# SZS status Theorem
# SZS status Theorem
# SZS output start CNFRefutation.
fof(1, conjecture,![X1]:![X2]:(p(s(t_bool,h4s_lists_null(s(t_h4s_lists_list(X1),X2))))<=>s(t_h4s_nums_num,h4s_lists_length(s(t_h4s_lists_list(X1),X2)))=s(t_h4s_nums_num,h4s_nums_0)),file('i/f/list/NULL__LENGTH', ch4s_lists_NULLu_u_LENGTH)).
fof(8, axiom,![X1]:![X2]:(s(t_h4s_nums_num,h4s_lists_length(s(t_h4s_lists_list(X1),X2)))=s(t_h4s_nums_num,h4s_nums_0)<=>s(t_h4s_lists_list(X1),X2)=s(t_h4s_lists_list(X1),h4s_lists_nil)),file('i/f/list/NULL__LENGTH', ah4s_lists_LENGTHu_u_NIL)).
fof(9, axiom,![X1]:![X2]:(p(s(t_bool,h4s_lists_null(s(t_h4s_lists_list(X1),X2))))<=>s(t_h4s_lists_list(X1),X2)=s(t_h4s_lists_list(X1),h4s_lists_nil)),file('i/f/list/NULL__LENGTH', ah4s_lists_NULLu_u_EQ)).
# SZS output end CNFRefutation
