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Proof step 12 from proof startorfin-reset (previous step)

startorfin(p1, P1) ⊦ startorfin(p1, resetcnt(P1))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ startorfin(p, P0) ↔ (∃ p0. p0 ∈ P0 ∧ (p0.first = p.first ∧ p.last ≤ p0.last ∨ p0.first ≤ p.first ∧ p0.last = p.last))

Rule argument

spec: inst: name:startorfin-def seq: ⊦ startorfin(p, P0) ↔ (∃ p0. p0 ∈ P0 ∧ ( p0.first = p.first ∧ p.last ≤ p0.last ∨ p0.first ≤ p.first ∧ p0.last = p.last)) subst:[P0, p] → [P1, p1] flags:rewrite, current

Additional information

[Concretesimprules(()), Extraterms((P1p1))]