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Proof step 3 from proof validref-forward-01 (previous step)

fs = mkfs(class0, ty, fieldvar), is_reftype(ty), fs ' ∈ instfields(class), validref(str, r, mkclasstype(class), st0) ⊦ r = jvmref, validref(str, st0[r -- fs '] .refval, ty, st0)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 2:
is_reftype(ty), mkfs(class0, ty, fieldvar) ' ∈ instfields(class), validref(str, r, mkclasstype(class), st0) ⊦ r = jvmref, validref(str, st0[r -- mkfs(class0, ty, fieldvar) '] .refval, ty, st0)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]