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Proof step 79 from proof spawn-sat-rg-strnger (previous step)

□ (Outf = Outf' ∧ Inpf = Inpf'), ∀ m. m ≤ n0 + 1 → Ry(m)(S', S''), GInv(S') → GInv(S''), ¬ Ry(n0 + 1)(S', S'') ∨ ¬(m ≤ n0 → Ry(m)(S', S'')) ⊦

User applied rule case distinction

And obtained the following new goals

Proof step 80:
□ (Outf = Outf' ∧ Inpf = Inpf'), ∀ m. m ≤ n0 + 1 → Ry(m)(S', S''), GInv(S') → GInv(S''), ¬ Ry(n0 + 1)(S', S'') ⊦
Proof step 81:
□ (Outf = Outf' ∧ Inpf = Inpf'), ∀ m. m ≤ n0 + 1 → Ry(m)(S', S''), GInv(S') → GInv(S''), ¬(m ≤ n0 → Ry(m)(S', S'')) ⊦

Rule argument

pos: left 4

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