f513c35742
This PR implements a lookahead feature to reduce the size of the search space in `grind`. It is currently effective only for arithmetic atoms.
22 lines
844 B
Text
22 lines
844 B
Text
reset_grind_attrs%
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set_option grind.warning false
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attribute [grind] Vector.getElem_swap_of_ne
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example (hi : i < n) (hj : j < i) (hk : k < j) (as : Vector α n) (p : α → Prop) (h : p as[k]) :
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p (as.swap i j)[k] := by
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grind (splits := 0)
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example (hi : i < n) (hj : j < i) (hk : k < j) (as : Vector α n) (p : α → Prop) (h : p as[k]) :
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p (as.swap i j)[k] := by
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grind -lookahead
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example (hi : i < n) (hj : j < i) (hk : k < j) (as : Vector α n) (p : α → Prop) (h : p as[k]) :
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p (as.swap i j)[k] := by
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fail_if_success grind (splits := 0) -lookahead -- needs lookahead or case-splits
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sorry
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example (p : Nat → Prop) (h : p j) (h' : ∀ i, i < j → p i) : ∀ i, i < j + 1 → p i := by
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grind
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example (p : Nat → Prop) (h : p j) (h' : ∀ i, i < j → p i) : ∀ i, i < j + 1 → p i := by
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grind (splits := 0)
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