message: removed the 2nd incrementation of iteration-count in bicgstab
diff: @@ -148,7 +148,7 @@ void Bicgstab<ValueType>::apply_impl(const LinOp *b, LinOp *x) const
  tau.get(), starting_tau.get(), parameters_.rel_residual_goal,
  RelativeStoppingId, false, &stopStatus, &all_converged));
  - if (all_converged || ++iter == parameters_.max_iters) {
  + if (all_converged || iter + 1 == parameters_.max_iters) {
  break;
  }
  preconditioner_->apply(s.get(), z.get());
  