eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee/e.smv

MODULE e
  VAR
    e: { e };
  ASSIGN
    init(e) := e;
    next(e) := e;
    esac;
  SPEC AG ( TRUE -> AF e = e)