./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-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_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/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_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/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_ecbbc711-3813-4003-bb48-a765e3f47ce5/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 f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:00,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:00,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:00,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:00,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:00,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:00,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:00,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:00,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:00,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:00,093 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:00,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:00,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:00,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:00,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:00,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:00,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:00,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:00,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:00,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:00,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:00,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:00,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:00,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:00,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:00,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:00,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:00,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:00,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:00,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:00,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:00,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:00,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:00,131 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:00,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:00,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:00,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:00,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:00,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:00,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:00,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:00,140 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:43:00,188 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:00,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:00,189 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:00,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:00,190 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:00,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:00,190 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:00,191 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:43:00,191 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:00,191 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:00,191 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:43:00,192 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:43:00,192 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:00,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:43:00,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:43:00,193 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:43:00,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:00,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:43:00,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:00,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:00,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:00,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:00,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:00,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:00,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:00,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:00,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:00,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:00,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:00,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:00,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:00,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:00,198 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:43:00,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:43:00,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:00,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:00,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:00,199 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2021-11-12 23:43:00,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:00,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:00,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:00,552 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:00,553 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:00,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 23:43:00,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/827cc7422/1a4df945389d4ff78d4ae813b40c03b9/FLAG37d005b2f [2021-11-12 23:43:01,766 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:01,768 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 23:43:01,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/827cc7422/1a4df945389d4ff78d4ae813b40c03b9/FLAG37d005b2f [2021-11-12 23:43:02,081 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/827cc7422/1a4df945389d4ff78d4ae813b40c03b9 [2021-11-12 23:43:02,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:02,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:02,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:02,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:02,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:02,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:02" (1/1) ... [2021-11-12 23:43:02,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7f23f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:02, skipping insertion in model container [2021-11-12 23:43:02,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:02" (1/1) ... [2021-11-12 23:43:02,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:02,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:03,915 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 23:43:03,960 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 23:43:03,963 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 23:43:03,963 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 23:43:03,976 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 23:43:04,004 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 23:43:04,030 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 23:43:04,228 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 23:43:04,232 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 23:43:04,306 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 23:43:04,314 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 23:43:04,382 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 23:43:04,393 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 23:43:04,624 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 23:43:04,625 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 23:43:04,627 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 23:43:05,144 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 23:43:05,158 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 23:43:05,164 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 23:43:05,171 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 23:43:05,180 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 23:43:05,221 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 23:43:05,230 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 23:43:05,239 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 23:43:05,246 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 23:43:05,252 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 23:43:05,259 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 23:43:05,271 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 23:43:05,287 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 23:43:05,390 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 23:43:05,390 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 23:43:05,391 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 23:43:05,391 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 23:43:05,391 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 23:43:05,392 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 23:43:05,392 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 23:43:05,393 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 23:43:05,393 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 23:43:05,394 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 23:43:05,396 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 23:43:05,405 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 23:43:05,416 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 23:43:05,772 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-12 23:43:05,775 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-12 23:43:05,775 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-12 23:43:05,776 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-12 23:43:05,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:05,863 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 23:43:05,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29421999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:05, skipping insertion in model container [2021-11-12 23:43:05,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:05,865 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:43:05,868 INFO L158 Benchmark]: Toolchain (without parser) took 3780.77ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 78.7MB in the beginning and 79.7MB in the end (delta: -960.9kB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2021-11-12 23:43:05,868 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:43:05,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3777.79ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 78.4MB in the beginning and 79.7MB in the end (delta: -1.2MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2021-11-12 23:43:05,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 121.6MB. Free memory is still 74.