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Proof step 22 from proof validstatfield-subspec-samesubclasses (previous step)

tdname∃(str, class), same-subclasses-contains(ty .jtelemtype .class, str, str0), type∃(str, ty), tdname∃(str, class), mkfs(class, ty, fieldvar) ' ∈ statfields(class), tdname∃(str0, class), initdone(class, st), validfield(str0, jvmref, mkfs(class, ty, fieldvar) ', st) ⊦ goodfieldandtype(jvmref, mkfs(class, ty, fieldvar) ', st) ∧ type∃(str, mkfs(class, ty, fieldvar) ' .fs .type) ∧ mkfs(class, ty, fieldvar) ' .fs .type ≠ void_type ∧ ( is_reftype(mkfs(class, ty, fieldvar) ' .fs .type) → validrefval(str, st[jvmref -- mkfs(class, ty, fieldvar) '], mkfs(class, ty, fieldvar) ' .fs .type, st))

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 21:
same-subclasses-contains(ty .jtelemtype .class, str, str0), type∃(str, ty), tdname∃(str, class), mkfs(class, ty, fieldvar) ' ∈ statfields(class), tdname∃(str0, class), initdone(class, st), validfield(str0, jvmref, mkfs(class, ty, fieldvar) ', st) ⊦ ty = void_type, (is_reftype(ty) → validrefval(str, st[jvmref -- mkfs(class, ty, fieldvar) '], ty, st)) ∧ goodfieldandtype(jvmref, mkfs(class, ty, fieldvar) ', st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ ¬ mkfs (class0, void_type, fieldvar) ' ∈ statfields(class)], [CSIMPSEQ : ⊦ mkfs(class, ty, fieldvar) .type = ty], [CSIMPSEQ : ⊦ fs ' .fs = fs])]]