From 98fe7f19c5e41f9c4ba971351e6a82c286e86b68 Mon Sep 17 00:00:00 2001
From: Kai Bao <kai.bao@sintef.no>
Date: Fri, 9 Oct 2015 16:16:29 +0200
Subject: [PATCH] not trying to find outlet segment for top segment

---
 opm/autodiff/WellMultiSegment.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/opm/autodiff/WellMultiSegment.cpp b/opm/autodiff/WellMultiSegment.cpp
index 815b9e23a..32fd064cb 100644
--- a/opm/autodiff/WellMultiSegment.cpp
+++ b/opm/autodiff/WellMultiSegment.cpp
@@ -140,7 +140,8 @@ namespace Opm
             assert(perf_count == m_number_of_perforations_);
 
             // update m_inlet_segments_
-            for (int is = 0; is < m_number_of_segments_; ++is) {
+            // top segment does not have a outlet segment
+            for (int is = 1; is < m_number_of_segments_; ++is) {
                 const int index_outlet = m_outlet_segment_[is];
                 m_inlet_segments_[index_outlet].push_back(is);
             }