diff --git a/src/model/func_interp.cpp b/src/model/func_interp.cpp
index fb594a09f..90810f294 100644
--- a/src/model/func_interp.cpp
+++ b/src/model/func_interp.cpp
@@ -169,6 +169,7 @@ void func_interp::insert_new_entry(expr * const * args, expr * r) {
            for (unsigned i = 0; i < m_arity; i++) {
                tout << mk_ismt2_pp(args[i], m_manager) << "\n";
            }
+           tout << "Old: " << mk_ismt2_pp(get_entry(args)->get_result(), m_manager) << "\n";
            );
     SASSERT(get_entry(args) == 0);
     func_entry * new_entry = func_entry::mk(m_manager, m_arity, args, r);
diff --git a/src/smt/theory_arith_core.h b/src/smt/theory_arith_core.h
index cde3aa9fd..64aa2b638 100644
--- a/src/smt/theory_arith_core.h
+++ b/src/smt/theory_arith_core.h
@@ -66,6 +66,9 @@ namespace smt {
 
     template<typename Ext>
     bool theory_arith<Ext>::is_int_expr(expr* e) {
+        return m_util.is_int(e);
+#if 0
+        Disable refined integer until equality propagation is fixed.
         if (m_util.is_int(e)) return true;
         if (is_uninterp(e)) return false;
         m_todo.reset();
@@ -93,6 +96,7 @@ namespace smt {
             }
         }
         return true;
+#endif
     }
 
 
diff --git a/src/smt/theory_arith_eq.h b/src/smt/theory_arith_eq.h
index 7ed6cfe50..4a5dad34f 100644
--- a/src/smt/theory_arith_eq.h
+++ b/src/smt/theory_arith_eq.h
@@ -329,6 +329,7 @@ namespace smt {
         if (is_equal(x, y))
             return;
         if (get_manager().get_sort(var2expr(x)) != get_manager().get_sort(var2expr(y))) {
+            TRACE("arith", tout << mk_pp(var2expr(x), get_manager()) << " = " << mk_pp(var2expr(y), get_manager()) << "\n";);
             return;
         }
         context & ctx      = get_context();