Laravel Pretty URL's wont work

I'm trying to remove 'index.php' of my project's url, but nothing works. I've been messing up with my .htaccess for weeks, but nothing.. nothing works! I have no idea of what is wrong. mod_rewrite is indeed enabled. Here's the content of my .htaccess under public dir:

<IfModule mod_rewrite.c>
  RewriteBase /var/www/html/arquivos/index.php/
  <IfModule mod_negotiation.c>
    Options +FollowSymlinks -MultiViews
  </IfModule>

  RewriteEngine On

  # Redirect Trailing Slashes...
  RewriteRule ^(.*)/$ /$1 [L,R=301]

  # Handle Front Controller...
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteRule ^ index.php [L]
</IfModule>

Any suggestions? Thanks.

via Chebli Mohamed