From 7d4c9e612638ef2ea0e7d5f430a43718c2c4082e Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Sun, 31 May 2020 12:40:04 -0700
Subject: [PATCH] fix #4480

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
---
 src/smt/theory_seq.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/smt/theory_seq.cpp b/src/smt/theory_seq.cpp
index d2c4d93e6..a537f2678 100644
--- a/src/smt/theory_seq.cpp
+++ b/src/smt/theory_seq.cpp
@@ -3125,6 +3125,9 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
     else if (m_util.is_skolem(e)) {
         
         // no-op
+    }
+    else if (m_util.str.is_is_digit(e)) {
+	
     }
     else {
         TRACE("seq", tout << mk_pp(e, m) << "\n";);