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Proof step 5 from proof validref-class-rec (previous step)

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

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
st[r -- mkfs(class, ty0, fieldvar) '] = refval(r0), st[r -- _type] .type ≤ ty, is_obj(str, r, st), mkfs(class, ty0, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), st[r0 -- _type] .type ≤ ty0 ⊦ r = jvmref, r0 = jvmref, junkref(str, r0, st), validref(str, r0, ty0, st)

Rule argument

[emptyarg]

Additional information

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