| ri-cons(ri, nodes(gstore, ginval)), key ∈ ri, ∃ key0. key0 ∈ ri -- key ∧ (ri -- key)[key0] = ri[key] ⊦ |
ri[key0] = ri[key], ri-cons(ri, nodes(gstore, ginval)), key ∈ ri, key0 ∈ ri ⊦ key0 = key
Used simplifier rules: key ≠ key0 ⊦ (ri -- key0)[key] = ri[key]; (s)% ⊦ key ∈ ri -- key0 ↔ key ≠ key0 ∧ key ∈ ri; (s)