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3777.79ms. Allocated memory was 121.6MB in the beginning and 167.8MB in the end (delta: 46.1MB). Free memory was 78.4MB in the beginning and 79.7MB in the end (delta: -1.2MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 4951]: 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/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_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/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_ecbbc711-3813-4003-bb48-a765e3f47ce5/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 f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:43:08,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:43:08,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:43:08,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:43:08,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:43:08,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:43:08,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:43:08,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:43:08,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:43:08,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:43:08,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:43:08,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:43:08,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:43:08,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:43:08,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:43:08,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:43:08,910 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:43:08,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:43:08,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:43:08,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:43:08,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:43:08,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:43:08,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:43:08,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:43:08,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:43:08,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:43:08,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:43:08,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:43:08,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:43:08,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:43:08,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:43:08,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:43:08,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:43:08,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:43:08,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:43:08,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:43:08,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:43:08,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:43:08,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:43:08,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:43:08,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:43:08,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:43:09,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:43:09,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:43:09,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:43:09,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:43:09,052 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:43:09,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:43:09,052 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:43:09,053 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:43:09,053 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:43:09,053 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:43:09,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:43:09,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:43:09,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:43:09,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:43:09,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:43:09,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:43:09,058 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:43:09,058 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:43:09,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:43:09,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:43:09,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:43:09,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:43:09,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:43:09,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:43:09,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:09,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:43:09,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:43:09,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:43:09,061 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:43:09,061 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:43:09,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:43:09,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:43:09,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:43:09,062 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6012e8ec841b08462bbd246c354a43139de7ccb42d1c6282a50e12dbc313f31 [2021-11-12 23:43:09,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:43:09,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:43:09,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:43:09,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:43:09,558 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:43:09,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 23:43:09,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/fc6c866b3/23c05be31e5c48a588bf7f0c9e554b23/FLAGb2200cbb6 [2021-11-12 23:43:10,864 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:43:10,866 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 23:43:10,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/fc6c866b3/23c05be31e5c48a588bf7f0c9e554b23/FLAGb2200cbb6 [2021-11-12 23:43:11,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/data/fc6c866b3/23c05be31e5c48a588bf7f0c9e554b23 [2021-11-12 23:43:11,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:43:11,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:43:11,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:11,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:43:11,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:43:11,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:11" (1/1) ... [2021-11-12 23:43:11,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcbd497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:11, skipping insertion in model container [2021-11-12 23:43:11,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:43:11" (1/1) ... [2021-11-12 23:43:11,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:43:11,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:14,377 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-12 23:43:14,385 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-12 23:43:14,386 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-12 23:43:14,387 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-12 23:43:14,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:14,550 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:43:14,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:43:15,110 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-12 23:43:15,110 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-12 23:43:15,111 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-12 23:43:15,111 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-12 23:43:15,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:15,177 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:43:15,655 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314540,314553] [2021-11-12 23:43:15,655 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314706,314719] [2021-11-12 23:43:15,656 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[314870,314883] [2021-11-12 23:43:15,657 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_ecbbc711-3813-4003-bb48-a765e3f47ce5/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i[315035,315048] [2021-11-12 23:43:15,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:43:16,089 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:43:16,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16 WrapperNode [2021-11-12 23:43:16,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:43:16,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:16,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:43:16,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:43:16,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:43:16,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:43:16,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:43:16,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:43:16,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:43:16,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:43:16,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:43:16,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:43:16,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (1/1) ... [2021-11-12 23:43:16,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:43:17,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:43:17,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:43:17,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:43:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 23:43:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 23:43:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 23:43:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 23:43:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-12 23:43:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-12 23:43:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 23:43:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 23:43:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-12 23:43:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-12 23:43:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-12 23:43:17,076 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-12 23:43:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 23:43:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 23:43:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-12 23:43:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-12 23:43:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-12 23:43:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-12 23:43:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 23:43:17,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 23:43:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 23:43:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 23:43:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-12 23:43:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-12 23:43:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 23:43:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 23:43:17,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-12 23:43:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exit [2021-11-12 23:43:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 23:43:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 23:43:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:43:17,079 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-12 23:43:17,079 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-12 23:43:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 23:43:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:43:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:43:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:43:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-12 23:43:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-12 23:43:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-12 23:43:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-12 23:43:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 23:43:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 23:43:17,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 23:43:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 23:43:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-12 23:43:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_fmdev [2021-11-12 23:43:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-12 23:43:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-12 23:43:17,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 23:43:17,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 23:43:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-12 23:43:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_fmdev [2021-11-12 23:43:17,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 23:43:17,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 23:43:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 23:43:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 23:43:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-12 23:43:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-12 23:43:17,085 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-12 23:43:17,085 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-12 23:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-12 23:43:17,086 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-12 23:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-12 23:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-12 23:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-12 23:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-12 23:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-12 23:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-12 23:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-12 23:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-12 23:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-12 23:43:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-12 23:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 23:43:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 23:43:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:43:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 23:43:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 23:43:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 23:43:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-12 23:43:17,089 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-12 23:43:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-12 23:43:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-12 23:43:17,090 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-12 23:43:17,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-12 23:43:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-12 23:43:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-12 23:43:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 23:43:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 23:43:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-12 23:43:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-12 23:43:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-12 23:43:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-12 23:43:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 23:43:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:43:17,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:43:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:43:17,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-12 23:43:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-12 23:43:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-12 23:43:17,093 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-12 23:43:17,093 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-12 23:43:17,094 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-12 23:43:17,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:43:17,098 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-12 23:43:17,098 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-12 23:43:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:43:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 23:43:17,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 23:43:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 23:43:17,100 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-12 23:43:17,101 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-12 23:43:17,101 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 23:43:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 23:43:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-12 23:43:17,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-12 23:43:17,107 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-12 23:43:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-12 23:43:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-12 23:43:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-12 23:43:17,108 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-12 23:43:17,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-12 23:43:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-12 23:43:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-12 23:43:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-12 23:43:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-12 23:43:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 23:43:17,109 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 23:43:17,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:43:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:43:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-12 23:43:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-12 23:43:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-12 23:43:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-12 23:43:17,110 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-12 23:43:17,110 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-12 23:43:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:43:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-12 23:43:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-12 23:43:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:43:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:43:17,111 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-12 23:43:17,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-12 23:43:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:43:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-12 23:43:17,112 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-12 23:43:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 23:43:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:43:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:43:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-12 23:43:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-12 23:43:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-12 23:43:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-12 23:43:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-12 23:43:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-12 23:43:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-12 23:43:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-12 23:43:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-12 23:43:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-12 23:43:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-12 23:43:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-12 23:43:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-12 23:43:17,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-12 23:43:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-12 23:43:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-12 23:43:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 23:43:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 23:43:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-12 23:43:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-12 23:43:17,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-12 23:43:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_or_killable_mutex_of_fmdev [2021-11-12 23:43:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-12 23:43:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-12 23:43:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-12 23:43:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-12 23:43:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:43:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_lock [2021-11-12 23:43:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 23:43:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 23:43:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 23:43:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 23:43:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:43:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlock [2021-11-12 23:43:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-12 23:43:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-12 23:43:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-12 23:43:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-12 23:43:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 23:43:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 23:43:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 23:43:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 23:43:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 23:43:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 23:43:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-12 23:43:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-12 23:43:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-12 23:43:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-12 23:43:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-12 23:43:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-12 23:43:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-12 23:43:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-12 23:43:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-12 23:43:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-12 23:43:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-12 23:43:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-12 23:43:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 23:43:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 23:43:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-12 23:43:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-12 23:43:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-12 23:43:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-12 23:43:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-12 23:43:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-12 23:43:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 23:43:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 23:43:18,710 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 23:43:54,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-12 23:43:54,185 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:43:54,185 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:43:54,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:43:54 BoogieIcfgContainer [2021-11-12 23:43:54,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:43:54,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:43:54,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:43:54,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:43:54,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:43:11" (1/3) ... [2021-11-12 23:43:54,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d32c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:43:54, skipping insertion in model container [2021-11-12 23:43:54,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:43:16" (2/3) ... [2021-11-12 23:43:54,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47d32c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:43:54, skipping insertion in model container [2021-11-12 23:43:54,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:43:54" (3/3) ... [2021-11-12 23:43:54,201 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-mutex_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-12 23:43:54,208 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:43:54,208 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 23:43:54,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:43:54,284 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 23:43:54,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 23:43:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 1677 states, 1172 states have (on average 1.3199658703071673) internal successors, (1547), 1188 states have internal predecessors, (1547), 410 states have call successors, (410), 93 states have call predecessors, (410), 92 states have return successors, (403), 400 states have call predecessors, (403), 403 states have call successors, (403) [2021-11-12 23:43:54,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-12 23:43:54,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:43:54,390 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 23:43:54,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:43:54,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:43:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash 724850668, now seen corresponding path program 1 times [2021-11-12 23:43:54,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:43:54,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850645418] [2021-11-12 23:43:54,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:43:54,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:43:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:43:54,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:43:54,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:43:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:43:57,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2367 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:43:57,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:43:58,816 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 23:43:58,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:43:59,653 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 23:43:59,654 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:43:59,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850645418] [2021-11-12 