./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_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:21,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:21,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:21,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:21,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:21,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:21,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:21,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:21,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:21,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:21,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:21,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:21,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:21,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:21,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:21,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:21,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:21,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:21,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:21,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:21,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:21,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:21,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:21,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:21,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:21,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:21,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:21,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:21,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:21,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:21,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:21,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:21,859 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:21,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:21,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:21,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:21,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:21,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:21,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:21,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:21,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:21,869 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:56:21,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:21,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:21,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:21,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:21,912 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:21,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:21,913 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:21,913 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:56:21,916 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:21,917 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:21,917 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:56:21,917 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:56:21,917 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:21,918 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:56:21,918 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:56:21,918 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:56:21,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:21,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:56:21,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:21,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:56:21,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:21,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:56:21,920 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:21,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:56:21,920 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:21,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:56:21,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:21,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:21,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:21,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:21,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:21,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:21,923 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_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2021-11-12 22:56:22,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:22,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:22,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:22,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:22,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:22,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 22:56:22,346 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/9ed47803d/971d8cd047ac4131ac4f30de944c3703/FLAGbbe8015b9 [2021-11-12 22:56:23,414 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:56:23,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 22:56:23,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/9ed47803d/971d8cd047ac4131ac4f30de944c3703/FLAGbbe8015b9 [2021-11-12 22:56:23,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/9ed47803d/971d8cd047ac4131ac4f30de944c3703 [2021-11-12 22:56:23,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:56:23,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:56:23,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:23,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:56:23,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:56:23,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:23" (1/1) ... [2021-11-12 22:56:23,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a010041 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:23, skipping insertion in model container [2021-11-12 22:56:23,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:23" (1/1) ... [2021-11-12 22:56:23,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:56:23,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:25,337 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,401 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,407 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,408 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,422 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,443 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,473 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,606 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,610 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,645 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,652 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,681 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,692 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,890 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,895 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:25,896 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,276 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,288 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,294 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,300 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,306 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,367 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,374 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,380 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,385 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,391 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,397 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,403 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,413 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,495 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,496 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,496 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,496 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,497 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,497 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,497 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,498 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,500 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,506 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,516 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:56:26,958 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-12 22:56:26,960 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-12 22:56:26,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-12 22:56:26,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-12 22:56:26,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:27,026 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) [2021-11-12 22:56:27,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@489c8fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:27, skipping insertion in model container [2021-11-12 22:56:27,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:27,027 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:56:27,029 INFO L158 Benchmark]: Toolchain (without parser) took 3269.22ms. Allocated memory is still 111.1MB. Free memory was 81.2MB in the beginning and 40.6MB in the end (delta: 40.6MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2021-11-12 22:56:27,030 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 57.9MB in the beginning and 57.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:56:27,031 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3266.95ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 40.6MB in the end (delta: 40.1MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2021-11-12 22:56:27,032 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 86.0MB. Free memory was 57.9MB in the beginning and 57.9MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3266.95ms. Allocated memory is still 111.1MB. Free memory was 80.7MB in the beginning and 40.6MB in the end (delta: 40.1MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4965]: 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_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:56:29,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:56:29,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:56:29,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:56:29,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:56:29,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:56:29,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:56:29,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:56:29,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:56:29,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:56:29,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:56:29,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:56:29,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:56:29,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:56:29,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:56:29,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:56:29,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:56:29,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:56:29,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:56:29,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:56:29,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:56:29,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:56:29,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:56:29,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:56:29,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:56:29,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:56:29,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:56:29,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:56:29,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:56:29,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:56:29,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:56:29,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:56:29,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:56:29,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:56:29,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:56:29,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:56:29,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:56:29,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:56:29,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:56:29,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:56:29,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:56:29,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:56:29,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:56:29,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:56:29,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:56:29,509 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:56:29,509 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:56:29,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:56:29,510 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:56:29,510 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:56:29,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:56:29,510 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:56:29,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:56:29,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:56:29,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:56:29,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:56:29,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:56:29,513 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:56:29,514 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:56:29,514 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:56:29,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:56:29,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:56:29,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:56:29,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:56:29,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:56:29,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:56:29,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:29,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:56:29,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:56:29,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:56:29,516 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:56:29,516 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:56:29,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:56:29,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:56:29,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:56:29,517 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_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2021-11-12 22:56:29,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:56:29,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:56:29,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:56:29,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:56:29,923 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:56:29,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 22:56:30,001 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/55fec4d5c/a29b2e5d8335470a9133dc9875241dc7/FLAGa49b841c9 [2021-11-12 22:56:31,002 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:56:31,003 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 22:56:31,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/55fec4d5c/a29b2e5d8335470a9133dc9875241dc7/FLAGa49b841c9 [2021-11-12 22:56:31,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/data/55fec4d5c/a29b2e5d8335470a9133dc9875241dc7 [2021-11-12 