refute
authorwebertj
Thu Mar 11 13:34:13 2004 +0100 (2004-03-11)
changeset 1446472ad5f2a3803
parent 14463 ed09706ecc5d
child 14465 8cc21ed7ef41
refute
NEWS
     1.1 --- a/NEWS	Thu Mar 11 13:03:31 2004 +0100
     1.2 +++ b/NEWS	Thu Mar 11 13:34:13 2004 +0100
     1.3 @@ -139,6 +139,11 @@
     1.4  * ML: the legacy theory structures Int and List have been removed. They had
     1.5    conflicted with ML Basis Library structures having the same names.
     1.6  
     1.7 +* 'refute' command added to search for (finite) countermodels.  Only works
     1.8 +  for a fragment of HOL.  The installation of an external SAT solver is
     1.9 +  highly recommended.  See "HOL/Refute.thy" for details.
    1.10 +
    1.11 +
    1.12  New in Isabelle2003 (May 2003)
    1.13  --------------------------------
    1.14