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Proof step 59 from proof validrefs-put-notin-02 (previous step)

fs = mkfs(class, ty0, fieldvar), validrefs(str, refs + r0 ', ty, st), okval(val, ty0) ⊦ fs ' = _length, fs ' = _type, validrefs(str, refs + r0 ', ty, st[r -- fs ', val]), r ∈ refs

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 58:
validrefs(str, refs + r0 ', ty, st), okval(val, ty0) ⊦ mkfs(class, ty0, fieldvar) ' = _length, mkfs(class, ty0, fieldvar) ' = _type, validrefs(str, refs + r0 ', ty, st[r -- mkfs(class, ty0, fieldvar) ', val]), r ∈ refs

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]