(*  Title:      HOL/SAT.thy

     ID:         $Id$

     Author:     Alwen Tiu, Tjark Weber

     Copyright   2005

 Basic setup for the 'sat' and 'satx' tactic.

 *)

 header {* Reconstructing external resolution proofs for propositional logic *}

 theory SAT imports Refute

 uses

      "Tools/cnf_funcs.ML"

      "Tools/sat_funcs.ML"

 begin

 text {* \medskip Late package setup: default values for refute, see

   also theory @{theory Refute}. *}

 refute_params

  ["itself"=1,

   minsize=1,

   maxsize=8,

   maxvars=10000,

   maxtime=60,

   satsolver="auto"]

 ML {* structure sat = SATFunc(structure cnf = cnf); *}

 method_setup sat = {* Method.no_args (Method.SIMPLE_METHOD' sat.sat_tac) *}

   "SAT solver"

 method_setup satx = {* Method.no_args (Method.SIMPLE_METHOD' sat.satx_tac) *}

   "SAT solver (with definitional CNF)"

 end