Recursion with matrix parts

onako (16)
As a part of the project I'm working on, the input matrix needs to be deflated, meaning split into 2 parts. These parts are the upper left and lower right portions of the original matrix, and certain operation needs to be performed there. When in the process of deflation(splitting) we encounter a 1x1` matrix, we should stop and print that matrix. Take a look at the following code:
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void ImplicitQRdeflatedAll(Matrix Dmatrix, VecDouble& EigenValues) {
        if(Dmatrix.rowNo==1) {
         PrintMatrix(Dmatrix);
          return;
        } else {
                 for(int i=1;i<=20;i++) {
                 Dmatrix=forImplicitQR(Dmatrix);
                 if(i%3==0) {
                  int k=checkConvDominant(Dmatrix);
                 if(k!=-1) {
                    std::pair<Matrix, Matrix> myLRpair=deflate(Dmatrix, k);
                   ImplicitQRdeflatedAll(myLRpair.first, EigenValues);
                   ImplicitQRdeflatedAll(myLRpair.second, EigenValues);
                  return;
                }
           }
       }
   }
}

The idea is to print out n(where n is the number of rows/columns of the input matrix) 1x1 matrices, but the code above sometimes reaches n print outs, but more frequently less than n printouts. Any idea why this happens? Thanks
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