./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 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/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_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:27:56,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:27:56,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:27:57,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:27:57,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:27:57,043 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:27:57,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:27:57,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:27:57,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:27:57,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:27:57,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:27:57,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:27:57,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:27:57,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:27:57,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:27:57,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:27:57,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:27:57,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:27:57,091 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:27:57,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:27:57,096 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:27:57,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:27:57,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:27:57,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:27:57,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:27:57,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:27:57,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:27:57,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:27:57,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:27:57,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:27:57,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:27:57,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:27:57,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:27:57,118 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:27:57,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:27:57,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:27:57,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:27:57,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:27:57,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:27:57,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:27:57,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:27:57,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:27:57,157 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:27:57,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:27:57,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:27:57,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:27:57,159 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:27:57,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:27:57,160 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:27:57,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:27:57,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:27:57,161 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:27:57,162 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:27:57,162 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:27:57,162 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:27:57,163 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:27:57,163 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:27:57,164 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:27:57,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:27:57,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:27:57,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:27:57,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:27:57,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:27:57,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:27:57,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:27:57,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:27:57,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:27:57,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:27:57,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:27:57,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:27:57,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:27:57,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:27:57,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:27:57,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:27:57,171 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:27:57,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:27:57,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:27:57,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:27:57,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:27:57,173 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_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-19 14:27:57,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:27:57,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:27:57,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:27:57,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:27:57,575 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:27:57,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-19 14:27:57,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/1797d961a/32874018e2484088bf80d34c9d6a6791/FLAG4692b7103 [2021-11-19 14:27:59,034 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:27:59,035 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-19 14:27:59,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/1797d961a/32874018e2484088bf80d34c9d6a6791/FLAG4692b7103 [2021-11-19 14:27:59,657 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/1797d961a/32874018e2484088bf80d34c9d6a6791 [2021-11-19 14:27:59,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:27:59,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:27:59,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:27:59,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:27:59,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:27:59,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:27:59" (1/1) ... [2021-11-19 14:27:59,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fdf9317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:27:59, skipping insertion in model container [2021-11-19 14:27:59,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:27:59" (1/1) ... [2021-11-19 14:27:59,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:27:59,930 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:01,744 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:01,833 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,172 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,181 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,685 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,808 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,855 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,856 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,857 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,858 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,902 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,903 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,905 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:02,913 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,753 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,754 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,763 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,764 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,765 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,765 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,774 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,775 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,784 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,786 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,796 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,805 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,807 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,808 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,810 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,864 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,866 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:03,876 WARN L571 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-19 14:28:05,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:05,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:05,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:05,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:05,037 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:05,071 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) [2021-11-19 14:28:05,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@474605c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:05, skipping insertion in model container [2021-11-19 14:28:05,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:05,073 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:28:05,075 INFO L158 Benchmark]: Toolchain (without parser) took 5410.76ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 67.5MB in the beginning and 75.2MB in the end (delta: -7.