BlockKrylovSchurInitFailure is thrown when the BlockKrylovSchur solver
is unable to generate an initial iterate in the
BlockKrylovSchur::initialize() routine.
This exception is thrown from the BlockKrylovSchur::initialize()
method, which is called by the user or from the
BlockKrylovSchur::iterate() method if isInitialized() == false.
In the case that this exception is thrown,
BlockKrylovSchur::isInitialized() will be false and the user will need
to provide a new initial iterate to the solver.
C++ includes: AnasaziBlockKrylovSchur.hpp