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Proof step 16 from proof spawn-sat-rg-strnger (previous step)

□ Inpf = Inpf', (last ⊃ Po(0)(S) ∧ GInv(S);Gr(0)(S, S') ∧ ¬ blocked ∧ (GInv(S) → GInv(S'))) ⊦ (last ⊃ Poton(0)(S) ∧ GInv(S);Gton(0)(S, S') ∧ ¬ blocked ∧ (GInv(S) → GInv(S')))

User applied rule case distinction

And obtained the following new goals

Rule argument

pos: left 2

Additional information