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2021-11-19 14:28:05,076 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:28:05,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5404.85ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 67.3MB in the beginning and 75.2MB in the end (delta: -7.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2021-11-19 14:28:05,079 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 88.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5404.85ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 67.3MB in the beginning and 75.2MB in the end (delta: -7.9MB). Peak memory consumption was 39.3MB. 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_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/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_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs --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-0f8a17c [2021-11-19 14:28:07,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:28:07,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:28:07,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:28:07,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:28:07,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:28:07,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:28:07,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:28:07,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:28:07,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:28:07,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:28:07,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:28:07,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:28:07,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:28:07,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:28:07,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:28:07,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:28:07,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:28:07,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:28:07,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:28:07,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:28:08,001 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:28:08,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:28:08,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:28:08,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:28:08,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:28:08,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:28:08,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:28:08,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:28:08,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:28:08,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:28:08,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:28:08,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:28:08,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:28:08,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:28:08,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:28:08,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:28:08,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:28:08,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:28:08,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:28:08,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:28:08,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:28:08,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:28:08,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:28:08,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:28:08,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:28:08,101 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:28:08,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:28:08,102 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:28:08,102 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:28:08,102 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:28:08,103 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:28:08,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:28:08,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:28:08,107 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:28:08,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:28:08,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:28:08,108 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:28:08,108 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:28:08,108 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:28:08,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:28:08,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:28:08,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:28:08,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:28:08,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:28:08,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:28:08,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:08,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:28:08,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:28:08,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:28:08,113 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:28:08,113 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:28:08,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:28:08,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:28:08,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:28:08,114 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_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d291badf6e321259e0b1b1625d2ed48867e61016cda7885a720272c3e12df877 [2021-11-19 14:28:08,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:28:08,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:28:08,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:28:08,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:28:08,684 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:28:08,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-19 14:28:08,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/c253a2d71/5b05977a31eb4a1ebb936275eb8d53fe/FLAGb208e643f [2021-11-19 14:28:10,086 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:28:10,088 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-19 14:28:10,174 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/c253a2d71/5b05977a31eb4a1ebb936275eb8d53fe/FLAGb208e643f [2021-11-19 14:28:10,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/data/c253a2d71/5b05977a31eb4a1ebb936275eb8d53fe [2021-11-19 14:28:10,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:28:10,323 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:28:10,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:10,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:28:10,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:28:10,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:10" (1/1) ... [2021-11-19 14:28:10,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c08f3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:10, skipping insertion in model container [2021-11-19 14:28:10,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:28:10" (1/1) ... [2021-11-19 14:28:10,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:28:10,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:16,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,021 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:16,081 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:28:16,280 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:28:16,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:16,711 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:16,743 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:28:17,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:17,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:17,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:17,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/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] [2021-11-19 14:28:17,421 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:28:17,732 