{Method -> {"\"Multifrontal\"", "\"Cholesky\"", "\"Krylov\"", 
   "\"DivisionFreeRowReduction\"", "\"CofactorExpansion\""}, 
 ZeroTest -> {"(N[#1, 200] == 0 & )", "(PossibleZeroQ[Simplify[#1]] & )"}}