22:56:31,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:56:31,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:56:31,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:31,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:56:31,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:56:31,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:31" (1/1) ... [2021-11-12 22:56:31,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a312cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:31, skipping insertion in model container [2021-11-12 22:56:31,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:56:31" (1/1) ... [2021-11-12 22:56:31,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:56:31,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:34,787 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-12 22:56:34,789 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-12 22:56:34,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-12 22:56:34,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-12 22:56:34,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:34,884 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:56:34,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:56:35,349 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-12 22:56:35,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-12 22:56:35,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-12 22:56:35,351 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-12 22:56:35,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:35,416 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:56:35,940 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-12 22:56:35,941 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-12 22:56:35,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-12 22:56:35,942 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-12 22:56:35,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:56:36,314 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:56:36,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36 WrapperNode [2021-11-12 22:56:36,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:56:36,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:36,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:56:36,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:56:36,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:56:36,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:56:36,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:56:36,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:56:36,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:56:36,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:56:36,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:56:36,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:56:36,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (1/1) ... [2021-11-12 22:56:36,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:56:36,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:56:37,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:56:37,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:56:37,058 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 22:56:37,058 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 22:56:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:56:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:56:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-12 22:56:37,059 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-12 22:56:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:56:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:56:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:56:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:56:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 22:56:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 22:56:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-12 22:56:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-12 22:56:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 22:56:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 22:56:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2021-11-12 22:56:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2021-11-12 22:56:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-12 22:56:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-12 22:56:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-12 22:56:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-12 22:56:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:56:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:56:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 22:56:37,063 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 22:56:37,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2021-11-12 22:56:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2021-11-12 22:56:37,064 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-12 22:56:37,064 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-12 22:56:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:56:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:56:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 22:56:37,065 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 22:56:37,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:56:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 22:56:37,066 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 22:56:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:56:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:56:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:56:37,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:56:37,067 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-12 22:56:37,067 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-12 22:56:37,068 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-12 22:56:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-12 22:56:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 22:56:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 22:56:37,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:56:37,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:56:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-12 22:56:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-12 22:56:37,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:56:37,070 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:56:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 22:56:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 22:56:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 22:56:37,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 22:56:37,071 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-12 22:56:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-12 22:56:37,072 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-12 22:56:37,072 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-12 22:56:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-12 22:56:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-12 22:56:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-12 22:56:37,073 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-12 22:56:37,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:56:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:56:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:56:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 22:56:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 22:56:37,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 22:56:37,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 22:56:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-12 22:56:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-12 22:56:37,075 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-12 22:56:37,075 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-12 22:56:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:56:37,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:56:37,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:56:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:56:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:56:37,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:56:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-12 22:56:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-12 22:56:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-12 22:56:37,078 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-12 22:56:37,078 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-12 22:56:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-12 22:56:37,079 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-12 22:56:37,079 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-12 22:56:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 22:56:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 22:56:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 22:56:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 22:56:37,080 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-12 22:56:37,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-12 22:56:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 22:56:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 22:56:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:56:37,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:56:37,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:56:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:56:37,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-12 22:56:37,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-12 22:56:37,083 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 22:56:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 22:56:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-12 22:56:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-12 22:56:37,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:56:37,087 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-12 22:56:37,088 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-12 22:56:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:56:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:56:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:56:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:56:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-12 22:56:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-12 22:56:37,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:56:37,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:56:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-12 22:56:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-12 22:56:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:56:37,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:56:37,098 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-12 22:56:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-12 22:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-12 22:56:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-12 22:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-12 22:56:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-12 22:56:37,099 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-12 22:56:37,099 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-12 22:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-12 22:56:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-12 22:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-12 22:56:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-12 22:56:37,100 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 22:56:37,100 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 22:56:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-12 22:56:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-12 22:56:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 22:56:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 22:56:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:56:37,101 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:56:37,101 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-12 22:56:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-12 22:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-12 22:56:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-12 22:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-12 22:56:37,102 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-12 22:56:37,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-12 22:56:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-12 22:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-12 22:56:37,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-12 22:56:37,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-12 22:56:37,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-12 22:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:56:37,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-12 22:56:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-12 22:56:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-12 22:56:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-12 22:56:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-12 22:56:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-12 22:56:37,105 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-12 22:56:37,105 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-12 22:56:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-12 22:56:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-12 22:56:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-12 22:56:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-12 22:56:37,106 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 22:56:37,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 22:56:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-12 22:56:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-12 22:56:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-12 22:56:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-12 22:56:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:56:37,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:56:37,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 22:56:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 22:56:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-12 22:56:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-12 22:56:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-12 22:56:37,108 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-12 22:56:37,108 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:56:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:56:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:56:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:56:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-12 22:56:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-12 22:56:37,109 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 22:56:37,109 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:56:37,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:56:37,110 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 22:56:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 22:56:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-12 22:56:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-12 22:56:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-12 22:56:37,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-12 22:56:37,111 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-12 22:56:37,112 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-12 22:56:37,112 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-12 22:56:37,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-12 22:56:37,112 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-12 22:56:37,112 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-12 