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:28:17,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17 WrapperNode [2021-11-19 14:28:17,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:28:17,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:17,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:28:17,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:28:17,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:17,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,162 INFO L137 Inliner]: procedures = 536, calls = 2018, calls flagged for inlining = 218, calls inlined = 177, statements flattened = 5088 [2021-11-19 14:28:18,163 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:28:18,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:28:18,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:28:18,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:28:18,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:28:18,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:28:18,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:28:18,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:28:18,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (1/1) ... [2021-11-19 14:28:18,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:28:18,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:28:18,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:28:18,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:28:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_ds_info [2021-11-19 14:28:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_ds_info [2021-11-19 14:28:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 14:28:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_prepare [2021-11-19 14:28:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_prepare [2021-11-19 14:28:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_prepare_ds [2021-11-19 14:28:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_prepare_ds [2021-11-19 14:28:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_write [2021-11-19 14:28:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_write [2021-11-19 14:28:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-19 14:28:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-19 14:28:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-19 14:28:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-19 14:28:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-19 14:28:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-19 14:28:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-19 14:28:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-19 14:28:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:28:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-19 14:28:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_init_commit [2021-11-19 14:28:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_init_commit [2021-11-19 14:28:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_init_decode_pages [2021-11-19 14:28:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_init_decode_pages [2021-11-19 14:28:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-19 14:28:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-19 14:28:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_lseg [2021-11-19 14:28:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_lseg [2021-11-19 14:28:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_SERVER [2021-11-19 14:28:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_SERVER [2021-11-19 14:28:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_select_ds_fh [2021-11-19 14:28:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_select_ds_fh [2021-11-19 14:28:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-19 14:28:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-19 14:28:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_LSEG [2021-11-19 14:28:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_LSEG [2021-11-19 14:28:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-19 14:28:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-19 14:28:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_read [2021-11-19 14:28:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_read [2021-11-19 14:28:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-19 14:28:18,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-19 14:28:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-19 14:28:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_j_index [2021-11-19 14:28:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_j_index [2021-11-19 14:28:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:28:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:28:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_count_stats [2021-11-19 14:28:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_count_stats [2021-11-19 14:28:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:28:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:28:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-19 14:28:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-19 14:28:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_get_lseg [2021-11-19 14:28:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_get_lseg [2021-11-19 14:28:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-19 14:28:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-19 14:28:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_pageio_reset_read_mds [2021-11-19 14:28:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_pageio_reset_read_mds [2021-11-19 14:28:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_recover_commit_reqs [2021-11-19 14:28:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_recover_commit_reqs [2021-11-19 14:28:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-19 14:28:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-19 14:28:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_test [2021-11-19 14:28:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_test [2021-11-19 14:28:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_pg_init_write [2021-11-19 14:28:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_pg_init_write [2021-11-19 14:28:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure transfer_commit_list [2021-11-19 14:28:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure transfer_commit_list [2021-11-19 14:28:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_release [2021-11-19 14:28:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_release [2021-11-19 14:28:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_layout_hdr [2021-11-19 14:28:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_layout_hdr [2021-11-19 14:28:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-19 14:28:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-19 14:28:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_find_or_create_ds_client [2021-11-19 14:28:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_find_or_create_ds_client [2021-11-19 14:28:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-19 14:28:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-19 14:28:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure div_u64_rem [2021-11-19 14:28:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure div_u64_rem [2021-11-19 14:28:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:28:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-19 14:28:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_deveiceid_node [2021-11-19 14:28:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_deveiceid_node [2021-11-19 14:28:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:28:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-19 14:28:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-19 14:28:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-19 14:28:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-19 14:28:18,827 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_request_remove_commit_list [2021-11-19 14:28:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_request_remove_commit_list [2021-11-19 14:28:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_commit_done [2021-11-19 14:28:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_commit_done [2021-11-19 14:28:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-19 14:28:18,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-19 14:28:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:28:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_FROM_HDR [2021-11-19 14:28:18,829 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_FROM_HDR [2021-11-19 14:28:18,829 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_inline_decode [2021-11-19 