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Proof step 14 from proof validrefs-nopathex (previous step)

¬ ¬ validrefs(str, r ' + refs, st[r -- _type] .type, st), r0 ∈ refs, validrefs(str, r ' + refs, ty, st) ⊦ path∃(str, r, r0, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
validrefs(str, r ' + refs, ty, st), r0 ∈ refs, validrefs(str, r ' + refs, st[r -- _type] .type, st) ⊦ path∃(str, r, r0, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]