Wed, 04 Aug 2010 23:27:27 +0200 blanchet Cycle breaking in the bounds takes care of singly recursive datatypes, so we don't need to do it again;
Wed, 04 Aug 2010 22:47:52 +0200 blanchet avoid "<=>" in sym break constraint generation (since these are SAT-unfreundlich) + fix "epsilon2" to "epsilon1" (subtle bug)
Wed, 04 Aug 2010 21:56:17 +0200 blanchet improve datatype symmetry breaking;
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