14:28:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_inline_decode [2021-11-19 14:28:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-19 14:28:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-19 14:28:18,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:28:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_layout_hdr [2021-11-19 14:28:18,835 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_layout_hdr [2021-11-19 14:28:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-19 14:28:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-19 14:28:18,835 INFO L130 BoogieDeclarations]: Found specification of procedure req_offset [2021-11-19 14:28:18,836 INFO L138 BoogieDeclarations]: Found implementation of procedure req_offset [2021-11-19 14:28:18,837 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:28:18,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:28:18,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-19 14:28:18,839 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_mark_request_commit [2021-11-19 14:28:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_mark_request_commit [2021-11-19 14:28:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80___0 [2021-11-19 14:28:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80___0 [2021-11-19 14:28:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-19 14:28:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-19 14:28:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-19 14:28:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-19 14:28:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure _filelayout_free_lseg [2021-11-19 14:28:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure _filelayout_free_lseg [2021-11-19 14:28:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_alloc_lseg [2021-11-19 14:28:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_alloc_lseg [2021-11-19 14:28:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-19 14:28:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-19 14:28:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-19 14:28:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_set_rw_stateid [2021-11-19 14:28:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_set_rw_stateid [2021-11-19 14:28:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:28:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:28:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-19 14:28:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-19 14:28:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:28:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:28:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:28:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-19 14:28:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-19 14:28:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:28:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-19 14:28:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-19 14:28:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_count_stats [2021-11-19 14:28:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_count_stats [2021-11-19 14:28:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:28:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-19 14:28:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure FILELAYOUT_DEVID_NODE [2021-11-19 14:28:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure FILELAYOUT_DEVID_NODE [2021-11-19 14:28:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_resend_writes [2021-11-19 14:28:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_resend_writes [2021-11-19 14:28:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 14:28:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock_try [2021-11-19 14:28:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_sequence_done [2021-11-19 14:28:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_sequence_done [2021-11-19 14:28:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_free_deviceid [2021-11-19 14:28:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_free_deviceid [2021-11-19 14:28:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_retry_commit [2021-11-19 14:28:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_retry_commit [2021-11-19 14:28:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_scan_commit_lists [2021-11-19 14:28:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_scan_commit_lists [2021-11-19 14:28:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_fenceme [2021-11-19 14:28:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_fenceme [2021-11-19 14:28:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_commit_pagelist [2021-11-19 14:28:18,854 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_commit_pagelist [2021-11-19 14:28:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_put_lseg [2021-11-19 14:28:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_put_lseg [2021-11-19 14:28:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-19 14:28:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-19 14:28:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure __be32_to_cpup [2021-11-19 14:28:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __be32_to_cpup [2021-11-19 14:28:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_count_stats [2021-11-19 14:28:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_count_stats [2021-11-19 14:28:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_read [2021-11-19 14:28:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_read [2021-11-19 14:28:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_exit [2021-11-19 14:28:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_exit [2021-11-19 14:28:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-19 14:28:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-19 14:28:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2021-11-19 14:28:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2021-11-19 14:28:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure rpc_count_iostats [2021-11-19 14:28:18,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rpc_count_iostats [2021-11-19 14:28:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_clear_request_commit [2021-11-19 14:28:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_clear_request_commit [2021-11-19 14:28:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-19 14:28:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-19 14:28:18,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:28:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-19 14:28:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-19 14:28:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_FILEID [2021-11-19 14:28:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_FILEID [2021-11-19 14:28:18,859 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_calc_ds_index [2021-11-19 14:28:18,859 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_calc_ds_index [2021-11-19 14:28:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_get_dserver_offset [2021-11-19 14:28:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_get_dserver_offset [2021-11-19 14:28:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:28:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_fl_put_deviceid [2021-11-19 14:28:18,860 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_fl_put_deviceid [2021-11-19 14:28:18,860 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-19 14:28:18,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-19 14:28:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:28:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:28:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-19 14:28:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:28:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:28:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_prepare [2021-11-19 14:28:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_prepare [2021-11-19 14:28:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure NFS_I [2021-11-19 14:28:18,862 INFO L138 BoogieDeclarations]: Found implementation of procedure NFS_I [2021-11-19 14:28:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-19 14:28:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-19 14:28:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-19 14:28:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-19 14:28:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_put_client [2021-11-19 14:28:18,863 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_put_client [2021-11-19 14:28:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-19 14:28:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-19 14:28:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_call_done [2021-11-19 14:28:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_call_done [2021-11-19 14:28:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-19 14:28:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-19 14:28:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_release [2021-11-19 14:28:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_release [2021-11-19 14:28:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure nfs41_setup_sequence [2021-11-19 14:28:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs41_setup_sequence [2021-11-19 14:28:18,865 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-19 14:28:18,865 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-19 14:28:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_commitdata_alloc [2021-11-19 14:28:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_commitdata_alloc [2021-11-19 14:28:18,866 INFO L130 BoogieDeclarations]: Found specification of procedure xdr_set_scratch_buffer [2021-11-19 14:28:18,866 INFO L138 BoogieDeclarations]: Found implementation of procedure xdr_set_scratch_buffer [2021-11-19 14:28:18,867 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_79 [2021-11-19 14:28:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_79 [2021-11-19 14:28:18,872 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_pagelist [2021-11-19 14:28:18,872 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_pagelist [2021-11-19 14:28:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-19 14:28:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-19 14:28:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-19 14:28:18,873 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-19 14:28:18,873 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_call_done [2021-11-19 14:28:18,874 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_call_done [2021-11-19 14:28:18,875 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_free_fh_array [2021-11-19 14:28:18,877 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_free_fh_array [2021-11-19 14:28:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-19 14:28:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-19 14:28:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-19 14:28:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:28:18,878 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_pagelist [2021-11-19 14:28:18,878 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_pagelist [2021-11-19 14:28:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-19 14:28:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-19 14:28:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_80 [2021-11-19 14:28:18,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_80 [2021-11-19 14:28:18,879 INFO L130 BoogieDeclarations]: Found specification of procedure nfs_initiate_commit [2021-11-19 14:28:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs_initiate_commit [2021-11-19 14:28:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 14:28:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-19 14:28:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-19 14:28:18,880 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-19 14:28:18,880 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-19 14:28:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_print_deviceid [2021-11-19 14:28:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_print_deviceid [2021-11-19 14:28:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-19 14:28:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-19 14:28:18,881 INFO L130 BoogieDeclarations]: Found specification of procedure pnfs_update_layout [2021-11-19 14:28:18,881 INFO L138 BoogieDeclarations]: Found implementation of procedure pnfs_update_layout [2021-11-19 14:28:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-19 14:28:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-19 14:28:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-19 14:28:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_nfs4filelayout_exit_5_2 [2021-11-19 14:28:18,882 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_read_release [2021-11-19 14:28:18,882 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_read_release [2021-11-19 14:28:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure nfs4_mark_deviceid_unavailable [2021-11-19 14:28:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure nfs4_mark_deviceid_unavailable [2021-11-19 14:28:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_test_devid_unavailable [2021-11-19 14:28:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_test_devid_unavailable [2021-11-19 14:28:18,883 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-19 14:28:18,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-19 14:28:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_write_prepare [2021-11-19 14:28:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_write_prepare [2021-11-19 14:28:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-19 14:28:18,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-19 14:28:18,884 INFO L130 BoogieDeclarations]: Found specification of procedure filelayout_reset_to_mds [2021-11-19 14:28:18,885 INFO L138 BoogieDeclarations]: Found implementation of procedure filelayout_reset_to_mds [2021-11-19 14:28:20,258 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:28:20,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:28:22,097 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-19 14:28:41,710 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-19 14:28:41,968 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:28:41,997 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:28:41,998 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 14:28:42,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:42 BoogieIcfgContainer [2021-11-19 14:28:42,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:28:42,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:28:42,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:28:42,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:28:42,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:28:10" (1/3) ... [2021-11-19 14:28:42,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e2b131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:42, skipping insertion in model container [2021-11-19 14:28:42,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:28:17" (2/3) ... [2021-11-19 14:28:42,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e2b131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:28:42, skipping insertion in model container [2021-11-19 14:28:42,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:28:42" (3/3) ... [2021-11-19 14:28:42,017 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_fs-nfs-nfs_layout_nfsv41_files.cil.i [2021-11-19 14:28:42,025 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:28:42,025 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-19 14:28:42,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:28:42,110 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 [2021-11-19 14:28:42,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 14:28:42,193 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) [2021-11-19 14:28:42,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-19 14:28:42,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:42,231 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] [2021-11-19 14:28:42,232 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)] === [2021-11-19 14:28:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:42,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1074380420, now seen corresponding path program 1 times [2021-11-19 14:28:42,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:42,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262204050] [2021-11-19 14:28:42,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:42,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:42,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:42,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:42,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:28:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:44,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:28:44,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:28:45,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:28:46,677 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:46,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262204050] [2021-11-19 14:28:46,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262204050] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:46,678 