22:56:37,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:56:37,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:56:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-12 22:56:37,113 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-12 22:56:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-12 22:56:37,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-12 22:56:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-12 22:56:37,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-12 22:56:37,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:56:37,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:56:38,400 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:57:09,329 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 22:57:09,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:57:09,446 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:57:09,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:09 BoogieIcfgContainer [2021-11-12 22:57:09,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:57:09,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:57:09,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:57:09,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:57:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:56:31" (1/3) ... [2021-11-12 22:57:09,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:09, skipping insertion in model container [2021-11-12 22:57:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:56:36" (2/3) ... [2021-11-12 22:57:09,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:57:09, skipping insertion in model container [2021-11-12 22:57:09,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:57:09" (3/3) ... [2021-11-12 22:57:09,459 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 22:57:09,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:57:09,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:57:09,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:57:09,531 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 [2021-11-12 22:57:09,532 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:57:09,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 1688 states, 1170 states have (on average 1.3196581196581196) internal successors, (1544), 1186 states have internal predecessors, (1544), 419 states have call successors, (419), 97 states have call predecessors, (419), 96 states have return successors, (412), 409 states have call predecessors, (412), 412 states have call successors, (412) [2021-11-12 22:57:09,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-12 22:57:09,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:09,628 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:09,628 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:09,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:09,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1168528580, now seen corresponding path program 1 times [2021-11-12 22:57:09,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:09,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413867559] [2021-11-12 22:57:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:09,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:09,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:09,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:57:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:12,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 2365 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:12,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-12 22:57:13,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-12 22:57:13,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:13,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413867559] [2021-11-12 22:57:13,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413867559] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:13,783 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:13,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:57:13,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633980233] [2021-11-12 22:57:13,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:13,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:57:13,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:57:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:13,822 INFO L87 Difference]: Start difference. First operand has 1688 states, 1170 states have (on average 1.3196581196581196) internal successors, (1544), 1186 states have internal predecessors, (1544), 419 states have call successors, (419), 97 states have call predecessors, (419), 96 states have return successors, (412), 409 states have call predecessors, (412), 412 states have call successors, (412) Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 22:57:16,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:23,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:23,248 INFO L93 Difference]: Finished difference Result 6270 states and 9183 transitions. [2021-11-12 22:57:23,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:57:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 241 [2021-11-12 22:57:23,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:23,334 INFO L225 Difference]: With dead ends: 6270 [2021-11-12 22:57:23,334 INFO L226 Difference]: Without dead ends: 4606 [2021-11-12 22:57:23,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:23,375 INFO L933 BasicCegarLoop]: 3062 mSDtfsCounter, 5797 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 762 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8117.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5797 SdHoareTripleChecker+Valid, 6565 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 57.40ms SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8894.81ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:23,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5797 Valid, 6565 Invalid, 1604 Unknown, 0 Unchecked, 57.40ms Time], IncrementalHoareTripleChecker [762 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 8894.81ms Time] [2021-11-12 22:57:23,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2021-11-12 22:57:23,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4583. [2021-11-12 22:57:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 3223 states have (on average 1.3276450511945392) internal successors, (4279), 3265 states have internal predecessors, (4279), 1088 states have call successors, (1088), 270 states have call predecessors, (1088), 269 states have return successors, (1084), 1075 states have call predecessors, (1084), 1084 states have call successors, (1084) [2021-11-12 22:57:23,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 6451 transitions. [2021-11-12 22:57:23,835 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 6451 transitions. Word has length 241 [2021-11-12 22:57:23,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:23,840 INFO L470 AbstractCegarLoop]: Abstraction has 4583 states and 6451 transitions. [2021-11-12 22:57:23,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 4 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-11-12 22:57:23,841 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 6451 transitions. [2021-11-12 22:57:23,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-12 22:57:23,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:23,852 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:23,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:24,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:24,074 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:24,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:24,074 INFO L85 PathProgramCache]: Analyzing trace with hash 443268309, now seen corresponding path program 1 times [2021-11-12 22:57:24,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:24,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142658151] [2021-11-12 22:57:24,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:24,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:24,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:24,085 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:24,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:57:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:26,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:26,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:27,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-12 22:57:27,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-11-12 22:57:28,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:28,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142658151] [2021-11-12 22:57:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142658151] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:28,034 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:28,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:57:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672235419] [2021-11-12 22:57:28,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:28,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:57:28,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:28,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:57:28,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:28,039 INFO L87 Difference]: Start difference. First operand 4583 states and 6451 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-12 22:57:30,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:30,770 INFO L93 Difference]: Finished difference Result 8841 states and 12424 transitions. [2021-11-12 22:57:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:30,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 257 [2021-11-12 22:57:30,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:30,811 INFO L225 Difference]: With dead ends: 8841 [2021-11-12 22:57:30,812 INFO L226 Difference]: Without dead ends: 4301 [2021-11-12 22:57:30,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:57:30,839 INFO L933 BasicCegarLoop]: 2218 mSDtfsCounter, 2128 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2388.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2461.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:30,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2128 Valid, 2382 Invalid, 5 Unknown, 0 Unchecked, 9.09ms Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2461.79ms Time] [2021-11-12 22:57:30,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2021-11-12 22:57:31,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4301. [2021-11-12 22:57:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 3038 states have (on average 1.3242264647794602) internal successors, (4023), 3053 states have internal predecessors, (4023), 1005 states have call successors, (1005), 256 states have call predecessors, (1005), 255 states have return successors, (1001), 1001 states have call predecessors, (1001), 1001 states have call successors, (1001) [2021-11-12 22:57:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 6029 transitions. [2021-11-12 22:57:31,086 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 6029 transitions. Word has length 257 [2021-11-12 22:57:31,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:31,088 INFO L470 AbstractCegarLoop]: Abstraction has 4301 states and 6029 transitions. [2021-11-12 22:57:31,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-12 22:57:31,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 6029 transitions. [2021-11-12 22:57:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-12 22:57:31,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:31,100 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:31,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:57:31,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:31,321 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:31,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash 591154039, now seen corresponding path program 1 times [2021-11-12 22:57:31,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:31,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636394501] [2021-11-12 22:57:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:31,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:31,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:31,332 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:31,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:57:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:33,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:33,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-12 22:57:34,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-12 22:57:35,247 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:35,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636394501] [2021-11-12 22:57:35,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636394501] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:35,247 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:35,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:57:35,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977207393] [2021-11-12 22:57:35,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:35,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:35,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:35,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:35,250 INFO L87 Difference]: Start difference. First operand 4301 states and 6029 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:57:37,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:38,047 INFO L93 Difference]: Finished difference Result 11222 states and 15733 transitions. [2021-11-12 22:57:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:38,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 266 [2021-11-12 22:57:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:38,109 INFO L225 Difference]: With dead ends: 11222 [2021-11-12 22:57:38,110 INFO L226 Difference]: Without dead ends: 6985 [2021-11-12 22:57:38,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:38,143 INFO L933 BasicCegarLoop]: 2633 mSDtfsCounter, 2007 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2400.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 4809 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.67ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2479.90ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:38,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 4809 Invalid, 29 Unknown, 0 Unchecked, 15.67ms Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2479.90ms Time] [2021-11-12 22:57:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6985 states. [2021-11-12 22:57:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6985 to 6961. [2021-11-12 22:57:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6961 states, 4893 states have (on average 1.3227059063968936) internal successors, (6472), 4920 states have internal predecessors, (6472), 1638 states have call successors, (1638), 428 states have call predecessors, (1638), 427 states have return successors, (1634), 1629 states have call predecessors, (1634), 1634 states have call successors, (1634) [2021-11-12 22:57:38,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6961 states to 6961 states and 9744 transitions. [2021-11-12 22:57:38,624 INFO L78 Accepts]: Start accepts. Automaton has 6961 states and 9744 transitions. Word has length 266 [2021-11-12 22:57:38,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:38,625 INFO L470 AbstractCegarLoop]: Abstraction has 6961 states and 9744 transitions. [2021-11-12 22:57:38,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:57:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6961 states and 9744 transitions. [2021-11-12 22:57:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-12 22:57:38,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:38,637 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:38,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:38,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:38,862 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2020446082, now seen corresponding path program 1 times [2021-11-12 22:57:38,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:38,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842432600] [2021-11-12 22:57:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:38,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:38,868 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:38,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:57:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:41,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:57:41,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1539 trivial. 