# SZS status Theorem
# SZS status Theorem
# SZS output start CNFRefutation.
fof(1, conjecture,![X1]:![X2]:![X3]:![X4]:s(X1,h4s_combins_w(s(t_fun(X2,t_fun(X2,X1)),X4),s(X2,X3)))=s(X1,happ(s(t_fun(X2,X1),happ(s(t_fun(X2,t_fun(X2,X1)),X4),s(X2,X3))),s(X2,X3))),file('i/f/combin/W__THM', ch4s_combins_Wu_u_THM)).
fof(6, axiom,![X1]:![X2]:![X3]:![X9]:s(X1,h4s_combins_w(s(t_fun(X2,t_fun(X2,X1)),X3),s(X2,X9)))=s(X1,happ(s(t_fun(X2,X1),happ(s(t_fun(X2,t_fun(X2,X1)),X3),s(X2,X9))),s(X2,X9))),file('i/f/combin/W__THM', ah4s_combins_Wu_u_DEF)).
# SZS output end CNFRefutation
