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Proof step 35 from proof no-dups-keyset-size (previous step)

# keyset(kar, m0) = m0, kar[m1] = kar[m0], m1 < m0, m1 < # kar, m0 < # kar, m1 + 1 < # kar ⊦ m1 = m0, ∃ m. m < m0 ∧ kar[m0] = kar[m]

Heuristic quantifier closing applied rule exists right

And closed the goal!

Rule argument

pos: right 2 terms: m1

Additional information

Used terms: m1