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Proof step 40 from proof validrefs-put-badarrayfield (previous step)

acc .first = st[r -- i '] .refval, is_arraytype(st[r0 -- _type] .type), is_array(str, r, st), st[r -- _type] .type ≤ ty, i < st[r -- _length] .intval, is_referencevalue(st[r -- i ']), validrefs(str, acc, st[r -- _type] .type .type, st[r0 -- fs ', val]), 0 ≤ i, 0 < st[r -- _length] .intval, is_arraytype(st[r0 -- _type] .type) ∧ validrefs(str, acc, st[r -- _type] .type .type, st[r0 -- fs ', val]) → fs ' = _type ∨ fs ' = _length ∨ validrefs(str, acc, st[r -- _type] .type .type, st) ∨ junkref(str, acc .first, st) ⊦ fs ' = _type, fs ' = _length, r = jvmref, acc = [], is_classtype(st[r -- _type] .type), junkref(str, r, st), dups(acc .butlast), r ∈ acc .butlast, validrefs(str, acc, st[r -- _type] .type .type, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 39:
acc .first = st[r -- i '] .refval, is_arraytype(st[r0 -- _type] .type), is_array(str, r, st), st[r -- _type] .type ≤ ty, i < st[r -- _length] .intval, is_referencevalue(st[r -- i ']), validrefs(str, acc, st[r -- _type] .type .type, st[r0 -- fs ', val]), 0 ≤ i, 0 < st[r -- _length] .intval, junkref(str, acc .first, st) ⊦ fs ' = _type, fs ' = _length, r = jvmref, acc = [], is_classtype(st[r -- _type] .type), junkref(str, r, st), dups(acc .butlast), r ∈ acc .butlast, validrefs(str, acc, st[r -- _type] .type .type, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]