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:46,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:28:46,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811256709] [2021-11-19 14:28:46,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:46,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:46,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:46,742 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) [2021-11-19 14:28:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:28:54,747 INFO L93 Difference]: Finished difference Result 8228 states and 11770 transitions. [2021-11-19 14:28:54,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:28:54,750 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 [2021-11-19 14:28:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:28:54,838 INFO L225 Difference]: With dead ends: 8228 [2021-11-19 14:28:54,839 INFO L226 Difference]: Without dead ends: 6128 [2021-11-19 14:28:54,869 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 [2021-11-19 14:28:54,875 INFO L933 BasicCegarLoop]: 4070 mSDtfsCounter, 5757 mSDsluCounter, 5244 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5757 SdHoareTripleChecker+Valid, 9314 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:28:54,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5757 Valid, 9314 Invalid, 1235 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-19 14:28:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2021-11-19 14:28:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6093. [2021-11-19 14:28:55,382 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) [2021-11-19 14:28:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 8517 transitions. [2021-11-19 14:28:55,448 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 8517 transitions. Word has length 398 [2021-11-19 14:28:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:28:55,453 INFO L470 AbstractCegarLoop]: Abstraction has 6093 states and 8517 transitions. [2021-11-19 14:28:55,453 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) [2021-11-19 14:28:55,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 8517 transitions. [2021-11-19 14:28:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-11-19 14:28:55,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:28:55,472 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] [2021-11-19 14:28:55,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:28:55,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:28:55,694 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)] === [2021-11-19 14:28:55,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:28:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1293159244, now seen corresponding path program 1 times [2021-11-19 14:28:55,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:28:55,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [965662618] [2021-11-19 14:28:55,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:28:55,697 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:28:55,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:28:55,703 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:28:55,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:28:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:28:57,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1544 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:28:57,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:28:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:28:58,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:28:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:28:59,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:28:59,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [965662618] [2021-11-19 14:28:59,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [965662618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:28:59,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:28:59,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:28:59,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565395944] [2021-11-19 14:28:59,242 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:28:59,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:28:59,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:28:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:28:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:28:59,247 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) [2021-11-19 14:29:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:08,826 INFO L93 Difference]: Finished difference Result 16085 states and 22439 transitions. [2021-11-19 14:29:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:08,827 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 [2021-11-19 14:29:08,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:08,918 INFO L225 Difference]: With dead ends: 16085 [2021-11-19 14:29:08,918 INFO L226 Difference]: Without dead ends: 10065 [2021-11-19 14:29:08,952 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 [2021-11-19 14:29:08,953 INFO L933 BasicCegarLoop]: 4055 mSDtfsCounter, 7471 mSDsluCounter, 4587 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7471 SdHoareTripleChecker+Valid, 8642 SdHoareTripleChecker+Invalid, 2305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:08,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7471 Valid, 8642 Invalid, 2305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1093 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2021-11-19 14:29:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10065 states. [2021-11-19 14:29:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10065 to 9979. [2021-11-19 14:29:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9979 states, 6733 states have (on average 1.283677409772761) internal successors, (8643), 6980 states have internal predecessors, (8643), 2632 states have call successors, (2632), 611 states have call predecessors, (2632), 610 states have return successors, (2628), 2507 states have call predecessors, (2628), 2628 states have call successors, (2628) [2021-11-19 14:29:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9979 states to 9979 states and 13903 transitions. [2021-11-19 14:29:09,604 INFO L78 Accepts]: Start accepts. Automaton has 9979 states and 13903 transitions. Word has length 406 [2021-11-19 14:29:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:09,607 INFO L470 AbstractCegarLoop]: Abstraction has 9979 states and 13903 transitions. [2021-11-19 14:29:09,608 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) [2021-11-19 14:29:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 9979 states and 13903 transitions. [2021-11-19 14:29:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2021-11-19 14:29:09,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:09,679 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] [2021-11-19 14:29:09,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:09,889 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)] === [2021-11-19 14:29:09,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash -550548833, now seen corresponding path program 1 times [2021-11-19 14:29:09,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:09,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444205324] [2021-11-19 14:29:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:09,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:09,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:09,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:09,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:29:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:10,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:10,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:29:11,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:29:12,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:12,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444205324] [2021-11-19 14:29:12,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444205324] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:12,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:12,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:29:12,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136243136] [2021-11-19 14:29:12,692 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:12,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:29:12,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:12,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:29:12,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:12,694 INFO L87 Difference]: Start difference. First operand 9979 states and 13903 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) [2021-11-19 14:29:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:13,888 INFO L93 Difference]: Finished difference Result 