0 not checked. [2021-11-12 22:57:42,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2021-11-12 22:57:43,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:43,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842432600] [2021-11-12 22:57:43,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842432600] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:43,179 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:43,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:57:43,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062143837] [2021-11-12 22:57:43,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:43,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:57:43,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:57:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:43,182 INFO L87 Difference]: Start difference. First operand 6961 states and 9744 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-12 22:57:45,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:57:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:46,275 INFO L93 Difference]: Finished difference Result 15328 states and 21207 transitions. [2021-11-12 22:57:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:57:46,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 311 [2021-11-12 22:57:46,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:46,343 INFO L225 Difference]: With dead ends: 15328 [2021-11-12 22:57:46,344 INFO L226 Difference]: Without dead ends: 8431 [2021-11-12 22:57:46,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:57:46,389 INFO L933 BasicCegarLoop]: 2422 mSDtfsCounter, 911 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2644.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.58ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2734.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:46,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 4539 Invalid, 98 Unknown, 0 Unchecked, 13.58ms Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 2734.00ms Time] [2021-11-12 22:57:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8431 states. [2021-11-12 22:57:46,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8431 to 8405. [2021-11-12 22:57:46,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8405 states, 5884 states have (on average 1.2997960571040108) internal successors, (7648), 5922 states have internal predecessors, (7648), 1911 states have call successors, (1911), 608 states have call predecessors, (1911), 607 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2021-11-12 22:57:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8405 states to 8405 states and 11466 transitions. [2021-11-12 22:57:46,973 INFO L78 Accepts]: Start accepts. Automaton has 8405 states and 11466 transitions. Word has length 311 [2021-11-12 22:57:46,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:46,977 INFO L470 AbstractCegarLoop]: Abstraction has 8405 states and 11466 transitions. [2021-11-12 22:57:46,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-12 22:57:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 8405 states and 11466 transitions. [2021-11-12 22:57:46,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-12 22:57:46,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:46,985 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:47,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:47,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:47,201 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:47,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:47,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1929992901, now seen corresponding path program 1 times [2021-11-12 22:57:47,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:47,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314796242] [2021-11-12 22:57:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:47,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:47,205 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:47,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:57:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:49,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:57:49,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2021-11-12 22:57:51,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:57:53,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1803 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2021-11-12 22:57:53,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:57:53,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314796242] [2021-11-12 22:57:53,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314796242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:57:53,194 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:57:53,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:57:53,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807746035] [2021-11-12 22:57:53,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:57:53,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:57:53,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:57:53,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:57:53,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:57:53,196 INFO L87 Difference]: Start difference. First operand 8405 states and 11466 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-12 22:57:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:57:53,709 INFO L93 Difference]: Finished difference Result 8411 states and 11471 transitions. [2021-11-12 22:57:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:57:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 302 [2021-11-12 22:57:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:57:53,776 INFO L225 Difference]: With dead ends: 8411 [2021-11-12 22:57:53,777 INFO L226 Difference]: Without dead ends: 8409 [2021-11-12 22:57:53,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:57:53,783 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 2075 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2083 SdHoareTripleChecker+Valid, 6576 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.75ms IncrementalHoareTripleChecker+Time [2021-11-12 22:57:53,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2083 Valid, 6576 Invalid, 18 Unknown, 0 Unchecked, 19.44ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 75.75ms Time] [2021-11-12 22:57:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8409 states. [2021-11-12 22:57:54,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8409 to 8409. [2021-11-12 22:57:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 5887 states have (on average 1.2996432818073722) internal successors, (7651), 5925 states have internal predecessors, (7651), 1911 states have call successors, (1911), 609 states have call predecessors, (1911), 608 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2021-11-12 22:57:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 11469 transitions. [2021-11-12 22:57:54,330 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 11469 transitions. Word has length 302 [2021-11-12 22:57:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:57:54,331 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 11469 transitions. [2021-11-12 22:57:54,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (59), 4 states have call predecessors, (59), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-12 22:57:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 11469 transitions. [2021-11-12 22:57:54,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 22:57:54,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:57:54,339 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:57:54,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:57:54,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:57:54,565 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:57:54,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:57:54,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1034504729, now seen corresponding path program 1 times [2021-11-12 22:57:54,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:57:54,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [317962501] [2021-11-12 22:57:54,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:57:54,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:57:54,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:57:54,571 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:57:54,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:57:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:57:57,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:57:57,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:57:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2021-11-12 22:57:59,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1805 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1803 trivial. 0 not checked. [2021-11-12 22:58:00,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:00,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [317962501] [2021-11-12 22:58:00,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [317962501] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:58:00,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:58:00,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:58:00,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318486304] [2021-11-12 22:58:00,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:00,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:58:00,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:00,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:58:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:58:00,966 INFO L87 Difference]: Start difference. First operand 8409 states and 11469 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:58:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:01,577 INFO L93 Difference]: Finished difference Result 8415 states and 11474 transitions. [2021-11-12 22:58:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:58:01,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 307 [2021-11-12 22:58:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:01,613 INFO L225 Difference]: With dead ends: 8415 [2021-11-12 22:58:01,613 INFO L226 Difference]: Without dead ends: 8413 [2021-11-12 22:58:01,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:58:01,619 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2120 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2127 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:01,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2127 Valid, 6578 Invalid, 17 Unknown, 0 Unchecked, 18.91ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 66.73ms Time] [2021-11-12 22:58:01,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8413 states. [2021-11-12 22:58:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8413 to 8413. [2021-11-12 22:58:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8413 states, 5890 states have (on average 1.299490662139219) internal successors, (7654), 5928 states have internal predecessors, (7654), 1911 states have call successors, (1911), 610 states have call predecessors, (1911), 609 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2021-11-12 22:58:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8413 states to 8413 states and 11472 transitions. [2021-11-12 22:58:02,125 INFO L78 Accepts]: Start accepts. Automaton has 8413 states and 11472 transitions. Word has length 307 [2021-11-12 22:58:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:02,126 INFO L470 AbstractCegarLoop]: Abstraction has 8413 states and 11472 transitions. [2021-11-12 22:58:02,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-12 22:58:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8413 states and 11472 transitions. [2021-11-12 22:58:02,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-12 22:58:02,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:02,134 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:02,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:02,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:02,358 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1545554043, now seen corresponding path program 1 times [2021-11-12 22:58:02,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:02,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670066416] [2021-11-12 22:58:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:02,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:02,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:02,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:58:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:04,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2511 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:58:04,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2021-11-12 22:58:06,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1811 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1807 trivial. 