message: some simplificaitons
diff: @@ -240,9 +240,8 @@ std::unique_ptr<LinOp> BicgstabFactory<ValueType>::generate(
  auto bicgstab =
  std::unique_ptr<Bicgstab<ValueType>>(Bicgstab<ValueType>::create(
  this->get_executor(), max_iters_, rel_residual_goal_, base));
  - ASSERT_EQUAL_DIMENSIONS(bicgstab->system_matrix_,
  - size(bicgstab->system_matrix_->get_num_cols(),
  - bicgstab->system_matrix_->get_num_rows()));
  + ASSERT_EQUAL_DIMENSIONS(base,
  + size(base->get_num_cols(), base->get_num_rows()));
  return std::move(bicgstab);
  }
  