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| author | mudathirmahgoub <mudathirmahgoub@gmail.com> | 2020-05-19 16:24:59 -0500 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-05-19 16:24:59 -0500 |
| commit | c8f149fa83fa16f821f37687fedfa778808809bd (patch) | |
| tree | 8808ec522b58c0d8273280923b984a72e0b7bb29 /src/smt | |
| parent | 6bb98062a5578d126db6a3e8cdca083881893b32 (diff) | |
Renamed operator CHOICE to WITNESS (#4207)
Renamed operator CHOICE to WITNESS, and removed it from the front end
Diffstat (limited to 'src/smt')
| -rw-r--r-- | src/smt/term_formula_removal.cpp | 10 | ||||
| -rw-r--r-- | src/smt/term_formula_removal.h | 2 |
2 files changed, 6 insertions, 6 deletions
diff --git a/src/smt/term_formula_removal.cpp b/src/smt/term_formula_removal.cpp index d37ed05e1..1ae125e03 100644 --- a/src/smt/term_formula_removal.cpp +++ b/src/smt/term_formula_removal.cpp @@ -138,9 +138,9 @@ Node RemoveTermFormulas::run(TNode node, std::vector<Node>& output, } } } - else if (node.getKind() == kind::CHOICE) + else if (node.getKind() == kind::WITNESS) { - // If a Hilbert choice function, witness the choice. + // If a witness choice // For details on this operator, see // http://planetmath.org/hilbertsvarepsilonoperator. if (!inQuant) @@ -150,15 +150,15 @@ Node RemoveTermFormulas::run(TNode node, std::vector<Node>& output, { // Make the skolem to witness the choice skolem = nodeManager->mkSkolem( - "choiceK", + "witnessK", nodeType, - "a skolem introduced due to term-level Hilbert choice removal"); + "a skolem introduced due to term-level witness removal"); d_skolem_cache.insert(node, skolem); Assert(node[0].getNumChildren() == 1); // The new assertion is the assumption that the body - // of the choice operator holds for the Skolem + // of the witness operator holds for the Skolem newAssertion = node[1].substitute(node[0][0], skolem); } } diff --git a/src/smt/term_formula_removal.h b/src/smt/term_formula_removal.h index b6456bda6..3b72b46a5 100644 --- a/src/smt/term_formula_removal.h +++ b/src/smt/term_formula_removal.h @@ -112,7 +112,7 @@ public: * This is sometimes called "lambda lifting" * * As an example of (4): - * (choice x. P( x ) ) = t + * (witness x. P( x ) ) = t * becomes * P( k ) ^ k = t * where k is a fresh skolem constant. |