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Proof step 4 from proof compatobj-mode (previous step)

st[r -- _type] .type = mkclasstype(class), class+∃(str, class) ⊦ compatfields(str, r, instfields(class), st[_mode, val]) ↔ compatfields(str, r, instfields(class), st), r = jvmref

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ r ≠ jvmref → (compatfields(str, r, instfields(class), st[_mode, val]) ↔ compatfields(str, r, instfields(class), st))

Rule argument

[crewrite-arg: compatfields-mode , F , [val, st, class, r, str] → [val, st, class, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (val, st, class, r, str)]]