./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:47,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:47,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:47,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:47,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:47,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:47,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:47,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:47,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:47,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:47,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:47,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:47,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:47,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:47,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:47,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:47,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:47,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:47,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:47,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:47,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:47,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:47,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:47,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:47,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:47,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:47,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:47,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:47,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:47,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:47,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:47,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:47,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:47,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:47,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:47,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:47,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:47,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:47,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:47,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:47,420 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:49:47,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:47,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:47,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:47,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:47,461 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:47,461 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:47,461 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:47,461 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:49:47,462 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:47,462 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:47,463 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:49:47,463 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:49:47,463 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:47,464 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:49:47,464 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:49:47,464 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:49:47,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:47,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:49:47,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:47,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:49:47,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:47,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:49:47,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:47,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:49:47,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:47,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:49:47,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:47,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:47,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:47,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:47,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:47,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:49:47,469 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:49:47,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:49:47,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:49:47,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:47,470 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:47,470 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2021-11-12 22:49:47,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:47,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:47,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:47,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:47,777 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:47,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-12 22:49:47,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/1ab258070/2c415e1384f14b479a67a7aea02246be/FLAGf69176651 [2021-11-12 22:49:48,753 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:48,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-12 22:49:48,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/1ab258070/2c415e1384f14b479a67a7aea02246be/FLAGf69176651 [2021-11-12 22:49:49,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/1ab258070/2c415e1384f14b479a67a7aea02246be [2021-11-12 22:49:49,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:49,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:49,197 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:49,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:49,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:49,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:49" (1/1) ... [2021-11-12 22:49:49,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c80409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:49, skipping insertion in model container [2021-11-12 22:49:49,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:49" (1/1) ... [2021-11-12 22:49:49,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:49,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:49:52,214 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,511 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,514 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,572 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,580 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,580 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,588 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,589 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,684 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,685 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,692 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,700 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,746 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,748 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,752 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,763 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,954 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,964 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:52,965 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,041 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,050 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,067 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,084 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,092 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,103 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,113 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,121 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,128 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,135 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,142 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,149 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,156 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,176 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,187 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,207 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,217 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,229 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,231 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,238 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,239 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 22:49:53,246 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 22:49:53,246 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 22:49:53,570 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,572 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,573 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,573 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,574 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,581 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,584 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,588 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,592 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,592 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,593 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,598 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,615 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:53,629 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-12 22:49:54,725 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-12 22:49:54,728 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-12 22:49:54,728 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-12 22:49:54,729 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-12 22:49:54,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:49:54,842 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:49:54,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2a1a82d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:54, skipping insertion in model container [2021-11-12 22:49:54,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:54,843 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:49:54,845 INFO L158 Benchmark]: Toolchain (without parser) took 5648.77ms. Allocated memory was 138.4MB in the beginning and 266.3MB in the end (delta: 127.9MB). Free memory was 81.0MB in the beginning and 127.4MB in the end (delta: -46.4MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2021-11-12 22:49:54,846 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory was 108.8MB in the beginning and 108.8MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:49:54,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 5646.19ms. Allocated memory was 138.4MB in the beginning and 266.3MB in the end (delta: 127.9MB). Free memory was 81.0MB in the beginning and 127.4MB in the end (delta: -46.4MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. [2021-11-12 22:49:54,849 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory was 108.8MB in the beginning and 108.8MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 5646.19ms. Allocated memory was 138.4MB in the beginning and 266.3MB in the end (delta: 127.9MB). Free memory was 81.0MB in the beginning and 127.4MB in the end (delta: -46.4MB). Peak memory consumption was 80.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7011]: 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:49:57,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:49:57,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:49:57,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:49:57,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:49:57,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:49:57,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:49:57,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:49:57,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:49:57,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:49:57,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:49:57,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:49:57,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:49:57,130 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:49:57,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:49:57,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:49:57,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:49:57,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:49:57,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:49:57,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:49:57,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:49:57,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:49:57,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:49:57,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:49:57,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:49:57,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:49:57,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:49:57,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:49:57,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:49:57,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:49:57,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:49:57,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:49:57,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:49:57,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:49:57,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:49:57,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:49:57,177 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:49:57,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:49:57,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:49:57,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:49:57,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:49:57,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:49:57,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:49:57,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:49:57,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:49:57,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:49:57,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:49:57,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:49:57,224 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:49:57,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:49:57,225 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:49:57,225 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:49:57,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:49:57,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:49:57,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:49:57,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:49:57,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:49:57,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:49:57,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:49:57,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:49:57,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:49:57,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:49:57,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:49:57,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:49:57,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:49:57,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:49:57,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:49:57,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:49:57,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:49:57,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:49:57,231 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:49:57,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:49:57,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:49:57,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:49:57,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:49:57,232 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 463dbca1530ea0e57c159e9405d50f794488f63283b3e27908f44b92b1921358 [2021-11-12 22:49:57,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:49:57,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:49:57,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:49:57,670 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:49:57,672 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:49:57,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-12 22:49:57,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/319e2eafd/5a47f8c16f004b17bd2cc5ac06bc4f69/FLAGbc4e331c4 [2021-11-12 22:49:59,014 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:49:59,015 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-12 