This crashes because the stack overflows quickly in an infinite loop in the
factory library.  If the denominators are removed it doesn't crash, so we might
be giving it bad data.  It's hard to tell.

kk = QQ
R = kk[x,y,z, MonomialOrder => Lex]
J = ideal((5/4)*x^4-3*x^3*y+(83/20)*x^3*z-12*x^2*y^2-(3/10)*x^2*y*z+7*x^2*y+(223/60)*x^2*z^2-(139/30)*x^2*z+51*x*y^3-(1913/30)*x*y^2*z-(77/3)*x*y^2+(143/6)*x*y*z^2+(871/30)*x*y*z-(47/20)*x*z^3-(81/10)*x*z^2-50*y^4+(1538/15)*y^3*z+(70/3)*y^3-(777/10)*y^2*z^2-(186/5)*y^2*z+(129/5)*y*z^3+(197/10)*y*z^2-(19/6)*z^4-(52/15)*z^3,5*x^3-9*x^2*y+(249/20)*x^2*z-24*x*y^2-(3/5)*x*y*z+14*x*y+(223/30)*x*z^2-(139/15)*x*z+51*y^3-(1913/30)*y^2*z-(77/3)*y^2+(143/6)*y*z^2+(871/30)*y*z-(47/20)*z^3-(81/10)*z^2,-3*x^3-24*x^2*y-(3/10)*x^2*z+7*x^2+153*x*y^2-(1913/15)*x*y*z-(154/3)*x*y+(143/6)*x*z^2+(871/30)*x*z-200*y^3+(1538/5)*y^2*z+70*y^2-(777/5)*y*z^2-(372/5)*y*z+(129/5)*z^3+(197/10)*z^2,(83/20)*x^3-(3/10)*x^2*y+(223/30)*x^2*z-(139/30)*x^2-(1913/30)*x*y^2+(143/3)*x*y*z+(871/30)*x*y-(141/20)*x*z^2-(81/5)*x*z+(1538/15)*y^3-(777/5)*y^2*z-(186/5)*y^2+(387/5)*y*z^2+(197/5)*y*z-(38/3)*z^3-(52/5)*z^2)
--J = trim J
decompose J