0 not checked. [2021-11-12 22:58:08,228 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:08,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670066416] [2021-11-12 22:58:08,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670066416] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:58:08,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:58:08,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:58:08,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874957291] [2021-11-12 22:58:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:08,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:58:08,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:08,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:58:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:58:08,231 INFO L87 Difference]: Start difference. First operand 8413 states and 11472 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:58:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:08,846 INFO L93 Difference]: Finished difference Result 8419 states and 11477 transitions. [2021-11-12 22:58:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:58:08,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 312 [2021-11-12 22:58:08,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:08,887 INFO L225 Difference]: With dead ends: 8419 [2021-11-12 22:58:08,887 INFO L226 Difference]: Without dead ends: 8417 [2021-11-12 22:58:08,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:58:08,894 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2120 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.87ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.61ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:08,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2126 Valid, 6578 Invalid, 17 Unknown, 0 Unchecked, 21.87ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 59.61ms Time] [2021-11-12 22:58:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2021-11-12 22:58:09,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 8417. [2021-11-12 22:58:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8417 states, 5893 states have (on average 1.29933819786187) internal successors, (7657), 5931 states have internal predecessors, (7657), 1911 states have call successors, (1911), 611 states have call predecessors, (1911), 610 states have return successors, (1907), 1890 states have call predecessors, (1907), 1907 states have call successors, (1907) [2021-11-12 22:58:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8417 states to 8417 states and 11475 transitions. [2021-11-12 22:58:09,425 INFO L78 Accepts]: Start accepts. Automaton has 8417 states and 11475 transitions. Word has length 312 [2021-11-12 22:58:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:09,427 INFO L470 AbstractCegarLoop]: Abstraction has 8417 states and 11475 transitions. [2021-11-12 22:58:09,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-12 22:58:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 8417 states and 11475 transitions. [2021-11-12 22:58:09,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-12 22:58:09,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:09,436 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 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] [2021-11-12 22:58:09,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:09,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:09,657 INFO L402 AbstractCegarLoop]: === Iteration 8 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1952493333, now seen corresponding path program 1 times [2021-11-12 22:58:09,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:09,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725771104] [2021-11-12 22:58:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:09,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:09,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:58:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:11,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:58:11,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 1737 trivial. 0 not checked. [2021-11-12 22:58:12,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:13,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1808 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1797 trivial. 0 not checked. [2021-11-12 22:58:13,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:13,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725771104] [2021-11-12 22:58:13,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725771104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:13,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:13,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:58:13,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253140332] [2021-11-12 22:58:13,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:13,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:58:13,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:13,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:58:13,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:13,269 INFO L87 Difference]: Start difference. First operand 8417 states and 11475 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-12 22:58:15,603 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:20,442 INFO L93 Difference]: Finished difference Result 21711 states and 29693 transitions. [2021-11-12 22:58:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:58:20,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 326 [2021-11-12 22:58:20,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:20,507 INFO L225 Difference]: With dead ends: 21711 [2021-11-12 22:58:20,507 INFO L226 Difference]: Without dead ends: 13751 [2021-11-12 22:58:20,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:20,536 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 4067 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5990.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 7930 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.95ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6461.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:20,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4067 Valid, 7930 Invalid, 838 Unknown, 0 Unchecked, 23.95ms Time], IncrementalHoareTripleChecker [20 Valid, 817 Invalid, 1 Unknown, 0 Unchecked, 6461.20ms Time] [2021-11-12 22:58:20,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2021-11-12 22:58:21,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13716. [2021-11-12 22:58:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13716 states, 9626 states have (on average 1.3010596301682942) internal successors, (12524), 9673 states have internal predecessors, (12524), 3104 states have call successors, (3104), 984 states have call predecessors, (3104), 983 states have return successors, (3100), 3085 states have call predecessors, (3100), 3100 states have call successors, (3100) [2021-11-12 22:58:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13716 states to 13716 states and 18728 transitions. [2021-11-12 22:58:21,511 INFO L78 Accepts]: Start accepts. Automaton has 13716 states and 18728 transitions. Word has length 326 [2021-11-12 22:58:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:21,512 INFO L470 AbstractCegarLoop]: Abstraction has 13716 states and 18728 transitions. [2021-11-12 22:58:21,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) [2021-11-12 22:58:21,512 INFO L276 IsEmpty]: Start isEmpty. Operand 13716 states and 18728 transitions. [2021-11-12 22:58:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-12 22:58:21,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:21,521 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:21,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:21,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:21,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1081325017, now seen corresponding path program 1 times [2021-11-12 22:58:21,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:21,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458727545] [2021-11-12 22:58:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:21,751 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:21,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:21,752 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:21,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:58:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:24,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:58:24,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2021-11-12 22:58:26,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:27,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1815 trivial. 0 not checked. [2021-11-12 22:58:27,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:27,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458727545] [2021-11-12 22:58:27,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458727545] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:58:27,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:58:27,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:58:27,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983094381] [2021-11-12 22:58:27,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:27,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:58:27,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:27,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:58:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:58:27,894 INFO L87 Difference]: Start difference. First operand 13716 states and 18728 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 22:58:28,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:28,663 INFO L93 Difference]: Finished difference Result 13722 states and 18733 transitions. [2021-11-12 22:58:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:58:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 317 [2021-11-12 22:58:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:28,723 INFO L225 Difference]: With dead ends: 13722 [2021-11-12 22:58:28,723 INFO L226 Difference]: Without dead ends: 13720 [2021-11-12 22:58:28,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:58:28,730 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2120 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.23ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:28,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 6578 Invalid, 17 Unknown, 0 Unchecked, 10.76ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 54.23ms Time] [2021-11-12 22:58:28,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2021-11-12 22:58:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 13720. [2021-11-12 22:58:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13720 states, 9629 states have (on average 1.300965832381348) internal successors, (12527), 9676 states have internal predecessors, (12527), 3104 states have call successors, (3104), 985 states have call predecessors, (3104), 984 states have return successors, (3100), 3085 states have call predecessors, (3100), 3100 states have call successors, (3100) [2021-11-12 22:58:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13720 states to 13720 states and 18731 transitions. [2021-11-12 22:58:29,765 INFO L78 Accepts]: Start accepts. Automaton has 13720 states and 18731 transitions. Word has length 317 [2021-11-12 22:58:29,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:29,766 INFO L470 AbstractCegarLoop]: Abstraction has 13720 states and 18731 transitions. [2021-11-12 22:58:29,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-12 22:58:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13720 states and 18731 transitions. [2021-11-12 22:58:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-12 22:58:29,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:29,773 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:29,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:29,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:29,986 INFO L402 AbstractCegarLoop]: === Iteration 10 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:29,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:29,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1387695035, now seen corresponding path program 1 times [2021-11-12 22:58:29,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:29,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363270595] [2021-11-12 22:58:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:29,990 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:29,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:29,991 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:30,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:58:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:32,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:58:32,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2021-11-12 22:58:34,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1835 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2021-11-12 22:58:35,814 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:35,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363270595] [2021-11-12 22:58:35,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363270595] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:58:35,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:58:35,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:58:35,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379380164] [2021-11-12 22:58:35,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:35,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:58:35,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:35,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:58:35,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:58:35,817 INFO L87 Difference]: Start difference. First operand 13720 states and 18731 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:58:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:36,501 INFO L93 Difference]: Finished difference Result 13726 states and 18736 transitions. [2021-11-12 22:58:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:58:36,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 322 [2021-11-12 22:58:36,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:36,558 INFO L225 Difference]: With dead ends: 13726 [2021-11-12 22:58:36,559 INFO L226 Difference]: Without dead ends: 13724 [2021-11-12 22:58:36,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:58:36,567 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2120 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2124 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.03ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:36,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2124 Valid, 6578 Invalid, 17 Unknown, 0 Unchecked, 8.99ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 54.03ms Time] [2021-11-12 22:58:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13724 states. [2021-11-12 22:58:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13724 to 13724. [2021-11-12 22:58:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13724 states, 9632 states have (on average 1.3008720930232558) internal successors, (12530), 9679 states have internal predecessors, (12530), 3104 states have call successors, (3104), 986 states have call predecessors, (3104), 985 states have return successors, (3100), 3085 states have call predecessors, (3100), 3100 states have call successors, (3100) [2021-11-12 22:58:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13724 states to 13724 states and 18734 transitions. [2021-11-12 22:58:37,543 INFO L78 Accepts]: Start accepts. Automaton has 13724 states and 18734 transitions. Word has length 322 [2021-11-12 22:58:37,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:37,544 INFO L470 AbstractCegarLoop]: Abstraction has 13724 states and 18734 transitions. [2021-11-12 22:58:37,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-12 22:58:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 13724 states and 18734 transitions. [2021-11-12 22:58:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-12 22:58:37,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:37,552 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:37,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:37,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:37,758 INFO L402 AbstractCegarLoop]: === Iteration 11 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash 293027431, now seen corresponding path program 1 times [2021-11-12 22:58:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:37,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429675024] [2021-11-12 22:58:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:37,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:37,762 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:37,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:58:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:39,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:58:39,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2021-11-12 22:58:42,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1853 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1843 trivial. 