22:49:59,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/319e2eafd/5a47f8c16f004b17bd2cc5ac06bc4f69/FLAGbc4e331c4 [2021-11-12 22:49:59,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/data/319e2eafd/5a47f8c16f004b17bd2cc5ac06bc4f69 [2021-11-12 22:49:59,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:49:59,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:49:59,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:49:59,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:49:59,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:49:59,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:59" (1/1) ... [2021-11-12 22:49:59,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24303aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:49:59, skipping insertion in model container [2021-11-12 22:49:59,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:49:59" (1/1) ... [2021-11-12 22:49:59,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:49:59,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:50:04,891 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-12 22:50:04,894 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-12 22:50:04,895 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-12 22:50:04,895 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-12 22:50:04,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:05,009 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:50:05,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:50:05,724 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-12 22:50:05,724 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-12 22:50:05,725 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-12 22:50:05,729 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-12 22:50:05,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:05,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:50:06,357 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487146,487159] [2021-11-12 22:50:06,357 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487315,487328] [2021-11-12 22:50:06,358 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487482,487495] [2021-11-12 22:50:06,358 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_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i[487650,487663] [2021-11-12 22:50:06,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:50:06,832 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:50:06,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06 WrapperNode [2021-11-12 22:50:06,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:50:06,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:50:06,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:50:06,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:50:06,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:50:07,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:50:07,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:50:07,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:50:07,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:07,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:08,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:50:08,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:50:08,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:50:08,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:50:08,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (1/1) ... [2021-11-12 22:50:08,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:50:08,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:50:08,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:50:08,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:50:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-12 22:50:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-12 22:50:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_read [2021-11-12 22:50:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_read [2021-11-12 22:50:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure cas_pcs_link_check [2021-11-12 22:50:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_pcs_link_check [2021-11-12 22:50:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_121 [2021-11-12 22:50:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_121 [2021-11-12 22:50:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-12 22:50:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-12 22:50:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-12 22:50:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-12 22:50:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-11-12 22:50:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-11-12 22:50:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_page [2021-11-12 22:50:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_page [2021-11-12 22:50:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-12 22:50:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-12 22:50:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mii_link_check [2021-11-12 22:50:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mii_link_check [2021-11-12 22:50:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure cas_calc_tabort [2021-11-12 22:50:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_calc_tabort [2021-11-12 22:50:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2021-11-12 22:50:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2021-11-12 22:50:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_3 [2021-11-12 22:50:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_3 [2021-11-12 22:50:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-12 22:50:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-12 22:50:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:50:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-12 22:50:08,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_147 [2021-11-12 22:50:08,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_147 [2021-11-12 22:50:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_page [2021-11-12 22:50:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_page [2021-11-12 22:50:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-12 22:50:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-12 22:50:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-12 22:50:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-12 22:50:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure cas_lock_tx [2021-11-12 22:50:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_lock_tx [2021-11-12 22:50:08,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-12 22:50:08,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-12 22:50:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-12 22:50:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-12 22:50:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure cas_disable_irq [2021-11-12 22:50:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_disable_irq [2021-11-12 22:50:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure cas_free_rxds [2021-11-12 22:50:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_free_rxds [2021-11-12 22:50:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_page [2021-11-12 22:50:08,291 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_page [2021-11-12 22:50:08,291 INFO L130 BoogieDeclarations]: Found specification of procedure cas_open [2021-11-12 22:50:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_open [2021-11-12 22:50:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure cas_interrupt [2021-11-12 22:50:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_interrupt [2021-11-12 22:50:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_tiny_free [2021-11-12 22:50:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_tiny_free [2021-11-12 22:50:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure PageTail [2021-11-12 22:50:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure PageTail [2021-11-12 22:50:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_map [2021-11-12 22:50:08,292 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_map [2021-11-12 22:50:08,292 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_init [2021-11-12 22:50:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_init [2021-11-12 22:50:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-11-12 22:50:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-11-12 22:50:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_size_set [2021-11-12 22:50:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_size_set [2021-11-12 22:50:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-12 22:50:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-12 22:50:08,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-12 22:50:08,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-12 22:50:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure cas_enable_irq [2021-11-12 22:50:08,294 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_enable_irq [2021-11-12 22:50:08,294 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-12 22:50:08,294 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-12 22:50:08,296 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-12 22:50:08,297 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-12 22:50:08,297 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_dequeue [2021-11-12 22:50:08,297 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_dequeue [2021-11-12 22:50:08,297 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-12 22:50:08,298 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-12 22:50:08,298 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-12 22:50:08,299 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-12 22:50:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-12 22:50:08,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-12 22:50:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-12 22:50:08,299 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-12 22:50:08,299 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_attach [2021-11-12 22:50:08,300 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_attach [2021-11-12 22:50:08,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:50:08,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_108 [2021-11-12 22:50:08,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_108 [2021-11-12 22:50:08,300 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-12 22:50:08,300 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-12 22:50:08,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-12 22:50:08,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:50:08,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:50:08,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 22:50:08,301 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_multicast [2021-11-12 22:50:08,302 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_multicast [2021-11-12 22:50:08,302 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-12 22:50:08,302 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-12 22:50:08,302 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2021-11-12 22:50:08,302 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2021-11-12 22:50:08,303 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_free [2021-11-12 22:50:08,303 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_free [2021-11-12 22:50:08,306 INFO L130 BoogieDeclarations]: Found specification of procedure cas_tx_timeout [2021-11-12 22:50:08,306 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_tx_timeout [2021-11-12 22:50:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-12 22:50:08,307 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-12 22:50:08,307 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_pcs_link_mode [2021-11-12 22:50:08,308 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_pcs_link_mode [2021-11-12 22:50:08,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-12 22:50:08,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-12 22:50:08,309 INFO L130 BoogieDeclarations]: Found specification of procedure cas_close [2021-11-12 22:50:08,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_close [2021-11-12 22:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_swap [2021-11-12 22:50:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_swap [2021-11-12 22:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-12 22:50:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-12 22:50:08,313 INFO L130 BoogieDeclarations]: Found specification of procedure cas_netpoll [2021-11-12 22:50:08,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_netpoll [2021-11-12 22:50:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure cas_hard_reset [2021-11-12 22:50:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_hard_reset [2021-11-12 22:50:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-12 22:50:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-12 22:50:08,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-12 22:50:08,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-12 22:50:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure cas_rxc_init [2021-11-12 22:50:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_rxc_init [2021-11-12 22:50:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-12 22:50:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-12 22:50:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clear_mac_err [2021-11-12 22:50:08,315 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clear_mac_err [2021-11-12 22:50:08,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-12 22:50:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-12 22:50:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-12 22:50:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-12 22:50:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-12 22:50:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-12 22:50:08,316 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-12 22:50:08,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-12 22:50:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_3_2 [2021-11-12 22:50:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_3_2 [2021-11-12 22:50:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure cas_remove_one [2021-11-12 22:50:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_remove_one [2021-11-12 22:50:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-12 22:50:08,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_NOT_ARG_SIGN [2021-11-12 22:50:08,317 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-12 22:50:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-12 22:50:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-12 22:50:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-12 22:50:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:50:08,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-12 22:50:08,318 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2021-11-12 22:50:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2021-11-12 22:50:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:50:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-12 22:50:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-12 22:50:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2021-11-12 22:50:08,319 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2021-11-12 22:50:08,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-12 22:50:08,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-12 22:50:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-12 22:50:08,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-12 22:50:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:50:08,320 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-12 22:50:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-12 22:50:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-12 22:50:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:50:08,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:50:08,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-12 22:50:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure cas_set_link_modes [2021-11-12 22:50:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_set_link_modes [2021-11-12 22:50:08,322 INFO L130 BoogieDeclarations]: Found specification of procedure cas_link_timer [2021-11-12 22:50:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_link_timer [2021-11-12 22:50:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure cas_read_mii_link_mode [2021-11-12 22:50:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_read_mii_link_mode [2021-11-12 22:50:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2021-11-12 22:50:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2021-11-12 22:50:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-12 22:50:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-12 22:50:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-11-12 22:50:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-11-12 22:50:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure kmap_atomic [2021-11-12 22:50:08,324 INFO L138 BoogieDeclarations]: Found implementation of procedure kmap_atomic [2021-11-12 22:50:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-12 22:50:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-12 22:50:08,325 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-12 22:50:08,325 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-12 22:50:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-12 22:50:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-12 22:50:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-12 22:50:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-12 22:50:08,326 INFO L130 BoogieDeclarations]: Found specification of procedure csum_unfold [2021-11-12 22:50:08,326 INFO L138 BoogieDeclarations]: Found implementation of procedure csum_unfold [2021-11-12 22:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-12 22:50:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-12 22:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure cas_entropy_gather [2021-11-12 22:50:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_entropy_gather [2021-11-12 22:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-12 22:50:08,327 INFO L130 BoogieDeclarations]: Found specification of procedure cas_resume [2021-11-12 22:50:08,327 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_resume [2021-11-12 22:50:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:50:08,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:50:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:50:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:50:08,329 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_alloc [2021-11-12 22:50:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_alloc [2021-11-12 22:50:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:50:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-12 22:50:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-12 22:50:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-12 22:50:08,330 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-12 22:50:08,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-12 22:50:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:50:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-12 22:50:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-12 22:50:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-12 22:50:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mif_poll [2021-11-12 22:50:08,331 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mif_poll [2021-11-12 22:50:08,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-12 22:50:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-12 22:50:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure cas_unlock_tx [2021-11-12 22:50:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_unlock_tx [2021-11-12 22:50:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-12 22:50:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-12 22:50:08,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_133 [2021-11-12 22:50:08,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_133 [2021-11-12 22:50:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice [2021-11-12 22:50:08,333 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice [2021-11-12 22:50:08,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_135 [2021-11-12 22:50:08,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_135 [2021-11-12 22:50:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed_set [2021-11-12 22:50:08,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed_set [2021-11-12 22:50:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub [2021-11-12 22:50:08,340 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub [2021-11-12 22:50:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-12 22:50:08,340 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-12 22:50:08,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 22:50:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 22:50:08,341 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-12 22:50:08,341 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-12 22:50:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-12 22:50:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-12 22:50:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure tx_tiny_buf [2021-11-12 22:50:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_tiny_buf [2021-11-12 22:50:08,344 INFO L130 BoogieDeclarations]: Found specification of procedure cas_mac_reset [2021-11-12 22:50:08,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_mac_reset [2021-11-12 22:50:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_cas [2021-11-12 22:50:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_cas [2021-11-12 22:50:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:50:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-12 22:50:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-12 22:50:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_set_page [2021-11-12 22:50:08,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_set_page [2021-11-12 22:50:08,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:50:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_regs_len [2021-11-12 22:50:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_regs_len [2021-11-12 22:50:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure cas_reset [2021-11-12 22:50:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_reset [2021-11-12 22:50:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_8_2 [2021-11-12 22:50:08,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_8_2 [2021-11-12 22:50:08,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-12 22:50:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_NOT_ARG_SIGN [2021-11-12 22:50:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2021-11-12 22:50:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2021-11-12 22:50:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:50:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 22:50:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_page [2021-11-12 22:50:08,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_page [2021-11-12 22:50:08,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-12 22:50:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:50:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:50:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-12 22:50:08,348 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-12 22:50:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure cas_nway_reset [2021-11-12 22:50:08,348 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_nway_reset [2021-11-12 22:50:08,348 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 22:50:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2021-11-12 22:50:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-12 22:50:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-12 22:50:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-12 22:50:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-12 22:50:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-12 22:50:08,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-12 22:50:08,349 INFO L130 BoogieDeclarations]: Found specification of procedure cas_setup_multicast [2021-11-12 22:50:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_setup_multicast [2021-11-12 22:50:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_powerdown [2021-11-12 22:50:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_powerdown [2021-11-12 22:50:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure cas_post_rxds_ringN [2021-11-12 22:50:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_post_rxds_ringN [2021-11-12 22:50:08,350 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-12 22:50:08,350 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-12 22:50:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure cas_vpd_match [2021-11-12 22:50:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_vpd_match [2021-11-12 22:50:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_83 [2021-11-12 22:50:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_83 [2021-11-12 22:50:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_81 [2021-11-12 22:50:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_81 [2021-11-12 22:50:08,351 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-12 22:50:08,351 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-12 22:50:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_weight [2021-11-12 22:50:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_weight [2021-11-12 22:50:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-12 22:50:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-12 22:50:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure page_count [2021-11-12 22:50:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure page_count [2021-11-12 22:50:08,352 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-12 22:50:08,352 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-12 22:50:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_77 [2021-11-12 22:50:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_77 [2021-11-12 22:50:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure cas_shutdown [2021-11-12 22:50:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_shutdown [2021-11-12 22:50:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure cas_begin_auto_negotiation [2021-11-12 22:50:08,353 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_begin_auto_negotiation [2021-11-12 22:50:08,353 INFO L130 BoogieDeclarations]: Found specification of procedure skb_frag_page [2021-11-12 22:50:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_frag_page [2021-11-12 22:50:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-12 22:50:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-12 22:50:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure cas_write_txd [2021-11-12 22:50:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_write_txd [2021-11-12 22:50:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-12 22:50:08,354 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-12 22:50:08,354 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_frag_ref [2021-11-12 22:50:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_frag_ref [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-12 22:50:08,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-12 22:50:08,355 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_82 [2021-11-12 22:50:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_82 [2021-11-12 22:50:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_84 [2021-11-12 22:50:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_84 [2021-11-12 22:50:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2021-11-12 22:50:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2021-11-12 22:50:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-12 22:50:08,356 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-12 22:50:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure cas_init_hw [2021-11-12 22:50:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_init_hw [2021-11-12 22:50:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure cas_clean_rings [2021-11-12 22:50:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_clean_rings [2021-11-12 22:50:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure cas_page_free [2021-11-12 22:50:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_page_free [2021-11-12 22:50:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-12 22:50:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-12 22:50:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure cas_phy_write [2021-11-12 22:50:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_phy_write [2021-11-12 22:50:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-12 22:50:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-12 22:50:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-11-12 22:50:08,358 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-11-12 22:50:08,358 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-12 22:50:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-12 22:50:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure cas_spare_recover [2021-11-12 22:50:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_spare_recover [2021-11-12 22:50:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure ethtool_cmd_speed [2021-11-12 22:50:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ethtool_cmd_speed [2021-11-12 22:50:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-12 22:50:08,359 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-12 22:50:08,359 INFO L130 BoogieDeclarations]: Found specification of procedure cas_get_stats [2021-11-12 22:50:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cas_get_stats [2021-11-12 22:50:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-12 22:50:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-12 22:50:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-12 22:50:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-12 22:50:08,360 INFO L130 BoogieDeclarations]: Found specification of procedure __kunmap_atomic [2021-11-12 22:50:08,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __kunmap_atomic [2021-11-12 22:50:08,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-12 22:50:08,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-12 22:50:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-12 22:50:08,362 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-12 22:50:08,362 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-12 22:50:08,365 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-12 22:50:08,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_107 [2021-11-12 22:50:08,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_107 [2021-11-12 22:50:14,407 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-12 22:59:01,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:59:01,335 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-12 22:59:01,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:59:01 BoogieIcfgContainer [2021-11-12 22:59:01,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:59:01,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:59:01,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:59:01,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:59:01,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:49:59" (1/3) ... [2021-11-12 22:59:01,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:59:01, skipping insertion in model container [2021-11-12 22:59:01,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:50:06" (2/3) ... [2021-11-12 22:59:01,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d305f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:59:01, skipping insertion in model container [2021-11-12 22:59:01,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:59:01" (3/3) ... [2021-11-12 22:59:01,348 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-sun-cassini.cil.i [2021-11-12 22:59:01,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:59:01,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-12 22:59:01,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:59:01,423 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:59:01,424 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-12 22:59:01,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 3611 states, 2370 states have (on average 1.2831223628691983) internal successors, (3041), 2451 states have internal predecessors, (3041), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) [2021-11-12 22:59:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-12 22:59:01,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:01,523 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-12 22:59:01,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:01,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1160515555, now seen corresponding path program 1 times [2021-11-12 