Question: Problem when reading huge expression from file

I have a big file (~30Mb) with a single algebraic expression (file contains only one string of the form `expr := a*b + ... :` ). I would like to import this expression into Maple and I use `read` function for that:

    read "s.maple":

I wait for 2 hours, but Maple does not response and no any output provided. Is there any special function for import such data?

I use console Maple18 Linux x86 64.

 

Update. All goes fine in Maple 16, so the issue is relevant for Maple17 and Maple18.

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