#vulnerable code 
                                public MatrixStore<N> getInverse(final DecompositionStore<N> preallocated) {

        if (myInverse == null) {

            final MatrixStore<N> tmpQ1 = this.getQ1();
            final Array1D<Double> tmpSingulars = this.getSingularValues();
            final MatrixStore<N> tmpQ2 = this.getQ2();

            final int tmpRowDim = (int) tmpSingulars.count();
            final int tmpColDim = (int) tmpQ1.countRows();
            final PhysicalStore<N> tmpMtrx = this.makeZero(tmpRowDim, tmpColDim);

            double tmpValue;
            final int rank = this.getRank();
            for (int i = 0; i < rank; i++) {
                tmpValue = tmpSingulars.doubleValue(i);
                for (int j = 0; j < tmpColDim; j++) {
                    tmpMtrx.set(i, j, tmpQ1.toScalar(j, i).conjugate().divide(tmpValue).getNumber());
                }
            }

            preallocated.fillByMultiplying(tmpQ2, tmpMtrx);
            myInverse = preallocated;
        }

        return myInverse;
    } 
                            #location 10 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                                public MatrixStore<N> getInverse(final DecompositionStore<N> preallocated) {

        if (myInverse == null) {

            final MatrixStore<N> tmpQ1 = this.getQ1();
            final Array1D<Double> tmpSingulars = this.getSingularValues();
            final MatrixStore<N> tmpQ2 = this.getQ2();

            final PhysicalStore<N> tmpMtrx = tmpQ2.copy();

            final Scalar.Factory<N> tmpScalar = this.scalar();
            final BinaryFunction<N> tmpDivide = this.function().divide();
            final N tmpZero = tmpScalar.zero().getNumber();

            final int rank = this.getRank();
            for (int i = 0; i < rank; i++) {
                tmpMtrx.modifyColumn(0L, i, tmpDivide.second(tmpScalar.cast(tmpSingulars.doubleValue(i))));
            }
            final long tmpCountColumns = tmpMtrx.countColumns();
            for (int i = rank; i < tmpCountColumns; i++) {
                tmpMtrx.fillColumn(0L, i, tmpZero);
            }

            preallocated.fillByMultiplying(tmpMtrx, tmpQ1.conjugate());
            myInverse = preallocated;
        }

        return myInverse;
    }