From 1664f2d338b70bdba90ff6414a718912001f0409 Mon Sep 17 00:00:00 2001
From: muzuro <zufarm@gmail.com>
Date: Tue, 1 Sep 2015 18:44:39 +0300
Subject: [PATCH] don`t build initial solution if algorithm has one

---
 .../java/jsprit/core/algorithm/PrettyAlgorithmBuilder.java    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/PrettyAlgorithmBuilder.java b/jsprit-core/src/main/java/jsprit/core/algorithm/PrettyAlgorithmBuilder.java
index 41b33089..c394bf40 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/PrettyAlgorithmBuilder.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/PrettyAlgorithmBuilder.java
@@ -136,7 +136,9 @@ public class PrettyAlgorithmBuilder {
             vra.addListener(new AlgorithmStartsListener() {
                 @Override
                 public void informAlgorithmStarts(VehicleRoutingProblem problem, VehicleRoutingAlgorithm algorithm, Collection<VehicleRoutingProblemSolution> solutions) {
-                    solutions.add(new InsertionInitialSolutionFactory(iniInsertionStrategy, iniObjFunction).createSolution(vrp));
+                    if (solutions.isEmpty()) {
+                        solutions.add(new InsertionInitialSolutionFactory(iniInsertionStrategy, iniObjFunction).createSolution(vrp));
+                    }
                 }
             });
         }