Smartcrawl URL crawler

Smartcrawl URL crawler stops crawling after 1000 urls in its checkup. My sitemap have more than 3000 URLs, but the URL crawler mentions that just discovered "1000".

I have the following lines added to my wp-config file
define('SMARTCRAWL_FORCE_REWRITE_TITLE', true);
define( 'SMARTCRAWL_SITEMAP_POST_LIMIT', 4000 );