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Proof step 63 from proof hasSharing-pathex (previous step)

validrefs(str, r ' + refs0, st[r -- _type] .type, st), hasSharing((r ' + refs0) .last, st) ⊦ hasSharing(r, st)

Heuristic weak cut applied rule cut formula

And obtained the following new goals

Proof step 62:
validrefs(str, r ' + refs0, st[r -- _type] .type, st), hasSharing((r ' + refs0) .last, st) ⊦ refs0 = [], hasSharing(r, st)

Rule argument

[fma-arg: refs0 = []]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ refs + [] = refs], [CSIMPSEQ : ⊦ (refs + refs0) + refs1 = refs + refs0 + refs1], [CSIMPSEQ : ⊦ r ' .last = r])], [EXTRAFMAS : (refs0 = [])]]