Improve test in thread_manager, increase memory size to make it fit

src/simulator/loader.rs

@@ -490,7 +490,7 @@ impl Loader {
                 }
             }
         }
-        Ok(start_index as u64 + end_index)
+        Ok(start_index as u64 + end_index + 4)
     }
 
     /// Load the binary file and store it inside an array and try to parse it,