# SZS status Theorem
# SZS status Theorem
# SZS output start CNFRefutation.
fof(1, conjecture,![X1]:![X2]:(s(t_h4s_lists_list(t_h4s_strings_char),X2)=s(t_h4s_lists_list(t_h4s_strings_char),h4s_lists_append(s(t_h4s_lists_list(t_h4s_strings_char),X2),s(t_h4s_lists_list(t_h4s_strings_char),X1)))<=>s(t_h4s_lists_list(t_h4s_strings_char),X1)=s(t_h4s_lists_list(t_h4s_strings_char),h4s_lists_nil)),file('i/f/string/STRCAT__ACYCLIC_c0', ch4s_strings_STRCATu_u_ACYCLICu_c0)).
fof(26, axiom,![X9]:![X26]:s(t_h4s_lists_list(X9),h4s_lists_append(s(t_h4s_lists_list(X9),X26),s(t_h4s_lists_list(X9),h4s_lists_nil)))=s(t_h4s_lists_list(X9),X26),file('i/f/string/STRCAT__ACYCLIC_c0', ah4s_lists_APPENDu_u_NIL)).
fof(43, axiom,![X9]:![X32]:![X30]:![X31]:(s(t_h4s_lists_list(X9),h4s_lists_append(s(t_h4s_lists_list(X9),X31),s(t_h4s_lists_list(X9),X30)))=s(t_h4s_lists_list(X9),h4s_lists_append(s(t_h4s_lists_list(X9),X31),s(t_h4s_lists_list(X9),X32)))<=>s(t_h4s_lists_list(X9),X30)=s(t_h4s_lists_list(X9),X32)),file('i/f/string/STRCAT__ACYCLIC_c0', ah4s_lists_APPENDu_u_11u_c0)).
# SZS output end CNFRefutation