27423 states and 38176 transitions. [2021-11-19 14:29:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:29:13,888 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 [2021-11-19 14:29:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:14,043 INFO L225 Difference]: With dead ends: 27423 [2021-11-19 14:29:14,043 INFO L226 Difference]: Without dead ends: 17517 [2021-11-19 14:29:14,098 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 [2021-11-19 14:29:14,103 INFO L933 BasicCegarLoop]: 3531 mSDtfsCounter, 2735 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:14,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 6449 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:29:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17517 states. [2021-11-19 14:29:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17517 to 17467. [2021-11-19 14:29:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17467 states, 11762 states have (on average 1.2832001360312872) internal successors, (15093), 12210 states have internal predecessors, (15093), 4602 states have call successors, (4602), 1100 states have call predecessors, (4602), 1099 states have return successors, (4598), 4372 states have call predecessors, (4598), 4598 states have call successors, (4598) [2021-11-19 14:29:15,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17467 states to 17467 states and 24293 transitions. [2021-11-19 14:29:15,217 INFO L78 Accepts]: Start accepts. Automaton has 17467 states and 24293 transitions. Word has length 407 [2021-11-19 14:29:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:15,219 INFO L470 AbstractCegarLoop]: Abstraction has 17467 states and 24293 transitions. [2021-11-19 14:29:15,219 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) [2021-11-19 14:29:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 17467 states and 24293 transitions. [2021-11-19 14:29:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-11-19 14:29:15,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:15,233 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] [2021-11-19 14:29:15,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:15,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:15,458 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)] === [2021-11-19 14:29:15,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:15,459 INFO L85 PathProgramCache]: Analyzing trace with hash 541007103, now seen corresponding path program 1 times [2021-11-19 14:29:15,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:15,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873352741] [2021-11-19 14:29:15,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:15,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:15,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:15,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:15,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:29:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:16,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:16,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:29:17,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:29:18,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:18,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873352741] [2021-11-19 14:29:18,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873352741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:18,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:18,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:29:18,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315288274] [2021-11-19 14:29:18,003 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:18,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:29:18,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:18,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:29:18,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:29:18,005 INFO L87 Difference]: Start difference. First operand 17467 states and 24293 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) [2021-11-19 14:29:19,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:19,328 INFO L93 Difference]: Finished difference Result 44819 states and 62049 transitions. [2021-11-19 14:29:19,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:29:19,329 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 [2021-11-19 14:29:19,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:19,471 INFO L225 Difference]: With dead ends: 44819 [2021-11-19 14:29:19,471 INFO L226 Difference]: Without dead ends: 27425 [2021-11-19 14:29:19,550 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 [2021-11-19 14:29:19,552 INFO L933 BasicCegarLoop]: 4769 mSDtfsCounter, 2735 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7688 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:19,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7688 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:29:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27425 states. [2021-11-19 14:29:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27425 to 27369. [2021-11-19 14:29:21,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27369 states, 18311 states have (on average 1.276828136093059) internal successors, (23380), 19076 states have internal predecessors, (23380), 7187 states have call successors, (7187), 1868 states have call predecessors, (7187), 1867 states have return successors, (7183), 6752 states have call predecessors, (7183), 7183 states have call successors, (7183) [2021-11-19 14:29:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27369 states to 27369 states and 37750 transitions. [2021-11-19 14:29:21,293 INFO L78 Accepts]: Start accepts. Automaton has 27369 states and 37750 transitions. Word has length 408 [2021-11-19 14:29:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:21,295 INFO L470 AbstractCegarLoop]: Abstraction has 27369 states and 37750 transitions. [2021-11-19 14:29:21,296 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) [2021-11-19 14:29:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 27369 states and 37750 transitions. [2021-11-19 14:29:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-19 14:29:21,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:21,300 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] [2021-11-19 14:29:21,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:21,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:21,522 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)] === [2021-11-19 14:29:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1189298755, now seen corresponding path program 1 times [2021-11-19 14:29:21,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:21,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045958591] [2021-11-19 14:29:21,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:21,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:21,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:21,526 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:21,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:29:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:22,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1564 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:22,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:29:23,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:29:24,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:24,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045958591] [2021-11-19 14:29:24,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045958591] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:24,048 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:24,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:29:24,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520724724] [2021-11-19 14:29:24,049 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:24,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:24,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:24,051 INFO L87 Difference]: Start difference. First operand 27369 states and 37750 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) [2021-11-19 14:29:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:32,930 INFO L93 Difference]: Finished difference Result 93575 states and 128945 transitions. [2021-11-19 14:29:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:32,931 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 [2021-11-19 14:29:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:33,495 INFO L225 Difference]: With dead ends: 93575 [2021-11-19 14:29:33,495 INFO L226 Difference]: Without dead ends: 66279 [2021-11-19 14:29:33,602 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 [2021-11-19 14:29:33,603 INFO L933 BasicCegarLoop]: 4104 