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small perf change

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This commit is contained in:
Simon Cruanes 2015-02-06 17:47:29 +01:00
parent ce8920bf88
commit c2cfa14e86
1 changed files with 4 additions and 4 deletions
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8
solver/res.ml
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@ -273,14 +273,14 @@ module Make(St : Solver_types.S) = struct
aux (to_list c, to_list d)
let unsat_core proof =
let rec aux proof =
let rec aux acc proof =
let p = proof () in
match p.step with
| Hypothesis | Lemma _ -> [p.conclusion]
| Hypothesis | Lemma _ -> p.conclusion :: acc
| Resolution (proof1, proof2, _) ->
List.rev_append (aux proof1) (aux proof2)
aux (aux acc proof1) proof2
in
List.sort_uniq compare_cl (aux proof)
List.sort_uniq compare_cl (aux [] proof)
(* Print proof graph *)
let _i = ref 0