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Proof step 125 from proof validrefs-lastelem (conclusion)

validrefs(str, refs, ty, st) ∧ refs ≠ [] ∧ ¬ has_reffield(refs .last, st) ⊦ ∀ r. ¬ validrefs(str, refs + r ', ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 124:
validrefs(str, refs, ty, st), validrefs(str, refs + r ', ty, st) ⊦ refs = [], has_reffield(refs .last, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]