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Proof step 5 from proof validrefkeynotnull-no-newrefs (conclusion)

⊦ st[r -- sk] .refval = r ∧ newref(r, st) → ¬ validrefkeynotnull(str, r -- sk, ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
st[r -- sk] .refval = r, validrefkeynotnull(str, r -- sk, ty, st), newref(r, st) ⊦ r = jvmref

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ newref(r, st) → r ≠ jvmref])]]