22:59:01,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:01,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890843456] [2021-11-12 22:59:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:01,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:01,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:01,558 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:01,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:59:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:09,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 2252 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:59:09,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:10,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:59:10,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:10,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890843456] [2021-11-12 22:59:10,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890843456] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:59:10,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:59:10,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-12 22:59:10,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575578689] [2021-11-12 22:59:10,457 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:10,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:59:10,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:10,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:59:10,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:10,504 INFO L87 Difference]: Start difference. First operand has 3611 states, 2370 states have (on average 1.2831223628691983) internal successors, (3041), 2451 states have internal predecessors, (3041), 1066 states have call successors, (1066), 173 states have call predecessors, (1066), 172 states have return successors, (1062), 1048 states have call predecessors, (1062), 1062 states have call successors, (1062) Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 22:59:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:11,641 INFO L93 Difference]: Finished difference Result 10186 states and 15111 transitions. [2021-11-12 22:59:11,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:59:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 50 [2021-11-12 22:59:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:11,740 INFO L225 Difference]: With dead ends: 10186 [2021-11-12 22:59:11,740 INFO L226 Difference]: Without dead ends: 6583 [2021-11-12 22:59:11,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 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 22:59:11,794 INFO L933 BasicCegarLoop]: 6154 mSDtfsCounter, 4869 mSDsluCounter, 22978 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 198.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4888 SdHoareTripleChecker+Valid, 29132 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 127.56ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 211.10ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:11,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4888 Valid, 29132 Invalid, 35 Unknown, 0 Unchecked, 127.56ms Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 211.10ms Time] [2021-11-12 22:59:11,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-11-12 22:59:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6575. [2021-11-12 22:59:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 4309 states have (on average 1.2703643536783475) internal successors, (5474), 4464 states have internal predecessors, (5474), 1936 states have call successors, (1936), 336 states have call predecessors, (1936), 327 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 22:59:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 9424 transitions. [2021-11-12 22:59:12,458 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 9424 transitions. Word has length 50 [2021-11-12 22:59:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:12,459 INFO L470 AbstractCegarLoop]: Abstraction has 6575 states and 9424 transitions. [2021-11-12 22:59:12,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 22:59:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 9424 transitions. [2021-11-12 22:59:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-12 22:59:12,464 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:12,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:12,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:12,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:12,677 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1879743799, now seen corresponding path program 1 times [2021-11-12 22:59:12,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:12,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577744565] [2021-11-12 22:59:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:12,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:12,688 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:12,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:59:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:20,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2259 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:20,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:59:20,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:21,531 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-12 22:59:21,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:21,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577744565] [2021-11-12 22:59:21,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577744565] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:21,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:21,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:21,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960968140] [2021-11-12 22:59:21,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:21,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:21,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:21,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:21,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:21,537 INFO L87 Difference]: Start difference. First operand 6575 states and 9424 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:59:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:22,303 INFO L93 Difference]: Finished difference Result 6585 states and 9433 transitions. [2021-11-12 22:59:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2021-11-12 22:59:22,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:22,368 INFO L225 Difference]: With dead ends: 6585 [2021-11-12 22:59:22,368 INFO L226 Difference]: Without dead ends: 6583 [2021-11-12 22:59:22,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:22,376 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 172.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5079 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.24ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:22,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5079 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 49.52ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 182.24ms Time] [2021-11-12 22:59:22,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6583 states. [2021-11-12 22:59:22,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6583 to 6583. [2021-11-12 22:59:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6583 states, 4315 states have (on average 1.2699884125144845) internal successors, (5480), 4470 states have internal predecessors, (5480), 1936 states have call successors, (1936), 338 states have call predecessors, (1936), 329 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 22:59:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6583 states to 6583 states and 9430 transitions. [2021-11-12 22:59:22,880 INFO L78 Accepts]: Start accepts. Automaton has 6583 states and 9430 transitions. Word has length 55 [2021-11-12 22:59:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:22,881 INFO L470 AbstractCegarLoop]: Abstraction has 6583 states and 9430 transitions. [2021-11-12 22:59:22,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-12 22:59:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 6583 states and 9430 transitions. [2021-11-12 22:59:22,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 22:59:22,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:22,893 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:59:22,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:23,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:23,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:23,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:23,119 INFO L85 PathProgramCache]: Analyzing trace with hash 276165856, now seen corresponding path program 1 times [2021-11-12 22:59:23,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:23,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5301779] [2021-11-12 22:59:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:23,124 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:23,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:23,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:23,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:59:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:30,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:59:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:32,015 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-12 22:59:32,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-12 22:59:33,599 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:33,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5301779] [2021-11-12 22:59:33,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5301779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:59:33,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1909110805] [2021-11-12 22:59:33,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:33,600 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:59:33,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:59:33,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:59:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 22:59:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:36,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 2297 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:36,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 22:59:37,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-12 22:59:38,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1909110805] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:38,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:59:38,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 22:59:38,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694079246] [2021-11-12 22:59:38,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:38,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:38,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:38,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 22:59:38,385 INFO L87 Difference]: Start difference. First operand 6583 states and 9430 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:59:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:39,489 INFO L93 Difference]: Finished difference Result 6593 states and 9439 transitions. [2021-11-12 22:59:39,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:39,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2021-11-12 22:59:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:39,547 INFO L225 Difference]: With dead ends: 6593 [2021-11-12 22:59:39,548 INFO L226 Difference]: Without dead ends: 6591 [2021-11-12 22:59:39,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 22:59:39,556 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5055 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5071 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 173.67ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:39,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5071 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 49.65ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 173.67ms Time] [2021-11-12 22:59:39,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6591 states. [2021-11-12 22:59:39,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6591 to 6591. [2021-11-12 22:59:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6591 states, 4321 states have (on average 1.269613515389956) internal successors, (5486), 4476 states have internal predecessors, (5486), 1936 states have call successors, (1936), 340 states have call predecessors, (1936), 331 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 22:59:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6591 states to 6591 states and 9436 transitions. [2021-11-12 22:59:40,026 INFO L78 Accepts]: Start accepts. Automaton has 6591 states and 9436 transitions. Word has length 67 [2021-11-12 22:59:40,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:40,026 INFO L470 AbstractCegarLoop]: Abstraction has 6591 states and 9436 transitions. [2021-11-12 22:59:40,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-12 22:59:40,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6591 states and 9436 transitions. [2021-11-12 22:59:40,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 22:59:40,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:40,030 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-12 22:59:40,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:40,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:40,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:40,456 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:40,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:40,456 INFO L85 PathProgramCache]: Analyzing trace with hash 132495113, now seen corresponding path program 1 times [2021-11-12 22:59:40,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:40,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106740936] [2021-11-12 22:59:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:40,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:40,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:40,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:59:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:47,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2273 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:47,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-12 22:59:48,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:48,773 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-12 22:59:48,773 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:48,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106740936] [2021-11-12 22:59:48,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106740936] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:48,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:48,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:48,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375569908] [2021-11-12 22:59:48,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:48,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:48,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:48,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:48,776 INFO L87 Difference]: Start difference. First operand 6591 states and 9436 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 22:59:49,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:49,525 INFO L93 Difference]: Finished difference Result 6601 states and 9445 transitions. [2021-11-12 22:59:49,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:49,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2021-11-12 22:59:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:49,606 INFO L225 Difference]: With dead ends: 6601 [2021-11-12 22:59:49,607 INFO L226 Difference]: Without dead ends: 6599 [2021-11-12 22:59:49,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:49,615 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 169.