From abd378e9d8545adb9450b783b3930a10a3b67ab4 Mon Sep 17 00:00:00 2001
From: Nikolaj Bjorner <nbjorner@microsoft.com>
Date: Wed, 22 Apr 2026 18:40:44 -0700
Subject: [PATCH] assert backbone to local context in backbone worker

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

diff --git a/src/smt/smt_parallel.cpp b/src/smt/smt_parallel.cpp
index 6c316fae5..2119ae8b9 100644
--- a/src/smt/smt_parallel.cpp
+++ b/src/smt/smt_parallel.cpp
@@ -182,6 +182,7 @@ namespace smt {
             expr_ref not_e(mk_not(m, e), m);
             if (b.collect_global_backbone(m_l2g, not_e))
                 m_stats.m_backbones_found++;
+            ctx->assert_expr(not_e);
             units.insert(v);
             r = l_undef;
         }