add tactic name

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

src/qe/nlqsat.cpp

@@ -839,6 +839,8 @@ namespace qe {
         ~nlqsat() override {
         }
 
+        char const* name() const override { return "nlqsat"; }
+
         void updt_params(params_ref const & p) override {
             params_ref p2(p);
             p2.set_bool("factor", false);

src/qe/qe_lite.cpp

@@ -2459,6 +2459,8 @@ public:
         m_params(p),
         m_qe(m, p, true) {}
 
+    char const* name() const override { return "qe_lite"; }
+
     tactic * translate(ast_manager & m) override {
         return alloc(qe_lite_tactic, m, m_params);
     }

src/qe/qe_tactic.cpp

@@ -100,6 +100,8 @@ public:
         dealloc(m_imp);
     }
 
+    char const* name() const override { return "qe"; }
+
     void updt_params(params_ref const & p) override {
         m_params = p;
         m_imp->updt_params(p);

src/qe/qsat.cpp

@@ -1257,6 +1257,8 @@ namespace qe {
         ~qsat() override {
             clear();
         }
+
+        char const* name() const override { return "qsat"; }
         
         void updt_params(params_ref const & p) override {
         }