23:43:59,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850645418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:43:59,655 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:43:59,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:43:59,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616572314] [2021-11-12 23:43:59,660 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:43:59,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:43:59,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:43:59,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:43:59,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:43:59,724 INFO L87 Difference]: Start difference. First operand has 1677 states, 1172 states have (on average 1.3199658703071673) internal successors, (1547), 1188 states have internal predecessors, (1547), 410 states have call successors, (410), 93 states have call predecessors, (410), 92 states have return successors, (403), 400 states have call predecessors, (403), 403 states have call successors, (403) 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 23:44:02,290 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 23:44:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:08,463 INFO L93 Difference]: Finished difference Result 6229 states and 8862 transitions. [2021-11-12 23:44:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:44:08,466 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 23:44:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:08,535 INFO L225 Difference]: With dead ends: 6229 [2021-11-12 23:44:08,535 INFO L226 Difference]: Without dead ends: 4576 [2021-11-12 23:44:08,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 478 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:08,555 INFO L933 BasicCegarLoop]: 3023 mSDtfsCounter, 4298 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7558.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4298 SdHoareTripleChecker+Valid, 7734 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 72.45ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8162.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:08,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4298 Valid, 7734 Invalid, 809 Unknown, 0 Unchecked, 72.45ms Time], IncrementalHoareTripleChecker [31 Valid, 777 Invalid, 1 Unknown, 0 Unchecked, 8162.95ms Time] [2021-11-12 23:44:08,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2021-11-12 23:44:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4556. [2021-11-12 23:44:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 3229 states have (on average 1.3279653143388046) internal successors, (4288), 3271 states have internal predecessors, (4288), 1067 states have call successors, (1067), 258 states have call predecessors, (1067), 257 states have return successors, (1063), 1054 states have call predecessors, (1063), 1063 states have call successors, (1063) [2021-11-12 23:44:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 6418 transitions. [2021-11-12 23:44:09,010 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 6418 transitions. Word has length 241 [2021-11-12 23:44:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:09,017 INFO L470 AbstractCegarLoop]: Abstraction has 4556 states and 6418 transitions. [2021-11-12 23:44:09,017 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 23:44:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 6418 transitions. [2021-11-12 23:44:09,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-12 23:44:09,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:09,042 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] [2021-11-12 23:44:09,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:09,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:09,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:09,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:09,266 INFO L85 PathProgramCache]: Analyzing trace with hash -636300313, now seen corresponding path program 1 times [2021-11-12 23:44:09,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:09,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672761154] [2021-11-12 23:44:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:09,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:09,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:09,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:09,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:44:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:12,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2472 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:12,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:13,132 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 23:44:13,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:14,011 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 23:44:14,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:14,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672761154] [2021-11-12 23:44:14,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672761154] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:14,013 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:14,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:44:14,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783033272] [2021-11-12 23:44:14,014 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:14,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:44:14,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:44:14,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:44:14,018 INFO L87 Difference]: Start difference. First operand 4556 states and 6418 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-12 23:44:16,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:17,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:17,359 INFO L93 Difference]: Finished difference Result 9758 states and 13581 transitions. [2021-11-12 23:44:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:44:17,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 269 [2021-11-12 23:44:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:17,416 INFO L225 Difference]: With dead ends: 9758 [2021-11-12 23:44:17,416 INFO L226 Difference]: Without dead ends: 5245 [2021-11-12 23:44:17,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 535 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 23:44:17,449 INFO L933 BasicCegarLoop]: 2597 mSDtfsCounter, 1056 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2863.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.25ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2985.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:17,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 4847 Invalid, 98 Unknown, 0 Unchecked, 20.25ms Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 1 Unknown, 0 Unchecked, 2985.96ms Time] [2021-11-12 23:44:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2021-11-12 23:44:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 5224. [2021-11-12 23:44:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5224 states, 3688 states have (on average 1.3080260303687636) internal successors, (4824), 3751 states have internal predecessors, (4824), 1176 states have call successors, (1176), 358 states have call predecessors, (1176), 357 states have return successors, (1172), 1152 states have call predecessors, (1172), 1172 states have call successors, (1172) [2021-11-12 23:44:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5224 states to 5224 states and 7172 transitions. [2021-11-12 23:44:17,831 INFO L78 Accepts]: Start accepts. Automaton has 5224 states and 7172 transitions. Word has length 269 [2021-11-12 23:44:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:17,834 INFO L470 AbstractCegarLoop]: Abstraction has 5224 states and 7172 transitions. [2021-11-12 23:44:17,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-12 23:44:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5224 states and 7172 transitions. [2021-11-12 23:44:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-12 23:44:17,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:17,848 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 23:44:17,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:18,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,073 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:18,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1252558138, now seen corresponding path program 1 times [2021-11-12 23:44:18,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:18,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125007042] [2021-11-12 23:44:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:18,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:18,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:18,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:18,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:44:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:21,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:44:21,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:23,872 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 23:44:23,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:25,434 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 23:44:25,434 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:25,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125007042] [2021-11-12 23:44:25,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125007042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:25,434 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:25,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:44:25,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124668220] [2021-11-12 23:44:25,435 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:25,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:44:25,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:25,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:44:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:44:25,437 INFO L87 Difference]: Start difference. First operand 5224 states and 7172 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 23:44:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:26,494 INFO L93 Difference]: Finished difference Result 5230 states and 7177 transitions. [2021-11-12 23:44:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:44:26,495 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 23:44:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:26,540 INFO L225 Difference]: With dead ends: 5230 [2021-11-12 23:44:26,540 INFO L226 Difference]: Without dead ends: 5228 [2021-11-12 23:44:26,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:44:26,550 INFO L933 BasicCegarLoop]: 2328 mSDtfsCounter, 2206 mSDsluCounter, 9299 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 11627 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 530.