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 177.88ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:49,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5077 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 43.95ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 177.88ms Time] [2021-11-12 22:59:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2021-11-12 22:59:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6599. [2021-11-12 22:59:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6599 states, 4327 states have (on average 1.2692396579616363) internal successors, (5492), 4482 states have internal predecessors, (5492), 1936 states have call successors, (1936), 342 states have call predecessors, (1936), 333 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 22:59:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6599 states to 6599 states and 9442 transitions. [2021-11-12 22:59:50,097 INFO L78 Accepts]: Start accepts. Automaton has 6599 states and 9442 transitions. Word has length 65 [2021-11-12 22:59:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:59:50,099 INFO L470 AbstractCegarLoop]: Abstraction has 6599 states and 9442 transitions. [2021-11-12 22:59:50,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 22:59:50,100 INFO L276 IsEmpty]: Start isEmpty. Operand 6599 states and 9442 transitions. [2021-11-12 22:59:50,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-12 22:59:50,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:59:50,102 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 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] [2021-11-12 22:59:50,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:59:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:59:50,303 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 22:59:50,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:59:50,303 INFO L85 PathProgramCache]: Analyzing trace with hash 941512349, now seen corresponding path program 1 times [2021-11-12 22:59:50,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:59:50,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279714553] [2021-11-12 22:59:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:59:50,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:59:50,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:59:50,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:59:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:59:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:59:57,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:59:57,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:59:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 22:59:58,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:59:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-12 22:59:58,782 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:59:58,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279714553] [2021-11-12 22:59:58,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279714553] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:59:58,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:59:58,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 22:59:58,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412499748] [2021-11-12 22:59:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:59:58,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:59:58,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:59:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:59:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:59:58,785 INFO L87 Difference]: Start difference. First operand 6599 states and 9442 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 22:59:59,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:59:59,546 INFO L93 Difference]: Finished difference Result 6609 states and 9451 transitions. [2021-11-12 22:59:59,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:59:59,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 70 [2021-11-12 22:59:59,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:59:59,585 INFO L225 Difference]: With dead ends: 6609 [2021-11-12 22:59:59,586 INFO L226 Difference]: Without dead ends: 6607 [2021-11-12 22:59:59,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:59:59,592 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.52ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.85ms IncrementalHoareTripleChecker+Time [2021-11-12 22:59:59,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5076 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 40.52ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 180.85ms Time] [2021-11-12 22:59:59,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2021-11-12 23:00:00,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6607. [2021-11-12 23:00:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6607 states, 4333 states have (on average 1.2688668359104547) internal successors, (5498), 4488 states have internal predecessors, (5498), 1936 states have call successors, (1936), 344 states have call predecessors, (1936), 335 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 23:00:00,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 9448 transitions. [2021-11-12 23:00:00,076 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 9448 transitions. Word has length 70 [2021-11-12 23:00:00,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:00,077 INFO L470 AbstractCegarLoop]: Abstraction has 6607 states and 9448 transitions. [2021-11-12 23:00:00,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:00:00,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 9448 transitions. [2021-11-12 23:00:00,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-12 23:00:00,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:00,079 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 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] [2021-11-12 23:00:00,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:00,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:00,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:00,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:00,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1527925914, now seen corresponding path program 1 times [2021-11-12 23:00:00,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:00,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777898737] [2021-11-12 23:00:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:00,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:00,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:00,309 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:00,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:00:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:07,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:00:07,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-12 23:00:08,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-11-12 23:00:10,462 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:10,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777898737] [2021-11-12 23:00:10,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777898737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:00:10,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1182204939] [2021-11-12 23:00:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:10,463 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:10,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:00:10,476 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:00:10,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-12 23:00:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:12,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2318 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:12,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:14,303 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:00:14,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:15,167 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-12 23:00:15,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1182204939] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:15,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:00:15,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:00:15,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898285961] [2021-11-12 23:00:15,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:15,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:00:15,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:15,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:00:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:15,170 INFO L87 Difference]: Start difference. First operand 6607 states and 9448 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:00:16,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:16,133 INFO L93 Difference]: Finished difference Result 6617 states and 9457 transitions. [2021-11-12 23:00:16,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:00:16,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2021-11-12 23:00:16,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:16,169 INFO L225 Difference]: With dead ends: 6617 [2021-11-12 23:00:16,170 INFO L226 Difference]: Without dead ends: 6615 [2021-11-12 23:00:16,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:00:16,177 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5055 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5068 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 37.60ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.76ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:16,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5068 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 37.60ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 164.76ms Time] [2021-11-12 23:00:16,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6615 states. [2021-11-12 23:00:16,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6615 to 6615. [2021-11-12 23:00:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6615 states, 4339 states have (on average 1.2684950449412307) internal successors, (5504), 4494 states have internal predecessors, (5504), 1936 states have call successors, (1936), 346 states have call predecessors, (1936), 337 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 23:00:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6615 states to 6615 states and 9454 transitions. [2021-11-12 23:00:16,684 INFO L78 Accepts]: Start accepts. Automaton has 6615 states and 9454 transitions. Word has length 82 [2021-11-12 23:00:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:16,685 INFO L470 AbstractCegarLoop]: Abstraction has 6615 states and 9454 transitions. [2021-11-12 23:00:16,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:00:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 6615 states and 9454 transitions. [2021-11-12 23:00:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-12 23:00:16,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:16,687 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 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] [2021-11-12 23:00:16,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:16,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:17,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:17,103 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:17,103 INFO L85 PathProgramCache]: Analyzing trace with hash 885619165, now seen corresponding path program 1 times [2021-11-12 23:00:17,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:17,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877394468] [2021-11-12 23:00:17,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:17,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:17,108 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:17,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:00:23,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:24,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 2294 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:24,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:25,089 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-12 23:00:25,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:25,653 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-12 23:00:25,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:25,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877394468] [2021-11-12 23:00:25,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877394468] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:25,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:00:25,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:00:25,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748948964] [2021-11-12 23:00:25,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:25,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:00:25,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:25,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:00:25,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:00:25,655 INFO L87 Difference]: Start difference. First operand 6615 states and 9454 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:00:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:26,386 INFO L93 Difference]: Finished difference Result 6625 states and 9463 transitions. [2021-11-12 23:00:26,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:00:26,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2021-11-12 23:00:26,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:26,421 INFO L225 Difference]: With dead ends: 6625 [2021-11-12 23:00:26,421 INFO L226 Difference]: Without dead ends: 6623 [2021-11-12 23:00:26,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:00:26,428 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 142.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 149.95ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:26,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 30.07ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 149.95ms Time] [2021-11-12 23:00:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6623 states. [2021-11-12 23:00:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6623 to 6623. [2021-11-12 23:00:26,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6623 states, 4345 states have (on average 1.2681242807825086) internal successors, (5510), 4500 states have internal predecessors, (5510), 1936 states have call successors, (1936), 348 states have call predecessors, (1936), 339 states have return successors, (2014), 1881 states have call predecessors, (2014), 1930 states have call successors, (2014) [2021-11-12 23:00:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6623 states to 6623 states and 9460 transitions. [2021-11-12 23:00:26,958 INFO L78 Accepts]: Start accepts. Automaton has 6623 states and 9460 transitions. Word has length 80 [2021-11-12 23:00:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:26,959 INFO L470 AbstractCegarLoop]: Abstraction has 6623 states and 9460 transitions. [2021-11-12 23:00:26,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-12 23:00:26,960 INFO L276 IsEmpty]: Start isEmpty. Operand 6623 states and 9460 transitions. [2021-11-12 23:00:26,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-12 23:00:26,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:26,961 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 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] [2021-11-12 23:00:27,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:27,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:27,175 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:27,175 INFO L85 PathProgramCache]: Analyzing trace with hash 392069001, now seen corresponding path program 1 times [2021-11-12 23:00:27,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:27,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073500724] [2021-11-12 23:00:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:27,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:27,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:27,182 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:27,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:00:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:34,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2301 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:34,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:35,551 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 23:00:35,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-12 23:00:36,099 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:36,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073500724] [2021-11-12 23:00:36,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073500724] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:36,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:00:36,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:00:36,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491911184] [2021-11-12 23:00:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:36,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:00:36,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:00:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:00:36,101 INFO L87 Difference]: Start difference. First operand 6623 states and 9460 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:00:36,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:36,843 INFO L93 Difference]: Finished difference Result 9275 states and 13163 transitions. [2021-11-12 23:00:36,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:00:36,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 85 [2021-11-12 23:00:36,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:36,895 INFO L225 Difference]: With dead ends: 9275 [2021-11-12 23:00:36,895 INFO L226 Difference]: Without dead ends: 9273 [2021-11-12 23:00:36,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 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 23:00:36,904 INFO L933 BasicCegarLoop]: 6814 mSDtfsCounter, 3799 mSDsluCounter, 16746 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 139.