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Proof step 8 from proof validrefs-put-notin-01 (previous step)

¬ r ≠ r0, okval(val, fs .type), r -- fs ' ∈ st, okval(st[r -- fs '], fs .type), r ∈ st, st[r0 -- _type] .type ≤ ty ⊦ r0 = jvmref, fs ' = _length, fs ' = _type, is_valid_ref(str, r0, st[r -- fs ', val]) ↔ is_valid_ref(str, r0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
okval(val, fs .type), r0 -- fs ' ∈ st, okval(st[r0 -- fs '], fs .type), st[r0 -- _type] .type ≤ ty, r0 ∈ st ⊦ r0 = jvmref, fs ' = _length, fs ' = _type, is_valid_ref(str, r0, st[r0 -- fs ', val]) ↔ is_valid_ref(str, r0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ r -- sk ∈ st → r ∈ st])]]