18 lines
566 B
Text
18 lines
566 B
Text
open tactic
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lemma ex1 : let x := 1 in ∀ y, x = y → y = 1 :=
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by using_smt $ smt_tactic.intros >> get_local `x >>= (fun a, trace a)
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open tactic_result
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meta def fail_if_success {α : Type} (t : smt_tactic α) : smt_tactic unit :=
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⟨λ ss ts, match t.run ss ts with
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| success _ _ := failed ts
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| exception _ _ _ := success ((), ss) ts
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end⟩
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def my_smt_config : smt_config :=
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{ pre_cfg := { zeta := tt } }
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lemma ex2 : let x := 1 in ∀ y, x = y → y = 1 :=
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by using_smt_with my_smt_config $ smt_tactic.intros >> fail_if_success (get_local `x) >> return ()
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