% SZS status Theorem for APPEND__NIL_
% SZS output start Proof for APPEND__NIL_
  file('i/f/rich_list/APPEND__NIL_c1',ch4s_richu_u_lists_APPENDu_u_NILu_c1)).
  file('i/f/rich_list/APPEND__NIL_c1',ah4s_lists_APPEND0u_c0)).
% SZS output end Proof for APPEND__NIL_
