codeigniter - not work nginx+codigniter configuration -

i using nginx + codigniter server configure server using guide http://www.farinspace.com/codeigniter-nginx-rewrite-rules/

my current configure follow

server {     server_name 165.225.139.129;     root /usr/share/nginx/html;     access_log /var/log/nginx/example.com.access.log;     index index.html index.php index.htm;          # enforce no www        if ($host ~* ^www\.(.*))     {         set $host_without_www $1;         rewrite ^/(.*)$ $scheme://$host_without_www/$1 permanent;     }     # canonicalize codeigniter url end points     # if default controller other "welcome" should change following     if ($request_uri ~* ^(/home(/index)?|/index(.php)?)/?$)     {         rewrite ^(.*)$ / permanent;     }      # removes trailing "index" controllers     if ($request_uri ~* index/?$)     {         rewrite ^/(.*)/index/?$ /$1 permanent;     }      # removes trailing slashes (prevents seo duplicate content issues)     if (!-d $request_filename)     {         rewrite ^/(.+)/$ /$1 permanent;     }      # removes access "system" folder, allows "system.php" controller     if ($request_uri ~* ^/system)     {         rewrite ^/(.*)$ /index.php?/$1 last;         break;     }      # unless request valid file (image, js, css, etc.), send bootstrap     if (!-e $request_filename)     {         rewrite ^/(.*)$ /index.php?/$1 last;         break;     }      # set expiration of assets max caching     location ~* \.(ico|css|js|gif|jpe?g|png)(\?[0-9]+)?$ {         expires max;         log_not_found off;     }      location / {         # check if file exists, or route index.php.         try_files $uri $uri/ /index.php;     }      location /phpmyadmin {                root /usr/share/nginx;                index index.php index.html index.htm;                location ~ ^/phpmyadmin/(.+\.php)$ {                        try_files $uri =404;                        root /usr/share/nginx/;                        fastcgi_pass 127.0.0.1:9000; #                       fastcgi_param https on; # <-- add line                        fastcgi_index index.php;                        fastcgi_param script_filename $document_root$fastcgi_script_name;                        include /etc/nginx/fastcgi_params;                }                location ~* ^/phpmyadmin/(.+\.(jpg|jpeg|gif|css|png|js|ico|html|xml|txt))$ {                        root /usr/share/nginx/;                }         }      location ~* \.php$ {                 fastcgi_pass 127.0.0.1:9000;                 fastcgi_index index.php;                 fastcgi_split_path_info ^(.+\.php)(.*)$;                 include fastcgi_params;                 fastcgi_param script_filename $document_root$fastcgi_script_name;         }  } 

what wrong in configuration

my sample url http://example.com/vts/index.php/sessions/login