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Proof step 8 from proof validref-put-field (previous step)

¬ ( validref(str, r, ty, st) ∧ validref(str, r0, st[r0 -- _type] .type, st) ∧ st[r0 -- _type] .type ≤ mkfs(class, ty1, fieldvar) .type ∧ is_reftype(mkfs(class, ty1, fieldvar) .type)), mkfs(class, ty1, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), st[r0 -- _type] .type ≤ ty1, is_obj(r, st), validref(str, r, ty, st), validref(str, r0, ty0, st) ⊦ r0 = jvmref, validref(str, r, ty, st[r -- mkfs(class, ty1, fieldvar) ', refval(r0)])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 7:
mkfs(class, ty1, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), st[r0 -- _type] .type ≤ ty1, is_obj(r, st), validref(str, r, ty, st), validref(str, r0, ty0, st) ⊦ r0 = jvmref, validref(str, r, ty, st[r -- mkfs(class, ty1, fieldvar) ', refval(r0)]), validref(str, r0, st[r0 -- _type] .type, st) ∧ is_reftype(ty1)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty])]]