0 not checked. [2021-11-12 22:58:43,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:43,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429675024] [2021-11-12 22:58:43,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429675024] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:58:43,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:58:43,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:58:43,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003594307] [2021-11-12 22:58:43,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:43,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:58:43,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:58:43,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:58:43,602 INFO L87 Difference]: Start difference. First operand 13724 states and 18734 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-12 22:58:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:44,303 INFO L93 Difference]: Finished difference Result 13730 states and 18739 transitions. [2021-11-12 22:58:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:58:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 327 [2021-11-12 22:58:44,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:44,364 INFO L225 Difference]: With dead ends: 13730 [2021-11-12 22:58:44,364 INFO L226 Difference]: Without dead ends: 13728 [2021-11-12 22:58:44,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:58:44,373 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2120 mSDsluCounter, 4380 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 6578 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.70ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.80ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:44,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2123 Valid, 6578 Invalid, 17 Unknown, 0 Unchecked, 8.70ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 53.80ms Time] [2021-11-12 22:58:44,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13728 states. [2021-11-12 22:58:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13728 to 13728. [2021-11-12 22:58:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13728 states, 9635 states have (on average 1.3007784120394394) internal successors, (12533), 9682 states have internal predecessors, (12533), 3104 states have call successors, (3104), 987 states have call predecessors, (3104), 986 states have return successors, (3100), 3085 states have call predecessors, (3100), 3100 states have call successors, (3100) [2021-11-12 22:58:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13728 states to 13728 states and 18737 transitions. [2021-11-12 22:58:45,478 INFO L78 Accepts]: Start accepts. Automaton has 13728 states and 18737 transitions. Word has length 327 [2021-11-12 22:58:45,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:45,479 INFO L470 AbstractCegarLoop]: Abstraction has 13728 states and 18737 transitions. [2021-11-12 22:58:45,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-12 22:58:45,479 INFO L276 IsEmpty]: Start isEmpty. Operand 13728 states and 18737 transitions. [2021-11-12 22:58:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-12 22:58:45,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:45,485 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:45,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:45,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:45,687 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 17227060, now seen corresponding path program 1 times [2021-11-12 22:58:45,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:45,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570508634] [2021-11-12 22:58:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:45,691 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:45,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:45,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:45,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:58:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:58:47,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2595 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:58:47,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:58:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2021-11-12 22:58:48,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:58:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1845 trivial. 0 not checked. [2021-11-12 22:58:49,290 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:58:49,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570508634] [2021-11-12 22:58:49,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570508634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:58:49,290 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:58:49,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:58:49,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005519371] [2021-11-12 22:58:49,291 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:58:49,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:58:49,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:58:49,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:58:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:49,293 INFO L87 Difference]: Start difference. First operand 13728 states and 18737 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-11-12 22:58:51,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:58:57,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:58:57,352 INFO L93 Difference]: Finished difference Result 30636 states and 41856 transitions. [2021-11-12 22:58:57,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:58:57,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 342 [2021-11-12 22:58:57,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:58:57,415 INFO L225 Difference]: With dead ends: 30636 [2021-11-12 22:58:57,416 INFO L226 Difference]: Without dead ends: 17365 [2021-11-12 22:58:57,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:58:57,454 INFO L933 BasicCegarLoop]: 4421 mSDtfsCounter, 4094 mSDsluCounter, 3340 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 347 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6483.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4094 SdHoareTripleChecker+Valid, 7761 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.99ms SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7014.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:58:57,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4094 Valid, 7761 Invalid, 1166 Unknown, 0 Unchecked, 18.99ms Time], IncrementalHoareTripleChecker [347 Valid, 818 Invalid, 1 Unknown, 0 Unchecked, 7014.60ms Time] [2021-11-12 22:58:57,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17365 states. [2021-11-12 22:58:58,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17365 to 17279. [2021-11-12 22:58:58,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17279 states, 12139 states have (on average 1.2999423346239394) internal successors, (15780), 12192 states have internal predecessors, (15780), 3904 states have call successors, (3904), 1234 states have call predecessors, (3904), 1233 states have return successors, (3900), 3885 states have call predecessors, (3900), 3900 states have call successors, (3900) [2021-11-12 22:58:58,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17279 states to 17279 states and 23584 transitions. [2021-11-12 22:58:58,815 INFO L78 Accepts]: Start accepts. Automaton has 17279 states and 23584 transitions. Word has length 342 [2021-11-12 22:58:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:58:58,816 INFO L470 AbstractCegarLoop]: Abstraction has 17279 states and 23584 transitions. [2021-11-12 22:58:58,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (49), 3 states have call predecessors, (49), 3 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2021-11-12 22:58:58,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17279 states and 23584 transitions. [2021-11-12 22:58:58,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-12 22:58:58,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:58:58,823 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:58:58,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 22:58:59,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:58:59,038 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:58:59,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:58:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1861512955, now seen corresponding path program 1 times [2021-11-12 22:58:59,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:58:59,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498401459] [2021-11-12 22:58:59,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:58:59,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:58:59,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:58:59,041 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:58:59,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 22:59:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:01,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2021-11-12 22:59:03,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1875 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1863 trivial. 0 not checked. [2021-11-12 22:59:05,031 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:05,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498401459] [2021-11-12 22:59:05,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498401459] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:05,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:05,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:05,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025473102] [2021-11-12 22:59:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:05,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:05,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:05,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:05,036 INFO L87 Difference]: Start difference. First operand 17279 states and 23584 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 22:59:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:06,021 INFO L93 Difference]: Finished difference Result 17431 states and 23725 transitions. [2021-11-12 22:59:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 332 [2021-11-12 22:59:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:06,073 INFO L225 Difference]: With dead ends: 17431 [2021-11-12 22:59:06,073 INFO L226 Difference]: Without dead ends: 17429 [2021-11-12 22:59:06,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:06,082 INFO L933 BasicCegarLoop]: 2198 mSDtfsCounter, 2099 mSDsluCounter, 4415 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2101 SdHoareTripleChecker+Valid, 6613 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.79ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:06,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2101 Valid, 6613 Invalid, 19 Unknown, 0 Unchecked, 9.43ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 60.79ms Time] [2021-11-12 22:59:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17429 states. [2021-11-12 22:59:07,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17429 to 17427. [2021-11-12 22:59:07,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17427 states, 12250 states have (on average 1.2994285714285714) internal successors, (15918), 12303 states have internal predecessors, (15918), 3904 states have call successors, (3904), 1271 states have call predecessors, (3904), 1270 states have return successors, (3900), 3885 states have call predecessors, (3900), 3900 states have call successors, (3900) [2021-11-12 22:59:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17427 states to 17427 states and 23722 transitions. [2021-11-12 22:59:07,372 INFO L78 Accepts]: Start accepts. Automaton has 17427 states and 23722 transitions. Word has length 332 [2021-11-12 22:59:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:07,373 INFO L470 AbstractCegarLoop]: Abstraction has 17427 states and 23722 transitions. [2021-11-12 22:59:07,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-12 22:59:07,374 INFO L276 IsEmpty]: Start isEmpty. Operand 17427 states and 23722 transitions. [2021-11-12 22:59:07,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2021-11-12 22:59:07,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:07,381 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:07,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:07,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:07,601 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:07,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash -589327705, now seen corresponding path program 1 times [2021-11-12 22:59:07,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:07,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402918100] [2021-11-12 22:59:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:07,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:07,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:07,605 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:07,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 22:59:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:09,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:09,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:12,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2021-11-12 22:59:12,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:13,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1901 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1887 trivial. 0 not checked. [2021-11-12 22:59:13,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:13,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402918100] [2021-11-12 22:59:13,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402918100] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:13,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:13,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:13,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033941052] [2021-11-12 22:59:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:13,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:13,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:13,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:13,661 INFO L87 Difference]: Start difference. First operand 17427 states and 23722 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:59:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:14,824 INFO L93 Difference]: Finished difference Result 17511 states and 23785 transitions. [2021-11-12 22:59:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 337 [2021-11-12 22:59:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:14,878 INFO L225 Difference]: With dead ends: 17511 [2021-11-12 22:59:14,878 INFO L226 Difference]: Without dead ends: 17507 [2021-11-12 22:59:14,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:14,885 INFO L933 BasicCegarLoop]: 2205 mSDtfsCounter, 2107 mSDsluCounter, 4415 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 6620 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.03ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.73ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:14,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 6620 Invalid, 19 Unknown, 0 Unchecked, 10.03ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 57.73ms Time] [2021-11-12 22:59:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17507 states. [2021-11-12 22:59:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17507 to 17505. [2021-11-12 22:59:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17505 states, 12309 states have (on average 1.2979120968397109) internal successors, (15976), 12361 states have internal predecessors, (15976), 3904 states have call successors, (3904), 1291 states have call predecessors, (3904), 1289 states have return successors, (3900), 3885 states have call predecessors, (3900), 3900 states have call successors, (3900) [2021-11-12 22:59:16,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17505 states to 17505 states and 23780 transitions. [2021-11-12 22:59:16,044 INFO L78 Accepts]: Start accepts. Automaton has 17505 states and 23780 transitions. Word has length 337 [2021-11-12 22:59:16,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:16,045 INFO L470 AbstractCegarLoop]: Abstraction has 17505 states and 23780 transitions. [2021-11-12 22:59:16,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:59:16,046 INFO L276 IsEmpty]: Start isEmpty. Operand 17505 states and 23780 transitions. [2021-11-12 22:59:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-12 22:59:16,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:16,053 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:16,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:16,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:16,266 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1225847355, now seen corresponding path program 1 times [2021-11-12 22:59:16,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:16,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716416836] [2021-11-12 22:59:16,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:16,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:16,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:16,269 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:16,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:59:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:18,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:18,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2021-11-12 22:59:21,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1931 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1915 trivial. 