I tried the query given by you but it's not returning any results.
My requirement is to find the image nodes which don't have product-details.png image rendition.
The logic in your query is saying to return all the renditions other than product-details.png which will not give the correct results.
Suppose one of the renditions folder has this rendition. Due to the above query, all the renditions other than product-details.png under that folder will be there in result which is not the requirement.