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3810 SdHoareTripleChecker+Valid, 23560 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.42ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.55ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:36,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3810 Valid, 23560 Invalid, 29 Unknown, 0 Unchecked, 30.42ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 147.55ms Time] [2021-11-12 23:00:36,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2021-11-12 23:00:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 9265. [2021-11-12 23:00:37,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9265 states, 6053 states have (on average 1.2651577730051213) internal successors, (7658), 6245 states have internal predecessors, (7658), 2677 states have call successors, (2677), 549 states have call predecessors, (2677), 532 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2021-11-12 23:00:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9265 states to 9265 states and 13154 transitions. [2021-11-12 23:00:37,626 INFO L78 Accepts]: Start accepts. Automaton has 9265 states and 13154 transitions. Word has length 85 [2021-11-12 23:00:37,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:37,627 INFO L470 AbstractCegarLoop]: Abstraction has 9265 states and 13154 transitions. [2021-11-12 23:00:37,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-11-12 23:00:37,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9265 states and 13154 transitions. [2021-11-12 23:00:37,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-12 23:00:37,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:37,630 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2021-11-12 23:00:37,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:37,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:00:37,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1566697632, now seen corresponding path program 1 times [2021-11-12 23:00:37,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:37,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625331809] [2021-11-12 23:00:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:37,852 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:37,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:37,854 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:37,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:00:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:45,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:00:45,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:46,654 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-12 23:00:46,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-12 23:00:48,158 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:00:48,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625331809] [2021-11-12 23:00:48,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625331809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:00:48,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [576592865] [2021-11-12 23:00:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:48,159 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:00:48,160 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:00:48,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-12 23:00:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:00:50,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2339 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:00:50,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:00:52,106 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 23:00:52,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:00:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-12 23:00:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [576592865] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:00:53,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:00:53,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:00:53,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192928483] [2021-11-12 23:00:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:00:53,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:00:53,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:00:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:00:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:00:53,037 INFO L87 Difference]: Start difference. First operand 9265 states and 13154 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:00:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:00:54,066 INFO L93 Difference]: Finished difference Result 9275 states and 13163 transitions. [2021-11-12 23:00:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:00:54,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2021-11-12 23:00:54,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:00:54,114 INFO L225 Difference]: With dead ends: 9275 [2021-11-12 23:00:54,115 INFO L226 Difference]: Without dead ends: 9273 [2021-11-12 23:00:54,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:00:54,120 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5055 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 121.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:00:54,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 121.88ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 139.60ms Time] [2021-11-12 23:00:54,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2021-11-12 23:00:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 9273. [2021-11-12 23:00:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9273 states, 6059 states have (on average 1.2648951972272653) internal successors, (7664), 6251 states have internal predecessors, (7664), 2677 states have call successors, (2677), 551 states have call predecessors, (2677), 534 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2021-11-12 23:00:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9273 states to 9273 states and 13160 transitions. [2021-11-12 23:00:54,766 INFO L78 Accepts]: Start accepts. Automaton has 9273 states and 13160 transitions. Word has length 97 [2021-11-12 23:00:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:00:54,767 INFO L470 AbstractCegarLoop]: Abstraction has 9273 states and 13160 transitions. [2021-11-12 23:00:54,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:00:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 9273 states and 13160 transitions. [2021-11-12 23:00:54,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-12 23:00:54,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:00:54,769 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2021-11-12 23:00:54,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:55,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:00:55,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:00:55,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:00:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:00:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -156693658, now seen corresponding path program 1 times [2021-11-12 23:00:55,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:00:55,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823699723] [2021-11-12 23:00:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:00:55,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:00:55,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:00:55,191 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:00:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:01:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:02,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:01:02,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-12 23:01:03,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:05,436 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 23:01:05,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:05,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823699723] [2021-11-12 23:01:05,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823699723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:01:05,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1652570984] [2021-11-12 23:01:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:05,437 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:01:05,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:01:05,438 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:01:05,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-12 23:01:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:07,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:01:07,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-12 23:01:09,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-12 23:01:10,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1652570984] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:01:10,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:01:10,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:01:10,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884177332] [2021-11-12 23:01:10,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:10,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:01:10,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:10,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:01:10,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:10,403 INFO L87 Difference]: Start difference. First operand 9273 states and 13160 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:01:11,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:11,382 INFO L93 Difference]: Finished difference Result 9283 states and 13169 transitions. [2021-11-12 23:01:11,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:01:11,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 102 [2021-11-12 23:01:11,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:11,428 INFO L225 Difference]: With dead ends: 9283 [2021-11-12 23:01:11,428 INFO L226 Difference]: Without dead ends: 9281 [2021-11-12 23:01:11,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:01:11,437 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5055 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 134.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5064 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.37ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:11,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5064 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 22.53ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 142.37ms Time] [2021-11-12 23:01:11,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2021-11-12 23:01:12,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 9281. [2021-11-12 23:01:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9281 states, 6065 states have (on average 1.2646331409727947) internal successors, (7670), 6257 states have internal predecessors, (7670), 2677 states have call successors, (2677), 553 states have call predecessors, (2677), 536 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2021-11-12 23:01:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9281 states to 9281 states and 13166 transitions. [2021-11-12 23:01:12,315 INFO L78 Accepts]: Start accepts. Automaton has 9281 states and 13166 transitions. Word has length 102 [2021-11-12 23:01:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:12,316 INFO L470 AbstractCegarLoop]: Abstraction has 9281 states and 13166 transitions. [2021-11-12 23:01:12,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:01:12,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9281 states and 13166 transitions. [2021-11-12 23:01:12,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-12 23:01:12,318 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:12,318 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 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] [2021-11-12 23:01:12,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:12,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:12,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 23:01:12,727 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:01:12,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash 28361440, now seen corresponding path program 1 times [2021-11-12 23:01:12,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:12,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717841686] [2021-11-12 23:01:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:12,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:12,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:12,733 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:12,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:01:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:19,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 23:01:19,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2021-11-12 23:01:21,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 23:01:23,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:23,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717841686] [2021-11-12 23:01:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717841686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:01:23,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1345905945] [2021-11-12 23:01:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:23,055 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:01:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:01:23,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:01:23,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:01:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:25,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:01:25,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-12 23:01:27,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-12 23:01:28,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1345905945] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:01:28,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:01:28,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 15, 4] total 23 [2021-11-12 23:01:28,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530753485] [2021-11-12 23:01:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:28,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:01:28,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:01:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2021-11-12 23:01:28,186 INFO L87 Difference]: Start difference. First operand 9281 states and 13166 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:01:29,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:29,139 INFO L93 Difference]: Finished difference Result 9291 states and 13175 transitions. [2021-11-12 23:01:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:01:29,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 107 [2021-11-12 23:01:29,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:29,183 INFO L225 Difference]: With dead ends: 9291 [2021-11-12 23:01:29,184 INFO L226 Difference]: Without dead ends: 9289 [2021-11-12 23:01:29,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-11-12 23:01:29,192 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5055 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5063 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:29,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5063 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 19.38ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 147.45ms Time] [2021-11-12 23:01:29,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9289 states. [2021-11-12 23:01:29,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9289 to 9289. [2021-11-12 23:01:29,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9289 states, 6071 states have (on average 1.2643716027013672) internal successors, (7676), 6263 states have internal predecessors, (7676), 2677 