0 not checked. [2021-11-12 22:59:22,286 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:22,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716416836] [2021-11-12 22:59:22,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716416836] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:22,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:22,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:22,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676726609] [2021-11-12 22:59:22,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:22,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:22,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:22,289 INFO L87 Difference]: Start difference. First operand 17505 states and 23780 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-12 22:59:23,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:23,416 INFO L93 Difference]: Finished difference Result 17505 states and 23780 transitions. [2021-11-12 22:59:23,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:23,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 342 [2021-11-12 22:59:23,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:23,464 INFO L225 Difference]: With dead ends: 17505 [2021-11-12 22:59:23,464 INFO L226 Difference]: Without dead ends: 17277 [2021-11-12 22:59:23,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:23,472 INFO L933 BasicCegarLoop]: 2196 mSDtfsCounter, 2116 mSDsluCounter, 4379 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 6575 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.20ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:23,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2116 Valid, 6575 Invalid, 12 Unknown, 0 Unchecked, 9.42ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 39.20ms Time] [2021-11-12 22:59:23,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2021-11-12 22:59:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15561. [2021-11-12 22:59:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15561 states, 10951 states have (on average 1.300337868687791) internal successors, (14240), 10984 states have internal predecessors, (14240), 3471 states have call successors, (3471), 1137 states have call predecessors, (3471), 1137 states have return successors, (3471), 3463 states have call predecessors, (3471), 3471 states have call successors, (3471) [2021-11-12 22:59:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15561 states to 15561 states and 21182 transitions. [2021-11-12 22:59:24,661 INFO L78 Accepts]: Start accepts. Automaton has 15561 states and 21182 transitions. Word has length 342 [2021-11-12 22:59:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:24,662 INFO L470 AbstractCegarLoop]: Abstraction has 15561 states and 21182 transitions. [2021-11-12 22:59:24,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-12 22:59:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 15561 states and 21182 transitions. [2021-11-12 22:59:24,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-12 22:59:24,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:24,671 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:24,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:24,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:24,893 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:24,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:24,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1337803170, now seen corresponding path program 1 times [2021-11-12 22:59:24,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:24,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784860387] [2021-11-12 22:59:24,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:24,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:24,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:24,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-12 22:59:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:27,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2853 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:59:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 231 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2021-11-12 22:59:28,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1821 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1821 trivial. 0 not checked. [2021-11-12 22:59:29,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:29,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784860387] [2021-11-12 22:59:29,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784860387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:29,530 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:29,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 22:59:29,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019980656] [2021-11-12 22:59:29,531 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:29,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:59:29,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:29,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:59:29,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:59:29,532 INFO L87 Difference]: Start difference. First operand 15561 states and 21182 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-12 22:59:31,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:33,588 INFO L93 Difference]: Finished difference Result 43067 states and 58809 transitions. [2021-11-12 22:59:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:59:33,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 367 [2021-11-12 22:59:33,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:33,713 INFO L225 Difference]: With dead ends: 43067 [2021-11-12 22:59:33,713 INFO L226 Difference]: Without dead ends: 27511 [2021-11-12 22:59:33,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:59:33,781 INFO L933 BasicCegarLoop]: 2527 mSDtfsCounter, 1965 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2482.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 4630 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.01ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2561.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:33,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1965 Valid, 4630 Invalid, 59 Unknown, 0 Unchecked, 8.01ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2561.17ms Time] [2021-11-12 22:59:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27511 states. [2021-11-12 22:59:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27511 to 27451. [2021-11-12 22:59:35,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27451 states, 19490 states have (on average 1.3025141097998973) internal successors, (25386), 19565 states have internal predecessors, (25386), 6007 states have call successors, (6007), 1952 states have call predecessors, (6007), 1952 states have return successors, (6007), 5981 states have call predecessors, (6007), 6007 states have call successors, (6007) [2021-11-12 22:59:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27451 states to 27451 states and 37400 transitions. [2021-11-12 22:59:35,912 INFO L78 Accepts]: Start accepts. Automaton has 27451 states and 37400 transitions. Word has length 367 [2021-11-12 22:59:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:35,913 INFO L470 AbstractCegarLoop]: Abstraction has 27451 states and 37400 transitions. [2021-11-12 22:59:35,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 3 states have call successors, (62), 3 states have call predecessors, (62), 3 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-12 22:59:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 27451 states and 37400 transitions. [2021-11-12 22:59:35,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-12 22:59:35,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:35,922 INFO L514 BasicCegarLoop]: trace histogram [26, 26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:35,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:36,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:36,146 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1560990060, now seen corresponding path program 1 times [2021-11-12 22:59:36,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:36,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005944385] [2021-11-12 22:59:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:36,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:36,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:36,151 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:36,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 22:59:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:38,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 2745 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 22:59:38,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 386 proven. 0 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2021-11-12 22:59:40,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2058 backedges. 44 proven. 3 refuted. 0 times theorem prover too weak. 2011 trivial. 0 not checked. [2021-11-12 22:59:42,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:42,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005944385] [2021-11-12 22:59:42,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005944385] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:42,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:42,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-12 22:59:42,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523602649] [2021-11-12 22:59:42,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:42,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:59:42,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:59:42,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-12 22:59:42,933 INFO L87 Difference]: Start difference. First operand 27451 states and 37400 transitions. Second operand has 13 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 6 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 22:59:45,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:59:47,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:00:01,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:01,602 INFO L93 Difference]: Finished difference Result 67975 states and 92629 transitions. [2021-11-12 23:00:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:00:01,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 6 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 381 [2021-11-12 23:00:01,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:01,712 INFO L225 Difference]: With dead ends: 67975 [2021-11-12 23:00:01,712 INFO L226 Difference]: Without dead ends: 40469 [2021-11-12 23:00:01,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-11-12 23:00:01,789 INFO L933 BasicCegarLoop]: 3818 mSDtfsCounter, 4759 mSDsluCounter, 36317 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 899 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13788.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4781 SdHoareTripleChecker+Valid, 40135 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.93ms SdHoareTripleChecker+Time, 899 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14583.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:01,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4781 Valid, 40135 Invalid, 2989 Unknown, 0 Unchecked, 79.93ms Time], IncrementalHoareTripleChecker [899 Valid, 2088 Invalid, 2 Unknown, 0 Unchecked, 14583.43ms Time] [2021-11-12 23:00:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40469 states. [2021-11-12 23:00:04,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40469 to 27605. [2021-11-12 23:00:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27605 states, 19595 states have (on average 1.301148252105129) internal successors, (25496), 19670 states have internal predecessors, (25496), 6035 states have call successors, (6035), 1973 states have call predecessors, (6035), 1973 states have return successors, (6035), 6009 states have call predecessors, (6035), 6035 states have call successors, (6035) [2021-11-12 23:00:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27605 states to 27605 states and 37566 transitions. [2021-11-12 23:00:04,174 INFO L78 Accepts]: Start accepts. Automaton has 27605 states and 37566 transitions. Word has length 381 [2021-11-12 23:00:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:04,174 INFO L470 AbstractCegarLoop]: Abstraction has 27605 states and 37566 transitions. [2021-11-12 23:00:04,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 6 states have call successors, (40), 3 states have call predecessors, (40), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 23:00:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 27605 states and 37566 transitions. [2021-11-12 23:00:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-12 23:00:04,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:04,183 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:04,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:04,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:04,398 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1947322235, now seen corresponding path program 1 times [2021-11-12 23:00:04,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:04,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399873341] [2021-11-12 23:00:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:04,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:04,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:04,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:00:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:07,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:00:07,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 419 proven. 0 refuted. 0 times theorem prover too weak. 1732 trivial. 