mSDtfsCounter, 7438 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 1077 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7438 SdHoareTripleChecker+Valid, 8688 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1077 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:33,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7438 Valid, 8688 Invalid, 2289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1077 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-19 14:29:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66279 states. [2021-11-19 14:29:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66279 to 66173. [2021-11-19 14:29:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66173 states, 44401 states have (on average 1.276480259453616) internal successors, (56677), 46300 states have internal predecessors, (56677), 17201 states have call successors, (17201), 4568 states have call predecessors, (17201), 4567 states have return successors, (17197), 16112 states have call predecessors, (17197), 17197 states have call successors, (17197) [2021-11-19 14:29:37,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66173 states to 66173 states and 91075 transitions. [2021-11-19 14:29:37,943 INFO L78 Accepts]: Start accepts. Automaton has 66173 states and 91075 transitions. Word has length 412 [2021-11-19 14:29:37,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:29:37,951 INFO L470 AbstractCegarLoop]: Abstraction has 66173 states and 91075 transitions. [2021-11-19 14:29:37,951 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) [2021-11-19 14:29:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand 66173 states and 91075 transitions. [2021-11-19 14:29:37,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-19 14:29:37,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:29:37,966 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] [2021-11-19 14:29:38,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:29:38,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:29:38,167 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)] === [2021-11-19 14:29:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:29:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1220416002, now seen corresponding path program 1 times [2021-11-19 14:29:38,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:29:38,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089042034] [2021-11-19 14:29:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:29:38,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:29:38,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:29:38,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:29:38,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:29:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:29:39,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:29:39,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:29:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 5049 trivial. 0 not checked. [2021-11-19 14:29:40,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:29:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2021-11-19 14:29:41,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:29:41,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089042034] [2021-11-19 14:29:41,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089042034] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:29:41,137 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:29:41,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:29:41,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325391785] [2021-11-19 14:29:41,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:29:41,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:29:41,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:29:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:29:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:29:41,142 INFO L87 Difference]: Start difference. First operand 66173 states and 91075 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) [2021-11-19 14:29:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:29:53,832 INFO L93 Difference]: Finished difference Result 237128 states and 326037 transitions. [2021-11-19 14:29:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:29:53,833 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 [2021-11-19 14:29:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:29:54,737 INFO L225 Difference]: With dead ends: 237128 [2021-11-19 14:29:54,737 INFO L226 Difference]: Without dead ends: 171028 [2021-11-19 14:29:55,007 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 [2021-11-19 14:29:55,009 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 7146 mSDsluCounter, 4581 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 965 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7146 SdHoareTripleChecker+Valid, 9106 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:29:55,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7146 Valid, 9106 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-19 14:29:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171028 states. [2021-11-19 14:30:03,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171028 to 170938. [2021-11-19 14:30:03,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170938 states, 115463 states have (on average 1.275144418558326) internal successors, (147232), 120029 states have internal predecessors, (147232), 43743 states have call successors, (43743), 11729 states have call predecessors, (43743), 11728 states have return successors, (43739), 41289 states have call predecessors, (43739), 43739 states have call successors, (43739) [2021-11-19 14:30:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170938 states to 170938 states and 234714 transitions. [2021-11-19 14:30:04,681 INFO L78 Accepts]: Start accepts. Automaton has 170938 states and 234714 transitions. Word has length 418 [2021-11-19 14:30:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:30:04,683 INFO L470 AbstractCegarLoop]: Abstraction has 170938 states and 234714 transitions. [2021-11-19 14:30:04,683 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) [2021-11-19 14:30:04,683 INFO L276 IsEmpty]: Start isEmpty. Operand 170938 states and 234714 transitions. [2021-11-19 14:30:04,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-19 14:30:04,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:30:04,687 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] [2021-11-19 14:30:04,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:30:04,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:30:04,906 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)] === [2021-11-19 14:30:04,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:30:04,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1780948959, now seen corresponding path program 1 times [2021-11-19 14:30:04,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:30:04,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693625218] [2021-11-19 14:30:04,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:30:04,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:30:04,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:30:04,909 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:30:04,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28d39ae8-a312-4f53-990e-5737fd8c2c82/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:30:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:30:05,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:30:06,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:30:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 5256 trivial. 0 not checked. [2021-11-19 14:30:06,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:30:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5364 trivial. 0 not checked. [2021-11-19 14:30:07,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:30:07,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693625218] [2021-11-19 14:30:07,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693625218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:30:07,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:30:07,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 14:30:07,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861084106] [2021-11-19 14:30:07,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:30:07,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:30:07,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:30:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:30:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 14:30:07,403 INFO L87 Difference]: Start difference. First operand 170938 states and 234714 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)