Malformed or complex PDFs cause an out-of-memory exception.

The program fails with an out-of-memory exception when processing some particularly complex pdfs. The memory requirement can be quite large, exceeding 10 GB for a single pdf of relatively small filesize, thus failing regardless of the amount of memory assigned to the jvm.

A temporary work-around is use a script to process just one pdf at a time (while catching memory exceptions), however a lot of time is lost to repeatedly firing up and closing the jvm.

A more desirable behaviour would be for pdffigures to abort the current pdf after a predefined memory usage is exceeded and proceed with others.