arrays (#4684)

* arrays Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * arrays Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * arrays Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * fill Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * update drat and fix euf bugs Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * const qualifiers Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * na Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * reorg ba Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * reorg Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com> * build warnings Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2025-04-28 19:35:50 +00:00 · 2020-09-13 19:29:59 -07:00 · 2020-09-13 19:29:59 -07:00 · 796e2fd9eb
commit 796e2fd9eb
parent d56dd1db7b
79 changed files with 2571 additions and 1850 deletions
--- a/src/sat/smt/ba_constraint.cpp
+++ b/src/sat/smt/ba_constraint.cpp
@ -0,0 +1,58 @@
+/*++
+Copyright (c) 2017 Microsoft Corporation
+
+Module Name:
+
+    ba_constraint.cpp
+
+Abstract:
+ 
+    Interface for constraints.
+
+Author:
+
+    Nikolaj Bjorner (nbjorner) 2017-01-30
+
+--*/
+
+#include "sat/smt/ba_constraint.h"
+
+namespace ba {
+
+    unsigned constraint::fold_max_var(unsigned w) const {
+        if (lit() != sat::null_literal) w = std::max(w, lit().var());
+        for (unsigned i = 0; i < size(); ++i) w = std::max(w, get_lit(i).var());
+        return w;
+    }
+
+    std::ostream& operator<<(std::ostream& out, constraint const& cnstr) {
+        if (cnstr.lit() != sat::null_literal) out << cnstr.lit() << " == ";
+        return cnstr.display(out);
+    }
+
+    bool constraint::is_watched(solver_interface const& s, literal lit) const {
+        return s.get_wlist(~lit).contains(sat::watched(cindex()));
+    }
+
+    void constraint::unwatch_literal(solver_interface& s, literal lit) {
+        sat::watched w(cindex());
+        s.get_wlist(~lit).erase(w);
+        SASSERT(!is_watched(s, lit));
+    }
+
+    void constraint::watch_literal(solver_interface& s, literal lit) {
+        if (is_pure() && lit == ~this->lit()) return;
+        SASSERT(!is_watched(s, lit));
+        sat::watched w(cindex());
+        s.get_wlist(~lit).push_back(w);
+    }
+
+    void constraint::nullify_tracking_literal(solver_interface& s) {
+        if (lit() != sat::null_literal) {
+            unwatch_literal(s, lit());
+            unwatch_literal(s, ~lit());
+            nullify_literal();
+        }
+    }
+
+}