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Proof step 10 from proof validrefs-trans-01 (previous step)

validrefs(str, r ', ty, st), validrefs(str, r ' + refs1, ty0, st) ⊦ validrefs(str, r ' + refs1, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ ¬ validrefs(str, r ' + refs, st[r -- _type] .type, st) → ¬ validrefs(str, r ' + refs, ty, st)
Proof step 9:
¬ ¬ validrefs(str, r ' + refs1, st[r -- _type] .type, st), validrefs(str, r ', ty, st), validrefs(str, r ' + refs1, ty0, st) ⊦ validrefs(str, r ' + refs1, ty, st)

Rule argument

[crewrite-arg: validrefs-sametype , F , [st, ty, refs, r, str] → [st, ty0, refs1, r, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty0, refs1, r, str)]]