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:26,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2211 Valid, 11627 Invalid, 26 Unknown, 0 Unchecked, 40.29ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 530.22ms Time] [2021-11-12 23:44:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5228 states. [2021-11-12 23:44:26,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5228 to 5228. [2021-11-12 23:44:26,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 3691 states have (on average 1.3077756705499866) internal successors, (4827), 3754 states have internal predecessors, (4827), 1176 states have call successors, (1176), 359 states have call predecessors, (1176), 358 states have return successors, (1172), 1152 states have call predecessors, (1172), 1172 states have call successors, (1172) [2021-11-12 23:44:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 7175 transitions. [2021-11-12 23:44:26,865 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 7175 transitions. Word has length 302 [2021-11-12 23:44:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:26,866 INFO L470 AbstractCegarLoop]: Abstraction has 5228 states and 7175 transitions. [2021-11-12 23:44:26,867 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 23:44:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 7175 transitions. [2021-11-12 23:44:26,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-12 23:44:26,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:26,878 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 23:44:26,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:44:27,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:27,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:27,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash 641488544, now seen corresponding path program 1 times [2021-11-12 23:44:27,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:27,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538165553] [2021-11-12 23:44:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:27,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:27,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:27,106 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:27,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:44:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:30,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:44:30,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:33,040 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 23:44:33,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:34,477 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 23:44:34,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:34,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538165553] [2021-11-12 23:44:34,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538165553] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:34,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:34,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:44:34,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597746264] [2021-11-12 23:44:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:34,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:44:34,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:44:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:44:34,480 INFO L87 Difference]: Start difference. First operand 5228 states and 7175 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 23:44:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:35,480 INFO L93 Difference]: Finished difference Result 5234 states and 7180 transitions. [2021-11-12 23:44:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:44:35,481 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 23:44:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:35,538 INFO L225 Difference]: With dead ends: 5234 [2021-11-12 23:44:35,538 INFO L226 Difference]: Without dead ends: 5232 [2021-11-12 23:44:35,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:44:35,547 INFO L933 BasicCegarLoop]: 2331 mSDtfsCounter, 2256 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 479.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 6980 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.11ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 557.22ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:35,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 6980 Invalid, 15 Unknown, 0 Unchecked, 27.11ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 557.22ms Time] [2021-11-12 23:44:35,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5232 states. [2021-11-12 23:44:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5232 to 5232. [2021-11-12 23:44:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5232 states, 3694 states have (on average 1.3075257173795343) internal successors, (4830), 3757 states have internal predecessors, (4830), 1176 states have call successors, (1176), 360 states have call predecessors, (1176), 359 states have return successors, (1172), 1152 states have call predecessors, (1172), 1172 states have call successors, (1172) [2021-11-12 23:44:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 7178 transitions. [2021-11-12 23:44:35,903 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 7178 transitions. Word has length 307 [2021-11-12 23:44:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 5232 states and 7178 transitions. [2021-11-12 23:44:35,907 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 23:44:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 7178 transitions. [2021-11-12 23:44:35,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-12 23:44:35,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:35,921 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 3, 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] [2021-11-12 23:44:35,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:36,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:36,145 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:36,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:36,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1379551554, now seen corresponding path program 1 times [2021-11-12 23:44:36,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:36,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985136761] [2021-11-12 23:44:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:36,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:36,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:36,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:44:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:39,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:44:39,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1727 trivial. 0 not checked. [2021-11-12 23:44:39,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2021-11-12 23:44:40,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:40,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985136761] [2021-11-12 23:44:40,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985136761] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:44:40,728 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:44:40,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:44:40,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425950975] [2021-11-12 23:44:40,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:40,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:44:40,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:44:40,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:44:40,731 INFO L87 Difference]: Start difference. First operand 5232 states and 7178 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, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:44:43,158 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:44:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:49,350 INFO L93 Difference]: Finished difference Result 14054 states and 19343 transitions. [2021-11-12 23:44:49,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:44:49,351 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, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 322 [2021-11-12 23:44:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:49,445 INFO L225 Difference]: With dead ends: 14054 [2021-11-12 23:44:49,445 INFO L226 Difference]: Without dead ends: 9473 [2021-11-12 23:44:49,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 640 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 23:44:49,487 INFO L933 BasicCegarLoop]: 4697 mSDtfsCounter, 4277 mSDsluCounter, 4025 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7389.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4277 SdHoareTripleChecker+Valid, 8722 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.85ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8025.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:49,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4277 Valid, 8722 Invalid, 841 Unknown, 0 Unchecked, 38.85ms Time], IncrementalHoareTripleChecker [20 Valid, 820 Invalid, 1 Unknown, 0 Unchecked, 8025.76ms Time] [2021-11-12 23:44:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9473 states. [2021-11-12 23:44:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9473 to 9445. [2021-11-12 23:44:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 6687 states have (on average 1.3109017496635262) internal successors, (8766), 6794 states have internal predecessors, (8766), 2114 states have call successors, (2114), 642 states have call predecessors, (2114), 641 states have return successors, (2110), 2078 states have call predecessors, (2110), 2110 states have call successors, (2110) [2021-11-12 23:44:50,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 12990 transitions. [2021-11-12 23:44:50,213 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 12990 transitions. Word has length 322 [2021-11-12 23:44:50,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:50,214 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 12990 transitions. [2021-11-12 23:44:50,215 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, (41), 3 states have call predecessors, (41), 3 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2021-11-12 23:44:50,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 12990 transitions. [2021-11-12 23:44:50,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-12 23:44:50,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:50,229 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 23:44:50,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:50,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:50,453 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash -510751558, now seen corresponding path program 1 times [2021-11-12 23:44:50,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:50,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836432018] [2021-11-12 23:44:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:50,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:50,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:50,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:50,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:44:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:44:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2513 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:44:53,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:44:56,005 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 23:44:56,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:44:57,360 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 23:44:57,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:44:57,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836432018] [2021-11-12 23:44:57,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836432018] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:44:57,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:44:57,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:44:57,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968970016] [2021-11-12 23:44:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:44:57,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:44:57,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:44:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:44:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:44:57,363 INFO L87 Difference]: Start difference. First operand 9445 states and 12990 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 23:44:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:44:58,471 INFO L93 Difference]: Finished difference Result 9451 states and 12995 transitions. [2021-11-12 23:44:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:44:58,472 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 23:44:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:44:58,539 INFO L225 Difference]: With dead ends: 9451 [2021-11-12 23:44:58,540 INFO L226 Difference]: Without dead ends: 9449 [2021-11-12 23:44:58,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:44:58,550 INFO L933 BasicCegarLoop]: 2331 mSDtfsCounter, 2256 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 461.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2259 SdHoareTripleChecker+Valid, 6980 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.79ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 536.