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Proof step 53 from proof refine-remap (previous step)

m < # avols0[default-volid], ebm-cons(avols0), ebm-vol-inv(abs(avols0[default-volid])), default-volid ∈ avols0, ⌊err0⌋ ⊦ ⟨fail_or_success#(; ; err); avol := abs(avols0[default-volid]); if err = ESUCCESS then avol[m] := mapped(mkbuf(0)) else {skip or avol[m] := unmapped}⟩ (avol = abs(avols0[default-volid][m, unmapped]) ∧ err0 = err)

Heuristic unfold applied rule call right

And obtained the following new goals

Proof step 54:
m < # avols0[default-volid], ebm-cons(avols0), ebm-vol-inv(abs(avols0[default-volid])), default-volid ∈ avols0, ⌊err0⌋ ⊦ ⟨choose err0 with ⌊err0⌋ ∨ err0 = ESUCCESS in err := err0; avol := abs(avols0[default-volid]); if err = ESUCCESS then avol[m] := mapped(mkbuf(0)) else {skip or avol[m] := unmapped}⟩ (avol = abs(avols0[default-volid][m, unmapped]) ∧ err0 = err)

Rule argument

pos: right 1

Additional information

Used simplifier rules: fail_or_success#(; ; ERR) {choose ERR0 with ⌊ERR0⌋ ∨ ERR0 = ESUCCESS in ERR := ERR0};