fix #7246

Signed-off-by: Nikolaj Bjorner <[email protected]>
Z3Prover · Jun 6, 2024 · 49610f5 · 49610f5
1 parent 770c51a
commit 49610f5
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/sat/sat_solver.cpp b/src/sat/sat_solver.cpp
@@ -3712,6 +3712,8 @@ namespace sat {
     }
 
     void solver::user_pop(unsigned num_scopes) {
+        if (m_user_scope_literals.empty())
+            return;
         unsigned old_sz = m_user_scope_literals.size() - num_scopes;
         bool_var max_var = m_user_scope_literals[old_sz].var();        
         m_user_scope_literals.shrink(old_sz);