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:44:58,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2259 Valid, 6980 Invalid, 15 Unknown, 0 Unchecked, 16.79ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 536.73ms Time] [2021-11-12 23:44:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9449 states. [2021-11-12 23:44:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9449 to 9449. [2021-11-12 23:44:59,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9449 states, 6690 states have (on average 1.310762331838565) internal successors, (8769), 6797 states have internal predecessors, (8769), 2114 states have call successors, (2114), 643 states have call predecessors, (2114), 642 states have return successors, (2110), 2078 states have call predecessors, (2110), 2110 states have call successors, (2110) [2021-11-12 23:44:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9449 states to 9449 states and 12993 transitions. [2021-11-12 23:44:59,296 INFO L78 Accepts]: Start accepts. Automaton has 9449 states and 12993 transitions. Word has length 312 [2021-11-12 23:44:59,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:44:59,299 INFO L470 AbstractCegarLoop]: Abstraction has 9449 states and 12993 transitions. [2021-11-12 23:44:59,299 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 23:44:59,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9449 states and 12993 transitions. [2021-11-12 23:44:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-12 23:44:59,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:44:59,314 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 23:44:59,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:44:59,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:44:59,528 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:44:59,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:44:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1146540384, now seen corresponding path program 1 times [2021-11-12 23:44:59,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:44:59,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257725720] [2021-11-12 23:44:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:44:59,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:44:59,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:44:59,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:44:59,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:45:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:45:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:04,986 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 23:45:04,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:06,422 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 23:45:06,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:06,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257725720] [2021-11-12 23:45:06,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257725720] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:06,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:06,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:45:06,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751323640] [2021-11-12 23:45:06,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:06,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:06,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:06,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:06,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:06,425 INFO L87 Difference]: Start difference. First operand 9449 states and 12993 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 23:45:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:07,380 INFO L93 Difference]: Finished difference Result 9455 states and 12998 transitions. [2021-11-12 23:45:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:45:07,380 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 23:45:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:07,429 INFO L225 Difference]: With dead ends: 9455 [2021-11-12 23:45:07,430 INFO L226 Difference]: Without dead ends: 9453 [2021-11-12 23:45:07,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:07,439 INFO L933 BasicCegarLoop]: 2331 mSDtfsCounter, 2256 mSDsluCounter, 4649 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 449.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2258 SdHoareTripleChecker+Valid, 6980 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 516.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:07,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2258 Valid, 6980 Invalid, 15 Unknown, 0 Unchecked, 11.26ms Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 516.96ms Time] [2021-11-12 23:45:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2021-11-12 23:45:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 9453. [2021-11-12 23:45:08,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9453 states, 6693 states have (on average 1.3106230389959659) internal successors, (8772), 6800 states have internal predecessors, (8772), 2114 states have call successors, (2114), 644 states have call predecessors, (2114), 643 states have return successors, (2110), 2078 states have call predecessors, (2110), 2110 states have call successors, (2110) [2021-11-12 23:45:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9453 states to 9453 states and 12996 transitions. [2021-11-12 23:45:08,200 INFO L78 Accepts]: Start accepts. Automaton has 9453 states and 12996 transitions. Word has length 317 [2021-11-12 23:45:08,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:08,202 INFO L470 AbstractCegarLoop]: Abstraction has 9453 states and 12996 transitions. [2021-11-12 23:45:08,202 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 23:45:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 9453 states and 12996 transitions. [2021-11-12 23:45:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-12 23:45:08,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:08,219 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] [2021-11-12 23:45:08,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:08,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:08,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:45:08,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1753501080, now seen corresponding path program 1 times [2021-11-12 23:45:08,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:08,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938504691] [2021-11-12 23:45:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:08,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:08,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:08,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:08,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:45:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:11,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2652 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:11,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:12,363 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 23:45:12,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:13,198 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 23:45:13,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:13,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938504691] [2021-11-12 23:45:13,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938504691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:13,198 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:13,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:45:13,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535272431] [2021-11-12 23:45:13,199 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:13,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:45:13,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:45:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:45:13,202 INFO L87 Difference]: Start difference. First operand 9453 states and 12996 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-12 23:45:15,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:16,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:16,579 INFO L93 Difference]: Finished difference Result 26343 states and 36284 transitions. [2021-11-12 23:45:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:45:16,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 332 [2021-11-12 23:45:16,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:16,674 INFO L225 Difference]: With dead ends: 26343 [2021-11-12 23:45:16,674 INFO L226 Difference]: Without dead ends: 16954 [2021-11-12 23:45:16,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 661 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 23:45:16,737 INFO L933 BasicCegarLoop]: 2706 mSDtfsCounter, 2151 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2586.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 4995 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.32ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2675.46ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:16,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2151 Valid, 4995 Invalid, 59 Unknown, 0 Unchecked, 9.32ms Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 1 Unknown, 0 Unchecked, 2675.46ms Time] [2021-11-12 23:45:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16954 states. [2021-11-12 23:45:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16954 to 16915. [2021-11-12 23:45:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 12072 states have (on average 1.3117130550033134) internal successors, (15835), 12279 states have internal predecessors, (15835), 3707 states have call successors, (3707), 1134 states have call predecessors, (3707), 1133 states have return successors, (3703), 3635 states have call predecessors, (3703), 3703 states have call successors, (3703) [2021-11-12 23:45:18,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 23245 transitions. [2021-11-12 23:45:18,202 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 23245 transitions. Word has length 332 [2021-11-12 23:45:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:18,203 INFO L470 AbstractCegarLoop]: Abstraction has 16915 states and 23245 transitions. [2021-11-12 23:45:18,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 3 states have call successors, (50), 3 states have call predecessors, (50), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-12 23:45:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 23245 transitions. [2021-11-12 23:45:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-12 23:45:18,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:18,219 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 23:45:18,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 23:45:18,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,539 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:45:18,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:18,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1721951290, now seen corresponding path program 1 times [2021-11-12 23:45:18,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:18,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202302812] [2021-11-12 23:45:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:18,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:18,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:18,546 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:18,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:45:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:21,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:45:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:24,305 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 23:45:24,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:25,708 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 23:45:25,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:25,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202302812] [2021-11-12 23:45:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202302812] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:25,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:45:25,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470366670] [2021-11-12 23:45:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:25,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:25,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:25,712 INFO L87 Difference]: Start difference. First operand 16915 states and 23245 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 23:45:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:27,663 INFO L93 Difference]: Finished difference Result 33126 states and 45639 transitions. [2021-11-12 23:45:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:45:27,664 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, (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 23:45:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:27,903 INFO L225 Difference]: With dead ends: 33126 [2021-11-12 23:45:27,903 INFO L226 Difference]: Without dead ends: 33122 [2021-11-12 23:45:27,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:27,928 INFO L933 BasicCegarLoop]: 3014 mSDtfsCounter, 2232 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 486.