# SZS status Theorem
# SZS status Theorem
# SZS output start CNFRefutation.
fof(1, conjecture,![X1]:![X2]:s(t_h4s_options_option(t_h4s_llists_llist(X1)),happ(s(t_fun(t_h4s_llists_llist(X1),t_h4s_options_option(t_h4s_llists_llist(X1))),h4s_llists_ldrop(s(t_h4s_nums_num,h4s_nums_0))),s(t_h4s_llists_llist(X1),X2)))=s(t_h4s_options_option(t_h4s_llists_llist(X1)),h4s_options_some(s(t_h4s_llists_llist(X1),X2))),file('i/f/llist/LDROP__THM_c0', ch4s_llists_LDROPu_u_THMu_c0)).
fof(11, axiom,![X1]:![X2]:s(t_h4s_options_option(t_h4s_llists_llist(X1)),happ(s(t_fun(t_h4s_llists_llist(X1),t_h4s_options_option(t_h4s_llists_llist(X1))),h4s_llists_ldrop(s(t_h4s_nums_num,h4s_nums_0))),s(t_h4s_llists_llist(X1),X2)))=s(t_h4s_options_option(t_h4s_llists_llist(X1)),h4s_options_some(s(t_h4s_llists_llist(X1),X2))),file('i/f/llist/LDROP__THM_c0', ah4s_llists_LDROP0u_c0)).
# SZS output end CNFRefutation
