20 lines
664 B
Text
20 lines
664 B
Text
open tactic name list
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definition foo (a : nat) := a + 1 > 0
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definition boo [reducible] (a : nat) := a + 1 > 0
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example : ∀ (a b : nat), foo a → boo a → a + 1 > 0 → foo a :=
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by do
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intro_lst [`_, `_, `H1, `H2, `H3],
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trace_state,
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h1 ← get_local_type `H1,
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h2 ← get_local_type `H2,
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h3 ← get_local_type `H3,
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unify h1 h2,
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unify h2 h3,
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unify h1 h3,
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(unify_core reducible h1 h2 <|> trace "H1 =?= H2 failed if only reducible constants can be unfolded"),
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unify_core reducible h2 h3,
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(unify_core reducible h1 h3 <|> trace "H1 =?= H3 failed if only reducible constants can be unfolded"),
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assumption,
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return ()
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