How to combine meta_query and post__in in WP_Query

post__in and post__not_in are mutually exclusive.

Note: you cannot combine post__in and post__not_in in the same query.

http://codex.wordpress.org/Class_Reference/WP_Query

Either make the query with post__in and meta_query combination or make the query with post__not_in and meta_query combination. Any of them but not the union of them.