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Proof step 13 from proof correctness (previous step)

C3.cols = B.cols, C3.rows = A.rows, C4.cols = B.cols, C4.rows = A.rows, C2.cols = B.cols, C2.rows = A.rows, A.cols = B.rows, n < B.cols, m0 < A.rows, n1 < B.cols, k < B.rows, m < A.rows, ∀ m0, n. m0 < A.rows ∧ n < B.cols → C3[m0, n] = C4[m0, n] + (m0 = m ∧ n < n1 ⊃ A[m, k] * B[k, n];0), ∀ m0, n. m0 < A.rows ∧ n < B.cols → C4[m0, n] = C2[m0, n] + (m0 = m ⊃ Σ(k, λ k. A[m, k] * B[k, n]);0), ∀ m1, n0. m1 < A.rows ∧ n0 < B.cols → C2[m1, n0] = (m1 < m ⊃ Σ(B.rows, λ k. A[m1, k] * B[k, n0]);0) ⊦ B.cols = 0, A.rows = 0, B.rows = 0, (m0 = m ∧ n = n1 ⊃ C3[m, n1] + A[m, k] * B[k, n1];C3[m0, n]) = C4[m0, n] + (m0 = m ∧ ¬ n1 < n ⊃ A[m, k] * B[k, n];0)

Heuristic if-then-else split applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 4

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