$title Test functions in linear models (FUNCS2,SEQ=124) variables z, x; equation obj; obj.. z =e= abs(x) + exp(x) + abs(exp(max(x,1))) + sign(x) ; model m / all /; solve m min z using dnlp; $if NOT errorfree $abort should be OK solve m min z using rmip; $if errorfree $abort should have an error $clearerror $terminate