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Proof step 21 from proof push-corr (previous step)

0 ≤ i0, i→n(i0) + i→n(i1) = n0 + # ar, n0 % # ar = (i→n(i0) + n) % # ar, 0 ≤ (i0 + i1) % n→i(# ar), 0 ≤ i0, i1 ≤ n→i(# ar), i0 < n→i(# ar), inv(mk(ar, n→i(# ar), i0, i1)), i1 < n→i(# ar), inv(mk(ar[n0 % # ar, a], n→i(# ar), i0, i1 + 1)), 0 ≤ i0 + i1, n < i→n(i1), 0 < i1, # ar ≤ n0 ⊦ # ar = 0, ar[n0 % # ar] = a, # ar = 1, i1 = 0, i0 ≤ n→i(# ar) ∧ i→n(i1) < # ar

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 20:
i→n(i0) + i→n(i1) = n0 + # ar, n0 % # ar = (i→n(i0) + n) % # ar, 0 ≤ (i0 + i1) % n→i(# ar), 0 ≤ i0, i1 ≤ n→i(# ar), i0 < n→i(# ar), inv(mk(ar, n→i(# ar), i0, i1)), i1 < n→i(# ar), inv(mk(ar[n0 % # ar, a], n→i(# ar), i0, i1 + 1)), 0 ≤ i0 + i1, n < i→n(i1), 0 < i1, # ar ≤ n0, i0 ≤ n→i(# ar), # ar ≤ i→n(i1) ⊦ # ar = 0, ar[n0 % # ar] = a, # ar = 1, i1 = 0

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ m < n ↔ n ≤ m], [CSIMPSEQ : ⊦ i < j → ¬ j < i], [CSIMPSEQ : ⊦ ¬ i ≤ j ↔ j < i])]]