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Proof step 10 from proof crash-neutral-unmap (previous step)

m < # avols[v], ebm-cons(avols0), ebm-cons(avols), v ∈ avols, avols ⊆ avols0 ⊦ (v0 ∈ avols[v, avols[v][m, unmapped]] ↔ v0 ∈ avols0) ∧ ( v0 ∈ avols[v, avols[v][m, unmapped]] → # avols[v, avols[v][m, unmapped]][v0] = # avols0[v0] ∧ ( m0 < # avols[v, avols[v][m, unmapped]][v0] ∧ avols[v, avols[v][m, unmapped]][v0][m0] ≠ unmapped → (avols[v, avols[v][m, unmapped]][v0][m0] = erased → avols0[v0][m0] = erased) ∧ (avols[v, avols[v][m, unmapped]][v0][m0].mapped? → avols0[v0][m0] = avols[v, avols[v][m, unmapped]][v0][m0])))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 11:
⊦ avols0 ⊆ avols1 ↔ (∀ v. (v ∈ avols0 ↔ v ∈ avols1) ∧ ( v ∈ avols0 → # avols0[v] = # avols1[v] ∧ (∀ m. m < # avols0[v] ∧ avols0[v][m] ≠ unmapped → (avols0[v][m] = erased → avols1[v][m] = erased) ∧ (avols0[v][m].mapped? → avols1[v][m] = avols0[v][m]))))
Proof step 12:
m < # avols[v], ebm-cons(avols), ebm-cons(avols0), v ∈ avols, ∀ v. (v ∈ avols ↔ v ∈ avols0) ∧ ( v ∈ avols → # avols[v] = # avols0[v] ∧ (∀ m. m < # avols[v] ∧ avols[v][m] ≠ unmapped → (avols[v][m] = erased → avols0[v][m] = erased) ∧ (avols[v][m].mapped? → avols0[v][m] = avols[v][m]))) ⊦ (v0 ∈ avols[v, avols[v][m, unmapped]] ↔ v0 ∈ avols0) ∧ ( v0 ∈ avols[v, avols[v][m, unmapped]] → # avols[v, avols[v][m, unmapped]][v0] = # avols0[v0] ∧ ( m0 < # avols[v, avols[v][m, unmapped]][v0] ∧ avols[v, avols[v][m, unmapped]][v0][m0] ≠ unmapped → (avols[v, avols[v][m, unmapped]][v0][m0] = erased → avols0[v0][m0] = erased) ∧ (avols[v, avols[v][m, unmapped]][v0][m0].mapped? → avols0[v0][m0] = avols[v, avols[v][m, unmapped]][v0][m0])))

Rule argument

spec: ebm-base name: ebm-le seq: ⊦ avols0 ⊆ avols1 ↔ (∀ v. (v ∈ avols0 ↔ v ∈ avols1) ∧ ( v ∈ avols0 → # avols0[v] = # avols1[v] ∧ (∀ m. m < # avols0[v] ∧ avols0[v][m] ≠ unmapped → ( avols0[v][m] = erased → avols1[v][m] = erased) ∧ ( avols0[v][m].mapped? → avols1[v][m] = avols0[v][m])))) subst: [avols1, avols0] → [avols0, avols] flags: <all paths>

Additional information

Used terms: avols0, avols