# SZS status Theorem
# SZS status Theorem
# SZS output start CNFRefutation.
fof(1, conjecture,![X1]:![X2]:s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_sub(s(t_h4s_extreals_extreal,X2),s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_ainv(s(t_h4s_extreals_extreal,X1)))))=s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_add(s(t_h4s_extreals_extreal,X2),s(t_h4s_extreals_extreal,X1))),file('i/f/extreal/sub__rneg', ch4s_extreals_subu_u_rneg)).
fof(19, axiom,![X1]:![X2]:s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_sub(s(t_h4s_extreals_extreal,X2),s(t_h4s_extreals_extreal,X1)))=s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_add(s(t_h4s_extreals_extreal,X2),s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_ainv(s(t_h4s_extreals_extreal,X1))))),file('i/f/extreal/sub__rneg', ah4s_extreals_extrealu_u_subu_u_add)).
fof(22, axiom,![X2]:s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_ainv(s(t_h4s_extreals_extreal,h4s_extreals_extrealu_u_ainv(s(t_h4s_extreals_extreal,X2)))))=s(t_h4s_extreals_extreal,X2),file('i/f/extreal/sub__rneg', ah4s_extreals_negu_u_neg)).
# SZS output end CNFRefutation
