8000 Add handling (just skip) for `!` in forall by moratorium08 · Pull Request #70 · hopv/hoice · GitHub
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Add handling (just skip) for ! in forall #70

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Merged
merged 1 commit into from
Jun 13, 2025
Merged

Add handling (just skip) for ! in forall #70

merged 1 commit into from
Jun 13, 2025

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moratorium08
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I modified the parser so that it can handle !.

Detail

In order to handle smt2 files preprocessed by z3, we have to handle annotations specified by !.
Annotations are used for specifying additional information such as :weight 0, and in a semantical sense, we can just ignore them (as specified in Section 3.6.5, The SMT-LIB Standard: Version 2.6).

One example that contains ! is as follows (generated by z3)

(declare-fun id (Bool Bool Bool Int Int) Bool)
(assert (forall ((A Int) (B Int)) (! (id true true true A B) :weight 0)))
(assert (forall ((A Int) (B Int)) (! (id false true true A B) :weight 0)))
(assert (forall ((A Int) (B Int)) (! (id false false false A B) :weight 0)))
(assert (forall ((A Int)
                 (B Int)
                 (C Int)
                 (D Bool)
                 (E Int)
                 (F Bool)
                 (G Bool)
                 (H Int)
                 (I Int)
                 (J Int))
          (! (let ((a!1 (and (id D false false A B)
                             (or (not F) (= H 0) (not G))
                             (or (not F) (= J 0) (not G))
                             (or (not F) (not G) (= I H))
                             (or (not D) (= C (+ 1 B)))
                             (or (not D) (= E C))
                             (or (not D) (= A (+ (- 1) J)))
                             (or (not D) (= I E))
                             (or (not D) (and F D))
                             (or D (and F G))
                             (or F (not G))
                             (or (not F) (not D) (not (= J 0))))))
               (=> a!1 (id true false false J I)))
             :weight 0)))
(assert (forall ((A Int)) (! (=> (id true false false A 1000) false) :weight 0)))
(check-sat)

@AdrienChampion AdrienChampion self-requested a review October 3, 2024 07:19
@KenSakayori KenSakayori merged commit b65ef1d into hopv:master Jun 13, 2025
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@KenSakayori
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Merged on behalf of @moratorium08

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@AdrienChampion AdrienChampion Awaiting requested review from AdrienChampion

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@moratorium08 @KenSakayori
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