got rid of duplicate functionality ("run_smt_solver_somehow");
added minimization command to SMT solver message
(* Title: HOLCF/IOA/ABP/Action.thy
Author: Olaf Müller
*)
header {* The set of all actions of the system *}
theory Action
imports Main
begin
datatype action = New | Loc nat | Free nat
lemma [cong]: "!!x. x = y ==> action_case a b c x = action_case a b c y"
by simp
end