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Proof step 30 from proof validrefkeynotnull-union (previous step)

rk ∈ st ∧ validrefvalnotnull(str, st[rk], ty, st) ⊦ validrefkeynotnull(str, rk, ty, st0 ∪ st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 29:
validrefvalnotnull(str, st[rk], ty, st), rk ∈ st ⊦ validrefkeynotnull(str, rk, ty, st0 ∪ st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]