states have call successors, (2677), 555 states have call predecessors, (2677), 538 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2021-11-12 23:01:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9289 states to 9289 states and 13172 transitions. [2021-11-12 23:01:30,007 INFO L78 Accepts]: Start accepts. Automaton has 9289 states and 13172 transitions. Word has length 107 [2021-11-12 23:01:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:30,008 INFO L470 AbstractCegarLoop]: Abstraction has 9289 states and 13172 transitions. [2021-11-12 23:01:30,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-12 23:01:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 9289 states and 13172 transitions. [2021-11-12 23:01:30,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-12 23:01:30,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:30,010 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 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] [2021-11-12 23:01:30,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:30,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 23:01:30,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:01:30,414 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:01:30,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:30,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1412220937, now seen corresponding path program 1 times [2021-11-12 23:01:30,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:30,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204122610] [2021-11-12 23:01:30,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:30,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:30,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:30,419 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:30,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-12 23:01:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:37,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:01:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-12 23:01:38,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-12 23:01:39,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:39,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204122610] [2021-11-12 23:01:39,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204122610] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:01:39,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:01:39,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:01:39,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552205597] [2021-11-12 23:01:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:39,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:01:39,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:01:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:01:39,264 INFO L87 Difference]: Start difference. First operand 9289 states and 13172 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:01:39,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:39,996 INFO L93 Difference]: Finished difference Result 9299 states and 13181 transitions. [2021-11-12 23:01:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:01:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 105 [2021-11-12 23:01:39,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:40,039 INFO L225 Difference]: With dead ends: 9299 [2021-11-12 23:01:40,039 INFO L226 Difference]: Without dead ends: 9297 [2021-11-12 23:01:40,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 203 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 23:01:40,048 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 129.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5069 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.38ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:40,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5069 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 19.38ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 136.90ms Time] [2021-11-12 23:01:40,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9297 states. [2021-11-12 23:01:40,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9297 to 9297. [2021-11-12 23:01:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9297 states, 6077 states have (on average 1.264110580878723) internal successors, (7682), 6269 states have internal predecessors, (7682), 2677 states have call successors, (2677), 557 states have call predecessors, (2677), 540 states have return successors, (2819), 2608 states have call predecessors, (2819), 2671 states have call successors, (2819) [2021-11-12 23:01:40,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9297 states to 9297 states and 13178 transitions. [2021-11-12 23:01:40,844 INFO L78 Accepts]: Start accepts. Automaton has 9297 states and 13178 transitions. Word has length 105 [2021-11-12 23:01:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:40,845 INFO L470 AbstractCegarLoop]: Abstraction has 9297 states and 13178 transitions. [2021-11-12 23:01:40,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-12 23:01:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 9297 states and 13178 transitions. [2021-11-12 23:01:40,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-12 23:01:40,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:40,848 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 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] [2021-11-12 23:01:40,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:41,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:01:41,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:01:41,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:41,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2088590435, now seen corresponding path program 1 times [2021-11-12 23:01:41,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:41,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587391733] [2021-11-12 23:01:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:41,075 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:41,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:41,075 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:41,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:01:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:48,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 2336 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:01:48,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:01:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-12 23:01:49,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:01:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-12 23:01:50,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:01:50,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587391733] [2021-11-12 23:01:50,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587391733] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:01:50,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:01:50,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:01:50,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592859752] [2021-11-12 23:01:50,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:01:50,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:01:50,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:01:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:01:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:01:50,087 INFO L87 Difference]: Start difference. First operand 9297 states and 13178 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:01:50,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:01:50,865 INFO L93 Difference]: Finished difference Result 9459 states and 13328 transitions. [2021-11-12 23:01:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:01:50,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2021-11-12 23:01:50,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:01:50,900 INFO L225 Difference]: With dead ends: 9459 [2021-11-12 23:01:50,900 INFO L226 Difference]: Without dead ends: 9457 [2021-11-12 23:01:50,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 213 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 23:01:50,907 INFO L933 BasicCegarLoop]: 5123 mSDtfsCounter, 5025 mSDsluCounter, 10297 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 140.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5031 SdHoareTripleChecker+Valid, 15420 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.01ms IncrementalHoareTripleChecker+Time [2021-11-12 23:01:50,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5031 Valid, 15420 Invalid, 29 Unknown, 0 Unchecked, 19.78ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 148.01ms Time] [2021-11-12 23:01:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9457 states. [2021-11-12 23:01:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9457 to 9455. [2021-11-12 23:01:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9455 states, 6185 states have (on average 1.2611156022635408) internal successors, (7800), 6379 states have internal predecessors, (7800), 2691 states have call successors, (2691), 593 states have call predecessors, (2691), 576 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2021-11-12 23:01:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9455 states to 9455 states and 13324 transitions. [2021-11-12 23:01:51,739 INFO L78 Accepts]: Start accepts. Automaton has 9455 states and 13324 transitions. Word has length 110 [2021-11-12 23:01:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:01:51,740 INFO L470 AbstractCegarLoop]: Abstraction has 9455 states and 13324 transitions. [2021-11-12 23:01:51,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-12 23:01:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 9455 states and 13324 transitions. [2021-11-12 23:01:51,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-12 23:01:51,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:01:51,743 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 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] [2021-11-12 23:01:51,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-12 23:01:51,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:01:51,967 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:01:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:01:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1397226569, now seen corresponding path program 1 times [2021-11-12 23:01:51,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:01:51,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555561318] [2021-11-12 23:01:51,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:01:51,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:01:51,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:01:51,972 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:01:51,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-12 23:01:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:01:58,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:01:58,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-12 23:02:00,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-11-12 23:02:01,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:01,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555561318] [2021-11-12 23:02:01,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555561318] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:01,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:01,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:02:01,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237890702] [2021-11-12 23:02:01,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:01,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:01,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:01,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:01,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:01,030 INFO L87 Difference]: Start difference. First operand 9455 states and 13324 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:02:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:01,947 INFO L93 Difference]: Finished difference Result 9561 states and 13406 transitions. [2021-11-12 23:02:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:02:01,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 115 [2021-11-12 23:02:01,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:01,978 INFO L225 Difference]: With dead ends: 9561 [2021-11-12 23:02:01,978 INFO L226 Difference]: Without dead ends: 9559 [2021-11-12 23:02:01,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 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 23:02:01,984 INFO L933 BasicCegarLoop]: 5111 mSDtfsCounter, 5004 mSDsluCounter, 10296 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5009 SdHoareTripleChecker+Valid, 15407 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.42ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 145.04ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:01,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5009 Valid, 15407 Invalid, 29 Unknown, 0 Unchecked, 20.42ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 145.04ms Time] [2021-11-12 23:02:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9559 states. [2021-11-12 23:02:02,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9559 to 9557. [2021-11-12 23:02:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9557 states, 6259 states have (on average 1.258667518772967) internal successors, (7878), 6453 states have internal predecessors, (7878), 2691 states have call successors, (2691), 621 states have call predecessors, (2691), 604 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2021-11-12 23:02:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9557 states to 9557 states and 13402 transitions. [2021-11-12 23:02:02,693 INFO L78 Accepts]: Start accepts. Automaton has 9557 states and 13402 transitions. Word has length 115 [2021-11-12 23:02:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:02,693 INFO L470 AbstractCegarLoop]: Abstraction has 9557 states and 13402 transitions. [2021-11-12 23:02:02,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-12 23:02:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9557 states and 13402 transitions. [2021-11-12 23:02:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:02:02,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:02,696 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 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] [2021-11-12 23:02:02,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:02,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:02,899 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:02,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash -424130851, now seen corresponding path program 1 times [2021-11-12 23:02:02,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:02,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846717852] [2021-11-12 23:02:02,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:02,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:02,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:02,904 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:02,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-12 23:02:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:09,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 2350 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:09,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-11-12 23:02:11,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:12,007 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-11-12 23:02:12,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:12,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846717852] [2021-11-12 23:02:12,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846717852] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:12,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:12,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:02:12,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136512830] [2021-11-12 23:02:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:12,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:12,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:12,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:12,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:12,010 INFO L87 Difference]: Start difference. First operand 9557 states and 13402 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:02:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:12,923 INFO L93 Difference]: Finished difference Result 9567 states and 13411 transitions. [2021-11-12 23:02:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:02:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 120 [2021-11-12 23:02:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:12,953 INFO L225 Difference]: With dead ends: 9567 [2021-11-12 23:02:12,953 INFO L226 Difference]: Without dead ends: 9565 [2021-11-12 23:02:12,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 233 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 23:02:12,960 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5066 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 147.