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Proof step 20 from proof validrefs-put-statfield (previous step)

fs = mkfs(class, ty1, fieldvar), fs ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- fs ']), validrefs(str, st[r -- fs '] .refval ' + refs, ty1, st), is_obj(str, r, st), st[r -- _type] .type ≤ ty, ∀ str0, ty0, st0, sk0, val0. validrefs(str0, st[r -- fs '] .refval ' + refs, ty0, st0[jvmref -- sk0, val0]) ↔ validrefs(str0, st[r -- fs '] .refval ' + refs, ty0, st0) ⊦ r = jvmref, ∃ fs0. fs0 ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs0 ']) ∧ st[r -- fs '] .refval = st[r -- fs0 '] .refval ∧ validrefs(str, st[r -- fs0 '] .refval ' + refs, fs0 .type, st[jvmref -- sk, val])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 19:
mkfs(class, ty1, fieldvar) ' ∈ instfields(st[r -- _type] .type .class), is_referencevalue(st[r -- mkfs(class, ty1, fieldvar) ']), validrefs(str, st[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty1, st), is_obj(str, r, st), st[r -- _type] .type ≤ ty, ∀ str0, ty0, st0, sk0, val0. validrefs(str0, st[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty0, st0[jvmref -- sk0, val0]) ↔ validrefs(str0, st[r -- mkfs(class, ty1, fieldvar) '] .refval ' + refs, ty0, st0) ⊦ r = jvmref, ∃ fs0. fs0 ' ∈ instfields(st[r -- _type] .type .class) ∧ is_referencevalue(st[r -- fs0 ']) ∧ st[r -- mkfs(class, ty1, fieldvar) '] .refval = st[r -- fs0 '] .refval ∧ validrefs(str, st[r -- fs0 '] .refval ' + refs, fs0 .type, st[jvmref -- sk, val])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]