% SZS status Theorem for IS__PREFIX__NIL_
% SZS output start Proof for IS__PREFIX__NIL_
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ch4s_richu_u_lists_ISu_u_PREFIXu_u_NILu_c1)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',aHLu_TRUTH)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_richu_u_lists_ISu_u_PREFIXu_c0)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_bools_EQu_u_CLAUSESu_c1)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_lists_listu_u_CASES)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_richu_u_lists_ISu_u_PREFIXu_c1)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',aHLu_BOOLu_CASES)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_sats_dcu_u_eq)).
  file('i/f/rich_list/IS__PREFIX__NIL_c1',ah4s_bools_EQu_u_CLAUSESu_c3)).
% SZS output end Proof for IS__PREFIX__NIL_