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:12,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5066 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 19.18ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 147.50ms Time] [2021-11-12 23:02:12,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9565 states. [2021-11-12 23:02:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9565 to 9565. [2021-11-12 23:02:13,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9565 states, 6265 states have (on average 1.2584197924980047) internal successors, (7884), 6459 states have internal predecessors, (7884), 2691 states have call successors, (2691), 623 states have call predecessors, (2691), 606 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2021-11-12 23:02:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9565 states to 9565 states and 13408 transitions. [2021-11-12 23:02:13,626 INFO L78 Accepts]: Start accepts. Automaton has 9565 states and 13408 transitions. Word has length 120 [2021-11-12 23:02:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:13,626 INFO L470 AbstractCegarLoop]: Abstraction has 9565 states and 13408 transitions. [2021-11-12 23:02:13,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-12 23:02:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9565 states and 13408 transitions. [2021-11-12 23:02:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-12 23:02:13,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:13,629 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 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] [2021-11-12 23:02:13,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:13,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:13,829 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1016107145, now seen corresponding path program 1 times [2021-11-12 23:02:13,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:13,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536352414] [2021-11-12 23:02:13,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:13,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:13,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:13,835 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:13,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-12 23:02:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:20,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:02:20,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:02:22,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-12 23:02:23,043 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:23,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536352414] [2021-11-12 23:02:23,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536352414] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:23,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:23,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-12 23:02:23,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022679732] [2021-11-12 23:02:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:23,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:02:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:23,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:02:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:02:23,045 INFO L87 Difference]: Start difference. First operand 9565 states and 13408 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:02:24,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:24,163 INFO L93 Difference]: Finished difference Result 9575 states and 13417 transitions. [2021-11-12 23:02:24,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:02:24,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 125 [2021-11-12 23:02:24,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:24,191 INFO L225 Difference]: With dead ends: 9575 [2021-11-12 23:02:24,191 INFO L226 Difference]: Without dead ends: 9573 [2021-11-12 23:02:24,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:02:24,197 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5062 mSDsluCounter, 10172 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 170.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 15271 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.91ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:24,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 15271 Invalid, 27 Unknown, 0 Unchecked, 20.24ms Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 178.91ms Time] [2021-11-12 23:02:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9573 states. [2021-11-12 23:02:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9573 to 9573. [2021-11-12 23:02:24,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9573 states, 6271 states have (on average 1.2581725402647106) internal successors, (7890), 6465 states have internal predecessors, (7890), 2691 states have call successors, (2691), 625 states have call predecessors, (2691), 608 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2021-11-12 23:02:24,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 13414 transitions. [2021-11-12 23:02:24,999 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 13414 transitions. Word has length 125 [2021-11-12 23:02:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 9573 states and 13414 transitions. [2021-11-12 23:02:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:02:25,001 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 13414 transitions. [2021-11-12 23:02:25,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-12 23:02:25,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:25,004 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:25,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:25,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:25,227 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash 732724557, now seen corresponding path program 1 times [2021-11-12 23:02:25,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:25,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497954468] [2021-11-12 23:02:25,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:25,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:25,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:25,232 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:25,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-12 23:02:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:32,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 2599 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-12 23:02:32,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-12 23:02:35,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-11-12 23:02:38,508 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:38,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497954468] [2021-11-12 23:02:38,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497954468] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:02:38,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:02:38,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 19 [2021-11-12 23:02:38,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123061320] [2021-11-12 23:02:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:38,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:02:38,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:02:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:02:38,510 INFO L87 Difference]: Start difference. First operand 9573 states and 13414 transitions. Second operand has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:02:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:02:43,372 INFO L93 Difference]: Finished difference Result 19158 states and 26837 transitions. [2021-11-12 23:02:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 23:02:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 147 [2021-11-12 23:02:43,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:02:43,404 INFO L225 Difference]: With dead ends: 19158 [2021-11-12 23:02:43,404 INFO L226 Difference]: Without dead ends: 9602 [2021-11-12 23:02:43,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:02:43,465 INFO L933 BasicCegarLoop]: 5081 mSDtfsCounter, 745 mSDsluCounter, 49742 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3072.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 54823 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.04ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3266.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:02:43,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 54823 Invalid, 546 Unknown, 0 Unchecked, 85.04ms Time], IncrementalHoareTripleChecker [2 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 3266.63ms Time] [2021-11-12 23:02:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9602 states. [2021-11-12 23:02:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9602 to 9573. [2021-11-12 23:02:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9573 states, 6271 states have (on average 1.2580130760644235) internal successors, (7889), 6464 states have internal predecessors, (7889), 2691 states have call successors, (2691), 625 states have call predecessors, (2691), 608 states have return successors, (2833), 2622 states have call predecessors, (2833), 2685 states have call successors, (2833) [2021-11-12 23:02:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9573 states to 9573 states and 13413 transitions. [2021-11-12 23:02:44,509 INFO L78 Accepts]: Start accepts. Automaton has 9573 states and 13413 transitions. Word has length 147 [2021-11-12 23:02:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:02:44,510 INFO L470 AbstractCegarLoop]: Abstraction has 9573 states and 13413 transitions. [2021-11-12 23:02:44,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-12 23:02:44,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9573 states and 13413 transitions. [2021-11-12 23:02:44,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-12 23:02:44,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:02:44,514 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:02:44,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-12 23:02:44,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:02:44,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:02:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:02:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1142186960, now seen corresponding path program 1 times [2021-11-12 23:02:44,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:02:44,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233411676] [2021-11-12 23:02:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:02:44,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:02:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:02:44,744 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:02:44,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-12 23:02:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:02:52,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-12 23:02:52,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:02:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-12 23:02:53,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:02:54,929 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-12 23:02:54,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:02:54,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233411676] [2021-11-12 23:02:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233411676] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:02:54,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:02:54,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-11-12 23:02:54,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079163407] [2021-11-12 23:02:54,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:02:54,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:02:54,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:02:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:02:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:02:54,931 INFO L87 Difference]: Start difference. First operand 9573 states and 13413 transitions. Second operand has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-12 23:03:03,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:03:03,023 INFO L93 Difference]: Finished difference Result 21569 states and 30500 transitions. [2021-11-12 23:03:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 23:03:03,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 151 [2021-11-12 23:03:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:03:03,055 INFO L225 Difference]: With dead ends: 21569 [2021-11-12 23:03:03,055 INFO L226 Difference]: Without dead ends: 12015 [2021-11-12 23:03:03,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2021-11-12 23:03:03,085 INFO L933 BasicCegarLoop]: 6392 mSDtfsCounter, 2092 mSDsluCounter, 67263 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 698 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5391.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 73655 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.76ms SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5706.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:03:03,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2313 Valid, 73655 Invalid, 1486 Unknown, 0 Unchecked, 95.76ms Time], IncrementalHoareTripleChecker [698 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 5706.94ms Time] [2021-11-12 23:03:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12015 states. [2021-11-12 23:03:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12015 to 9589. [2021-11-12 23:03:04,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9589 states, 6283 states have (on average 1.2575202928537323) internal successors, (7901), 6476 states have internal predecessors, (7901), 2695 states have call successors, (2695), 625 states have call predecessors, (2695), 608 states have return successors, (2837), 2626 states have call predecessors, (2837), 2689 states have call successors, (2837) [2021-11-12 23:03:04,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9589 states to 9589 states and 13433 transitions. [2021-11-12 23:03:04,159 INFO L78 Accepts]: Start accepts. Automaton has 9589 states and 13433 transitions. Word has length 151 [2021-11-12 23:03:04,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:03:04,160 INFO L470 AbstractCegarLoop]: Abstraction has 9589 states and 13433 transitions. [2021-11-12 23:03:04,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 6 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2021-11-12 23:03:04,160 INFO L276 IsEmpty]: Start isEmpty. Operand 9589 states and 13433 transitions. [2021-11-12 23:03:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-12 23:03:04,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:03:04,163 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 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] [2021-11-12 23:03:04,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-12 23:03:04,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:03:04,386 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-12 23:03:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:03:04,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2061727203, now seen corresponding path program 1 times [2021-11-12 23:03:04,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:03:04,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1165931163] [2021-11-12 23:03:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:03:04,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:03:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:03:04,391 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:03:04,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c8a080f-f6e9-4853-8a32-1bd6e9b9cad6/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-12 23:03:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:03:11,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2364 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:03:11,428 INFO L286 TraceCheckSpWp]: Computing forward predicates...