On 18/04/12 1:46 PM, Thomas Sewell wrote: > This is used in our modified version of the Schirmer Hoare VCG. I > suppose that we've released the c-parser sources (which load extra > fold_congs) but not the modified Hoare package (which uses them). The > point is to avoid an exponential time/space explosion when updates of > the form "% rec. rec (| x := rec x + 1 |)" are performed in sequence. > (The problem is the repeated rec.)
The modified Hoare package *is* part of our released c-parser. All this will soon (I have the release candidate running already) be available for use on top of isabelle2011-1 (at the moment, the released code only runs on isabelle2009). Michael
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