lean2/tests/lean/run/blast_cc3.lean

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open nat
set_option blast.strategy "cc"
constant f (a b : nat) : a > b → nat
constant g : nat → nat
definition tst
(a₁ a₂ b₁ b₂ c d : nat)
(H₁ : a₁ > b₁)
(H₂ : a₂ > b₂) :
a₁ = c → a₂ = c →
b₁ = d → d = b₂ →
g (g (f a₁ b₁ H₁)) = g (g (f a₂ b₂ H₂)) :=
by blast
print tst