0 not checked. [2021-11-12 23:00:08,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2151 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2021-11-12 23:00:11,594 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:11,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399873341] [2021-11-12 23:00:11,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399873341] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:11,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:00:11,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-12 23:00:11,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923928197] [2021-11-12 23:00:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:11,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:00:11,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:00:11,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:00:11,597 INFO L87 Difference]: Start difference. First operand 27605 states and 37566 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 8 states have internal predecessors, (141), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 23:00:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:15,300 INFO L93 Difference]: Finished difference Result 57612 states and 78769 transitions. [2021-11-12 23:00:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:00:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 8 states have internal predecessors, (141), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 401 [2021-11-12 23:00:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:15,395 INFO L225 Difference]: With dead ends: 57612 [2021-11-12 23:00:15,395 INFO L226 Difference]: Without dead ends: 30123 [2021-11-12 23:00:15,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:00:15,463 INFO L933 BasicCegarLoop]: 3020 mSDtfsCounter, 599 mSDsluCounter, 23412 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 707.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 26432 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 739.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:15,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 26432 Invalid, 65 Unknown, 0 Unchecked, 27.00ms Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 739.53ms Time] [2021-11-12 23:00:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30123 states. [2021-11-12 23:00:17,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30123 to 27683. [2021-11-12 23:00:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27683 states, 19657 states have (on average 1.30019840260467) internal successors, (25558), 19733 states have internal predecessors, (25558), 6035 states have call successors, (6035), 1973 states have call predecessors, (6035), 1989 states have return successors, (6058), 6024 states have call predecessors, (6058), 6035 states have call successors, (6058) [2021-11-12 23:00:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27683 states to 27683 states and 37651 transitions. [2021-11-12 23:00:17,808 INFO L78 Accepts]: Start accepts. Automaton has 27683 states and 37651 transitions. Word has length 401 [2021-11-12 23:00:17,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:17,809 INFO L470 AbstractCegarLoop]: Abstraction has 27683 states and 37651 transitions. [2021-11-12 23:00:17,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 8 states have internal predecessors, (141), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 23:00:17,809 INFO L276 IsEmpty]: Start isEmpty. Operand 27683 states and 37651 transitions. [2021-11-12 23:00:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-12 23:00:17,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:17,819 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:17,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-12 23:00:18,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:18,034 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:18,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1691337152, now seen corresponding path program 1 times [2021-11-12 23:00:18,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:18,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981141818] [2021-11-12 23:00:18,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:18,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:18,038 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:18,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:00:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:20,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-12 23:00:20,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2179 backedges. 388 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2021-11-12 23:00:22,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2179 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2021-11-12 23:00:25,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:25,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981141818] [2021-11-12 23:00:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981141818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:25,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:25,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-12 23:00:25,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052193018] [2021-11-12 23:00:25,138 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:25,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:00:25,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:00:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:00:25,140 INFO L87 Difference]: Start difference. First operand 27683 states and 37651 transitions. Second operand has 18 states, 18 states have (on average 10.0) internal successors, (180), 14 states have internal predecessors, (180), 2 states have call successors, (57), 2 states have call predecessors, (57), 6 states have return successors, (56), 6 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-12 23:00:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:28,558 INFO L93 Difference]: Finished difference Result 55264 states and 75182 transitions. [2021-11-12 23:00:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:00:28,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 14 states have internal predecessors, (180), 2 states have call successors, (57), 2 states have call predecessors, (57), 6 states have return successors, (56), 6 states have call predecessors, (56), 2 states have call successors, (56) Word has length 432 [2021-11-12 23:00:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:28,671 INFO L225 Difference]: With dead ends: 55264 [2021-11-12 23:00:28,672 INFO L226 Difference]: Without dead ends: 27689 [2021-11-12 23:00:28,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 865 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-12 23:00:28,756 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 7 mSDsluCounter, 32098 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 549.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 34239 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 596.53ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:28,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 34239 Invalid, 111 Unknown, 0 Unchecked, 32.88ms Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 596.53ms Time] [2021-11-12 23:00:28,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27689 states. [2021-11-12 23:00:31,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27689 to 27689. [2021-11-12 23:00:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27689 states, 19665 states have (on average 1.3000254258835495) internal successors, (25565), 19733 states have internal predecessors, (25565), 6035 states have call successors, (6035), 1973 states have call predecessors, (6035), 1987 states have return successors, (6056), 6030 states have call predecessors, (6056), 6035 states have call successors, (6056) [2021-11-12 23:00:31,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27689 states to 27689 states and 37656 transitions. [2021-11-12 23:00:31,444 INFO L78 Accepts]: Start accepts. Automaton has 27689 states and 37656 transitions. Word has length 432 [2021-11-12 23:00:31,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:31,444 INFO L470 AbstractCegarLoop]: Abstraction has 27689 states and 37656 transitions. [2021-11-12 23:00:31,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 14 states have internal predecessors, (180), 2 states have call successors, (57), 2 states have call predecessors, (57), 6 states have return successors, (56), 6 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-12 23:00:31,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27689 states and 37656 transitions. [2021-11-12 23:00:31,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-11-12 23:00:31,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:31,457 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:31,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:31,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:31,681 INFO L402 AbstractCegarLoop]: === Iteration 20 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:31,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2085107391, now seen corresponding path program 1 times [2021-11-12 23:00:31,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:31,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183000837] [2021-11-12 23:00:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:31,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:31,686 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:31,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:00:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:34,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:34,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 404 proven. 0 refuted. 0 times theorem prover too weak. 1832 trivial. 0 not checked. [2021-11-12 23:00:35,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 2210 trivial. 0 not checked. [2021-11-12 23:00:36,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:36,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183000837] [2021-11-12 23:00:36,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183000837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:00:36,873 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:00:36,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:00:36,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880551568] [2021-11-12 23:00:36,873 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:36,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:00:36,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:00:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:00:36,875 INFO L87 Difference]: Start difference. First operand 27689 states and 37656 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-12 23:00:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:41,213 INFO L93 Difference]: Finished difference Result 75580 states and 105853 transitions. [2021-11-12 23:00:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:00:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 443 [2021-11-12 23:00:41,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:41,386 INFO L225 Difference]: With dead ends: 75580 [2021-11-12 23:00:41,387 INFO L226 Difference]: Without dead ends: 48009 [2021-11-12 23:00:41,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:00:41,473 INFO L933 BasicCegarLoop]: 2520 mSDtfsCounter, 1955 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 535.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 7537 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.45ms SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 619.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:41,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2125 Valid, 7537 Invalid, 336 Unknown, 0 Unchecked, 13.45ms Time], IncrementalHoareTripleChecker [324 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 619.50ms Time] [2021-11-12 23:00:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48009 states. [2021-11-12 23:00:44,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48009 to 27705. [2021-11-12 23:00:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27705 states, 19681 states have (on average 1.2997815151669123) internal successors, (25581), 19749 states have internal predecessors, (25581), 6035 states have call successors, (6035), 1973 states have call predecessors, (6035), 1987 states have return successors, (6056), 6030 states have call predecessors, (6056), 6035 states have call successors, (6056) [2021-11-12 23:00:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27705 states to 27705 states and 37672 transitions. [2021-11-12 23:00:44,743 INFO L78 Accepts]: Start accepts. Automaton has 27705 states and 37672 transitions. Word has length 443 [2021-11-12 23:00:44,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:44,744 INFO L470 AbstractCegarLoop]: Abstraction has 27705 states and 37672 transitions. [2021-11-12 23:00:44,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-12 23:00:44,744 INFO L276 IsEmpty]: Start isEmpty. Operand 27705 states and 37672 transitions. [2021-11-12 23:00:44,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-11-12 23:00:44,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:44,750 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 19, 19, 19, 19, 19, 19, 7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:00:44,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:44,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:44,951 INFO L402 AbstractCegarLoop]: === Iteration 21 === 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_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1804686101, now seen corresponding path program 1 times [2021-11-12 23:00:44,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:44,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924367658] [2021-11-12 23:00:44,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:44,955 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:44,955 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:44,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e222c17b-2a31-45ec-aa1c-8cc11c41d27b/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:00:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:47,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-12 23:00:47,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2239 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 1806 trivial. 0 not checked. [2021-11-12 23:00:49,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2239 backedges. 56 proven. 3 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2021-11-12 23:00:52,665 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:52,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924367658] [2021-11-12 23:00:52,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924367658] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:52,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:00:52,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2021-11-12 23:00:52,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041974102] [2021-11-12 23:00:52,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:52,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 23:00:52,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 23:00:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:00:52,668 INFO L87 Difference]: Start difference. First operand 27705 states and 37672 transitions. Second operand has 14 states, 13 states have (on average 13.0) internal successors, (169), 13 states have internal predecessors, (169), 6 states have call successors, (49), 3 states have call predecessors, (49), 5 states have return successors, (45), 6 states have call predecessors, (45), 6 states have call successors, (45) [2021-11-12 23:00:55,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:00:57,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []