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Proof step 38 from proof validrefs-delcycle-01 (previous step)

∀ str, r, refs0, refs1, ty, st. validrefs(str, acc + r ' + refs0 + r ' + refs1, ty, st) → validrefs(str, acc + r ' + refs1, ty, st), validrefs(str, (r0 + acc) + r ' + refs0 + r ' + refs1, ty, st) ⊦ validrefs(str, (r0 + acc) + r ' + refs1, ty, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 37:
validrefs(str, (r0 ' + acc) + r ' + refs0 + r ' + refs1, ty, st), ∀ str, r, refs0, refs1, ty, st. validrefs(str, acc + r ' + refs0 + r ' + refs1, ty, st) → validrefs(str, acc + r ' + refs1, ty, st) ⊦ validrefs(str, (r0 ' + acc) + r ' + refs1, ty, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r + refs = r ' + refs])]]