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Proof step 9 from proof induction-rev-list (previous step)

φ([]), φ(gndx0), ∀ gndx0, gnd. φ(gndx0) → φ(gndx0 + gnd '), ∀ gndx1, φ. # gndx1 < #(gndx0 + gnd ') → φ([]) ∧ (∀ gndx0, gnd. φ(gndx0) → φ(gndx0 + gnd ')) → φ(gndx1) ⊦ φ(gndx0 + gnd ')

Heuristic quantifier closing applied rule all left

And closed the goal!

Rule argument

pos: left 3 terms: gndx0, gnd

Additional information

Used terms: gndx0, gnd