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Proof step 32 from proof validval-put-any (previous step)

sk .fs = mkfs(class0, ty0, fieldvar0), validref(str, r0, ty, st), is_reftype(ty), ∃ i. sk = i ', okval(refval(r2), st[r1 -- _type] .type .type), validref(str, r2, st[r1 -- _type] .type .type, st), r ≠ r1 ∨ _type ≠ sk ⊦ is_arraytype(st[r1 -- _type] .type), ty = void_type, mkfs(class, ty, fieldvar) ' = _length, validref(str, r0, ty, st[r1 -- sk, refval(r2)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 31:
i ' .fs = mkfs(class0, ty0, fieldvar0), validref(str, r0, ty, st), is_reftype(ty), okval(refval(r2), st[r1 -- _type] .type .type), validref(str, r2, st[r1 -- _type] .type .type, st) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, is_arraytype(st[r1 -- _type] .type), validref(str, r0, ty, st[r1 -- i ', refval(r2)])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ _type ≠ i '])]]