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Proof step 10 from proof refine-unmap (previous step)

avol = abs(avols[default-volid]), m < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), default-volid ∈ avols ⊦ ⟨ebm_avol_unmap#(m; avol)⟩ (avol = abs(avols[default-volid][m, unmapped]))

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 11:
avol = abs(avols[default-volid]), m < # avols[default-volid], ebm-cons(avols), ebm-vol-inv(abs(avols[default-volid])), default-volid ∈ avols ⊦ ⟨if m < # avol then avol[m] := unmapped else abort⟩ (avol = abs(avols[default-volid][m, unmapped]))

Rule argument

pos: right 1

Additional information

Used simplifier rules: ebm_avol_unmap#(LNUM; AVOL) {if LNUM < # AVOL then AVOL[LNUM] := unmapped else abort};