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 11287 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.30ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 553.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:27,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2233 Valid, 11287 Invalid, 20 Unknown, 0 Unchecked, 20.30ms Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 553.56ms Time] [2021-11-12 23:45:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33122 states. [2021-11-12 23:45:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33122 to 32912. [2021-11-12 23:45:30,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32912 states, 23461 states have (on average 1.313669494053962) internal successors, (30820), 23899 states have internal predecessors, (30820), 7248 states have call successors, (7248), 2211 states have call predecessors, (7248), 2200 states have return successors, (7300), 7055 states have call predecessors, (7300), 7240 states have call successors, (7300) [2021-11-12 23:45:30,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32912 states to 32912 states and 45368 transitions. [2021-11-12 23:45:30,527 INFO L78 Accepts]: Start accepts. Automaton has 32912 states and 45368 transitions. Word has length 322 [2021-11-12 23:45:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:30,529 INFO L470 AbstractCegarLoop]: Abstraction has 32912 states and 45368 transitions. [2021-11-12 23:45:30,529 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 23:45:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 32912 states and 45368 transitions. [2021-11-12 23:45:30,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-12 23:45:30,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:30,542 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:30,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:30,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:30,766 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:45:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 82103149, now seen corresponding path program 1 times [2021-11-12 23:45:30,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:30,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084786683] [2021-11-12 23:45:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:30,771 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:30,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:30,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:45:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:33,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2589 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 23:45:33,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 1769 trivial. 0 not checked. [2021-11-12 23:45:34,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1840 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1825 trivial. 0 not checked. [2021-11-12 23:45:35,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:35,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084786683] [2021-11-12 23:45:35,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084786683] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:45:35,293 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:45:35,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 23:45:35,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082104074] [2021-11-12 23:45:35,294 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:35,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:45:35,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:35,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:45:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:45:35,296 INFO L87 Difference]: Start difference. First operand 32912 states and 45368 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, (47), 3 states have call predecessors, (47), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-11-12 23:45:37,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:45:45,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:45,021 INFO L93 Difference]: Finished difference Result 73090 states and 100803 transitions. [2021-11-12 23:45:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:45:45,022 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, (47), 3 states have call predecessors, (47), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) Word has length 336 [2021-11-12 23:45:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:45,291 INFO L225 Difference]: With dead ends: 73090 [2021-11-12 23:45:45,292 INFO L226 Difference]: Without dead ends: 40644 [2021-11-12 23:45:45,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 668 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 23:45:45,436 INFO L933 BasicCegarLoop]: 4722 mSDtfsCounter, 4296 mSDsluCounter, 4046 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6769.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4296 SdHoareTripleChecker+Valid, 8768 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.13ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7285.33ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:45,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4296 Valid, 8768 Invalid, 840 Unknown, 0 Unchecked, 26.13ms Time], IncrementalHoareTripleChecker [18 Valid, 821 Invalid, 1 Unknown, 0 Unchecked, 7285.33ms Time] [2021-11-12 23:45:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40644 states. [2021-11-12 23:45:48,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40644 to 40524. [2021-11-12 23:45:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40524 states, 28897 states have (on average 1.312246946049763) internal successors, (37920), 29428 states have internal predecessors, (37920), 8928 states have call successors, (8928), 2709 states have call predecessors, (8928), 2696 states have return successors, (8995), 8698 states have call predecessors, (8995), 8920 states have call successors, (8995) [2021-11-12 23:45:48,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40524 states to 40524 states and 55843 transitions. [2021-11-12 23:45:48,990 INFO L78 Accepts]: Start accepts. Automaton has 40524 states and 55843 transitions. Word has length 336 [2021-11-12 23:45:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:45:48,992 INFO L470 AbstractCegarLoop]: Abstraction has 40524 states and 55843 transitions. [2021-11-12 23:45:48,992 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, (47), 3 states have call predecessors, (47), 3 states have return successors, (45), 4 states have call predecessors, (45), 4 states have call successors, (45) [2021-11-12 23:45:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 40524 states and 55843 transitions. [2021-11-12 23:45:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-12 23:45:49,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:45:49,013 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 23:45:49,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:45:49,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:45:49,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:45:49,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:45:49,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1822837088, now seen corresponding path program 1 times [2021-11-12 23:45:49,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:45:49,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199981394] [2021-11-12 23:45:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:45:49,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:45:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:45:49,245 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:45:49,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:45:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:45:52,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2534 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:45:52,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:45:55,178 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 23:45:55,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:45:56,575 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 23:45:56,575 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:45:56,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199981394] [2021-11-12 23:45:56,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199981394] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:45:56,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:45:56,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-12 23:45:56,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418930482] [2021-11-12 23:45:56,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:45:56,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:45:56,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:45:56,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:45:56,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:45:56,578 INFO L87 Difference]: Start difference. First operand 40524 states and 55843 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 23:45:59,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:45:59,418 INFO L93 Difference]: Finished difference Result 40530 states and 55848 transitions. [2021-11-12 23:45:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:45:59,419 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 23:45:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:45:59,662 INFO L225 Difference]: With dead ends: 40530 [2021-11-12 23:45:59,662 INFO L226 Difference]: Without dead ends: 39822 [2021-11-12 23:45:59,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:45:59,697 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 2256 mSDsluCounter, 4651 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 459.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.70ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 524.57ms IncrementalHoareTripleChecker+Time [2021-11-12 23:45:59,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 6983 Invalid, 12 Unknown, 0 Unchecked, 12.70ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 524.57ms Time] [2021-11-12 23:45:59,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39822 states. [2021-11-12 23:46:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39822 to 39383. [2021-11-12 23:46:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39383 states, 28073 states have (on average 1.3141096427172017) internal successors, (36891), 28568 states have internal predecessors, (36891), 8713 states have call successors, (8713), 2606 states have call predecessors, (8713), 2594 states have return successors, (8784), 8500 states have call predecessors, (8784), 8709 states have call successors, (8784) [2021-11-12 23:46:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39383 states to 39383 states and 54388 transitions. [2021-11-12 23:46:03,092 INFO L78 Accepts]: Start accepts. Automaton has 39383 states and 54388 transitions. Word has length 327 [2021-11-12 23:46:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:03,094 INFO L470 AbstractCegarLoop]: Abstraction has 39383 states and 54388 transitions. [2021-11-12 23:46:03,095 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 23:46:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 39383 states and 54388 transitions. [2021-11-12 23:46:03,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-12 23:46:03,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:03,124 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-12 23:46:03,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:03,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:03,337 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:46:03,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:03,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1406216319, now seen corresponding path program 1 times [2021-11-12 23:46:03,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:03,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362354184] [2021-11-12 23:46:03,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:03,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:03,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:03,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:46:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:06,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:46:06,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 573 proven. 