From 7cf21f041ac2cae198079fca7d26c38e7b4ce3e0 Mon Sep 17 00:00:00 2001
From: Mark Turner <turner@zib.de>
Date: Tue, 21 Apr 2026 14:26:35 +0200
Subject: [PATCH] Reduce shift size in reduced-cost fixing

---
 highs/mip/HighsRedcostFixing.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/highs/mip/HighsRedcostFixing.cpp b/highs/mip/HighsRedcostFixing.cpp
index 3a5720e5b5..8bdac3756b 100644
--- a/highs/mip/HighsRedcostFixing.cpp
+++ b/highs/mip/HighsRedcostFixing.cpp
@@ -245,7 +245,7 @@ void HighsRedcostFixing::addRootRedcost(const HighsMipSolver& mipsolver,
         HighsInt range = direction * (lastBound - bound);
         if (range > maxNumSteps)
           step = (range + maxNumSteps - 1) >> maxNumStepsExp;
-        double shift = direction * (step - 10 * mipsolver.mipdata_->feastol);
+        double shift = direction * (1 - 10 * mipsolver.mipdata_->feastol);
         step *= direction;
 
         for (HighsInt lurkingBound = bound;