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Proof step 5 from proof validstatfields-put-statfield-05 (conclusion)

str ≠ str0, str0 ≠ `initstate', str0 ≠ `uninit' ⊦ validstatfields(str2, mkfs(class, ty, ((* str)) .field) ' ' + sks, st[jvmref -- mkfs(class0, ty0, ((* str0)) .field) ', val]) ↔ ¬ ¬ (validstatfield(str2, mkfs(class, ty, str .field) ', st) ∧ validstatfields(str2, sks, st[jvmref -- mkfs(class0, ty0, str0 .field) ', val]))

Special step normalize

And obtained the following new goals

Proof step 4:
str ≠ str0, str0 ≠ `initstate', str0 ≠ `uninit' ⊦ validstatfields(str2, mkfs(class, ty, str .field) ' ' + sks, st[jvmref -- mkfs(class0, ty0, str0 .field) ', val]) ↔ ¬ ¬ (validstatfield(str2, mkfs(class, ty, str .field) ', st) ∧ validstatfields(str2, sks, st[jvmref -- mkfs(class0, ty0, str0 .field) ', val]))