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Proof step 4 from proof validrefkeynotnull-validrefnotnull (previous step)

rk ∈ st ∧ validrefvalnotnull(str, st[rk], ty1, st) ⊦ validrefnotnull(str, st[rk] .refval, ty1, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
validrefvalnotnull(str, st[rk], ty1, st), rk ∈ st ⊦ validrefnotnull(str, st[rk] .refval, ty1, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]