Optimize the maximum value going back caller_location

lib/diver_down/trace/session.rb

@@ -89,9 +89,17 @@ def build_trace_point
                 end
               end
 
-              # `caller_location` is nil if it is filtered by target_files
-              caller_location = find_neast_caller_location(call_stack.stack_size)
+              # Search is a heavy process and should be terminated early.
+              # The position of the most recently found caller or the start of trace is used as the maximum value.
+              maximum_back_stack_size = if call_stack.empty_context_stack?
+                                          call_stack.stack_size
+                                        else
+                                          call_stack.stack_size - call_stack.context_stack_size[-1]
+                                        end
+
+              caller_location = find_neast_caller_location(maximum_back_stack_size)
 
+              # `caller_location` is nil if it is filtered by target_files
               if caller_location
                 pushed = true
                 source = @definition.find_or_build_source(source_name)