0 refuted. 0 times theorem prover too weak. 1681 trivial. 0 not checked. [2021-11-12 23:46:08,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 2203 trivial. 0 not checked. [2021-11-12 23:46:11,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:11,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362354184] [2021-11-12 23:46:11,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362354184] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:11,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:46:11,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2021-11-12 23:46:11,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822314613] [2021-11-12 23:46:11,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:11,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:46:11,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:46:11,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:46:11,195 INFO L87 Difference]: Start difference. First operand 39383 states and 54388 transitions. Second operand has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 23:46:13,705 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:18,480 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:46:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:31,726 INFO L93 Difference]: Finished difference Result 93412 states and 129040 transitions. [2021-11-12 23:46:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-12 23:46:31,726 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 380 [2021-11-12 23:46:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:31,991 INFO L225 Difference]: With dead ends: 93412 [2021-11-12 23:46:31,991 INFO L226 Difference]: Without dead ends: 53525 [2021-11-12 23:46:32,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 768 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2021-11-12 23:46:32,386 INFO L933 BasicCegarLoop]: 4186 mSDtfsCounter, 5325 mSDsluCounter, 35131 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 1064 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14612.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 39317 SdHoareTripleChecker+Invalid, 3299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 83.46ms SdHoareTripleChecker+Time, 1064 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15574.24ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:32,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5343 Valid, 39317 Invalid, 3299 Unknown, 0 Unchecked, 83.46ms Time], IncrementalHoareTripleChecker [1064 Valid, 2234 Invalid, 1 Unknown, 0 Unchecked, 15574.24ms Time] [2021-11-12 23:46:32,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53525 states. [2021-11-12 23:46:36,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53525 to 45661. [2021-11-12 23:46:36,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45661 states, 32547 states have (on average 1.3150213537345992) internal successors, (42800), 33108 states have internal predecessors, (42800), 10122 states have call successors, (10122), 3003 states have call predecessors, (10122), 2989 states have return successors, (10205), 9881 states have call predecessors, (10205), 10118 states have call successors, (10205) [2021-11-12 23:46:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45661 states to 45661 states and 63127 transitions. [2021-11-12 23:46:36,423 INFO L78 Accepts]: Start accepts. Automaton has 45661 states and 63127 transitions. Word has length 380 [2021-11-12 23:46:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:36,424 INFO L470 AbstractCegarLoop]: Abstraction has 45661 states and 63127 transitions. [2021-11-12 23:46:36,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 12 states have internal predecessors, (146), 6 states have call successors, (38), 3 states have call predecessors, (38), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 23:46:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 45661 states and 63127 transitions. [2021-11-12 23:46:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-12 23:46:36,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:36,448 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:36,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:36,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:36,661 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:46:36,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash -459845985, now seen corresponding path program 1 times [2021-11-12 23:46:36,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:36,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055756657] [2021-11-12 23:46:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:36,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:36,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:36,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:36,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:46:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:39,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 2803 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:46:39,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:46:41,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 598 proven. 0 refuted. 0 times theorem prover too weak. 1752 trivial. 0 not checked. [2021-11-12 23:46:41,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:46:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2350 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 2314 trivial. 0 not checked. [2021-11-12 23:46:45,107 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:46:45,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055756657] [2021-11-12 23:46:45,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055756657] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:46:45,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:46:45,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2021-11-12 23:46:45,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082432843] [2021-11-12 23:46:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:46:45,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 23:46:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:46:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 23:46:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:46:45,114 INFO L87 Difference]: Start difference. First operand 45661 states and 63127 transitions. Second operand has 10 states, 10 states have (on average 14.9) internal successors, (149), 8 states have internal predecessors, (149), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 23:46:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:46:50,424 INFO L93 Difference]: Finished difference Result 96748 states and 134650 transitions. [2021-11-12 23:46:50,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:46:50,425 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 8 states have internal predecessors, (149), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 412 [2021-11-12 23:46:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:46:50,649 INFO L225 Difference]: With dead ends: 96748 [2021-11-12 23:46:50,649 INFO L226 Difference]: Without dead ends: 51551 [2021-11-12 23:46:50,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:46:50,782 INFO L933 BasicCegarLoop]: 3318 mSDtfsCounter, 695 mSDsluCounter, 25699 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 790.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 29017 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 826.62ms IncrementalHoareTripleChecker+Time [2021-11-12 23:46:50,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 29017 Invalid, 65 Unknown, 0 Unchecked, 36.76ms Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 826.62ms Time] [2021-11-12 23:46:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51551 states. [2021-11-12 23:46:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51551 to 45739. [2021-11-12 23:46:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45739 states, 32609 states have (on average 1.3144223987242787) internal successors, (42862), 33171 states have internal predecessors, (42862), 10122 states have call successors, (10122), 3003 states have call predecessors, (10122), 3005 states have return successors, (10228), 9896 states have call predecessors, (10228), 10118 states have call successors, (10228) [2021-11-12 23:46:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45739 states to 45739 states and 63212 transitions. [2021-11-12 23:46:55,507 INFO L78 Accepts]: Start accepts. Automaton has 45739 states and 63212 transitions. Word has length 412 [2021-11-12 23:46:55,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:46:55,508 INFO L470 AbstractCegarLoop]: Abstraction has 45739 states and 63212 transitions. [2021-11-12 23:46:55,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.9) internal successors, (149), 8 states have internal predecessors, (149), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-12 23:46:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 45739 states and 63212 transitions. [2021-11-12 23:46:55,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2021-11-12 23:46:55,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:46:55,530 INFO L514 BasicCegarLoop]: trace histogram [28, 28, 20, 20, 20, 20, 20, 20, 7, 7, 7, 4, 4, 4, 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, 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] [2021-11-12 23:46:55,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:46:55,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,745 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_mutex__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_mutex__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:46:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:46:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash 810355684, now seen corresponding path program 1 times [2021-11-12 23:46:55,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:46:55,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125982849] [2021-11-12 23:46:55,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:46:55,750 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:46:55,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:46:55,752 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:46:55,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecbbc711-3813-4003-bb48-a765e3f47ce5/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:46:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:46:59,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:46:59,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:47:00,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2435 backedges. 586 proven. 0 refuted. 0 times theorem prover too weak. 1849 trivial. 0 not checked. [2021-11-12 23:47:00,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:47:01,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2435 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2407 trivial. 0 not checked. [2021-11-12 23:47:01,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:47:01,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125982849] [2021-11-12 23:47:01,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125982849] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:47:01,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:47:01,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:47:01,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993797865] [2021-11-12 23:47:01,662 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:47:01,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:47:01,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:47:01,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:47:01,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:47:01,664 INFO L87 Difference]: Start difference. First operand 45739 states and 63212 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 2 states have call successors, (53), 2 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-12 23:47:06,217 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []