From 75962173ff2e1c1b51b99fa42ac88f2d0f2c7998 Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Mon, 12 Aug 2019 09:38:45 -0700
Subject: [PATCH] fix #2481

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 b49987222..c7dee0b70 100644
--- a/src/smt/theory_seq.cpp
+++ b/src/smt/theory_seq.cpp
@@ -5541,6 +5541,9 @@ void theory_seq::assign_eh(bool_var v, bool is_true) {
     else if (m_util.str.is_nth_i(e) || m_util.str.is_nth_u(e)) {
         // no-op
     }
+    else if (m_util.is_skolem(e)) {
+        // no-op
+    }
     else {
         TRACE("seq", tout << mk_pp(e, m) << "\n";);
         UNREACHABLE();