: With dead ends: 237149 [2021-11-13 01:43:24,021 INFO L226 Difference]: Without dead ends: 171049 [2021-11-13 01:43:24,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:43:24,609 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 5752 mSDsluCounter, 5150 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6537.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5752 SdHoareTripleChecker+Valid, 9675 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.85ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7282.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:43:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5752 Valid, 9675 Invalid, 1238 Unknown, 0 Unchecked, 29.85ms Time], IncrementalHoareTripleChecker [24 Valid, 1213 Invalid, 1 Unknown, 0 Unchecked, 7282.99ms Time] [2021-11-13 01:43:24,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171049 states. [2021-11-13 01:43:32,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171049 to 170959. [2021-11-13 01:43:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170959 states, 115476 states have (on average 1.275122103294191) internal successors, (147246), 120042 states have internal predecessors, (147246), 43747 states have call successors, (43747), 11733 states have call predecessors, (43747), 11732 states have return successors, (43743), 41293 states have call predecessors, (43743), 43743 states have call successors, (43743) [2021-11-13 01:43:34,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170959 states to 170959 states and 234736 transitions. [2021-11-13 01:43:34,766 INFO L78 Accepts]: Start accepts. Automaton has 170959 states and 234736 transitions. Word has length 418 [2021-11-13 01:43:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:43:34,768 INFO L470 AbstractCegarLoop]: Abstraction has 170959 states and 234736 transitions. [2021-11-13 01:43:34,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 4 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-13 01:43:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 170959 states and 234736 transitions. [2021-11-13 01:43:34,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-13 01:43:34,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:43:34,773 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 34, 34, 34, 34, 34, 34, 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] [2021-11-13 01:43:34,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:43:34,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:43:34,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_tryErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-13 01:43:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:43:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1780948959, now seen corresponding path program 1 times [2021-11-13 01:43:34,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:43:35,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729394666] [2021-11-13 01:43:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:43:35,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:43:35,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:43:35,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:43:35,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_864e1c7e-2a5d-4545-8db2-440c5ba90b17/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:43:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:43:37,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1823 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:43:37,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:43:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2021-11-13 01:43:38,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:43:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5364 trivial. 0 not checked. [2021-11-13 01:43:38,953 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:43:38,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729394666] [2021-11-13 01:43:38,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729394666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:43:38,953 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:43:38,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 01:43:38,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402788914] [2021-11-13 01:43:38,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:43:38,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 01:43:38,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:43:38,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 01:43:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 01:43:38,955 INFO L87 Difference]: Start difference. First operand 170959 states and 234736 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 4 states have call successors, (45), 3 states have call predecessors, (45), 3 states have return successors, (43), 4 states have call predecessors, (43), 4 states have call successors, (43) [2021-11-13 01:43:41,129 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []