diff lib/ur/listPair.urs @ 1242:4ed556678214

At loop heads, havoc relations that might be changed by the loop
author Adam Chlipala <adamc@hcoop.net>
date Sat, 17 Apr 2010 14:26:52 -0400
parents 1c2f335297b7
children 5c30eea7aa78
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