Have program attempt to stop itself after 5 failures

Program.cs

@@ -33,12 +33,18 @@ namespace BirthdayBot
                 Console.WriteLine($"{ts:u} [{source}] {item}");
         }
 
-        private static bool _dispose = false;
         private static void OnCancelKeyPressed(object sender, ConsoleCancelEventArgs e)
         {
             e.Cancel = true;
-            if (_dispose) return;
+            ProgramStop();
-            _dispose = true;
+        }
+
+        private static bool _stopping = false;
+        public static void ProgramStop()
+        {
+            if (_stopping) return;
+            _stopping = true;
+
             var dispose = Task.Run(_bot.Dispose);
             if (!dispose.Wait(90000))
             {

ShardManager.cs

@@ -25,6 +25,11 @@ namespace BirthdayBot
         /// </summary>
         private const int WatchdogInterval = 90;
 
+        /// <summary>
+        /// Number of shards allowed to be destroyed before forcing the program to close.
+        /// </summary>
+        private const int MaxDestroyedShards = 5;
+
         /// <summary>
         /// A dictionary with shard IDs as its keys and shard instances as its values.
         /// When initialized, all keys will be created as configured. If an instance is removed,
@@ -215,7 +220,9 @@ namespace BirthdayBot
                     {
                         _shards[dead].Dispose();
                         _shards[dead] = null;
+                        _destroyedShards++;
                     }
+                    if (_destroyedShards > MaxDestroyedShards) Program.ProgramStop();
 
                     // Start up any missing shards
                     int startAllowance = 4;