really fixed syntax bug in DFG output (cf. ef62c2fafa9e)
(*  Title:      HOL/SAT.thy
    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/sat_funcs.ML"
begin
ML {* structure sat = SATFunc(cnf) *}
method_setup sat = {* Scan.succeed (SIMPLE_METHOD' o sat.sat_tac) *}
  "SAT solver"
method_setup satx = {* Scan.succeed (SIMPLE_METHOD' o sat.satx_tac) *}
  "SAT solver (with definitional CNF)"
end