This fix solves the problem with the exception. I tried it with 574613b47583. Can you add it to the repository as I do not have wirte access to that.

Thanks,
Andreas

Lawrence Paulson schrieb:
Thank you for looking there! This is the most plausible culprit. But it is 
strange that this problem has arisen before.

A possible fix is to replace the last line of the function timing_depth_tac in 
that file as follows:

  handle PROVE => Seq.empty | THM _ => Seq.empty;

Andreas, do you want to try this and see if it helps?

Larry

On 27 May 2011, at 15:27, Stefan Berghofer wrote:

Hi Larry and Andreas,

there is another occurrence of gconv_rule in Provers/blast.ML
(in function timing_depth_tac). Since the exception is thrown
when invoking blast, this occurrence of gconv_rule may be the
culprit.


--
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