From f480a893d748b36caeda0e4dd946d2e1c6d226d4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?St=C3=A9phane=20Adjemian=20=28Charybdis=29?=
 <stephane.adjemian@univ-lemans.fr>
Date: Fri, 9 Feb 2018 18:25:44 +0100
Subject: [PATCH] Fixed timing issue in pac_expectation expansion.

---
 ExprNode.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ExprNode.cc b/ExprNode.cc
index 4761633b..fd467154 100644
--- a/ExprNode.cc
+++ b/ExprNode.cc
@@ -7596,7 +7596,7 @@ PacExpectationNode::substitutePacExpectation(map<const PacExpectationNode *, con
           h0_indices.push_back(new_param_symb_id);
           subExpr = datatree.AddPlus(subExpr,
                                      datatree.AddTimes(datatree.AddVariable(new_param_symb_id),
-                                                       datatree.AddVariable(*it, i)));
+                                                       datatree.AddVariable(*it, -i)));
         }
 
   if (nonstationary_vars_present)
@@ -7611,7 +7611,7 @@ PacExpectationNode::substitutePacExpectation(map<const PacExpectationNode *, con
           h1_indices.push_back(new_param_symb_id);
           subExpr = datatree.AddPlus(subExpr,
                                      datatree.AddTimes(datatree.AddVariable(new_param_symb_id),
-                                                       datatree.AddVariable(*it, i)));
+                                                       datatree.AddVariable(*it, -i)));
         }
 
   growth_param_index = datatree.symbol_table.addSymbol(model_name +