diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/io/VehicleRoutingAlgorithms.java b/jsprit-core/src/main/java/jsprit/core/algorithm/io/VehicleRoutingAlgorithms.java
index 61abdda8..e53aaf67 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/io/VehicleRoutingAlgorithms.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/io/VehicleRoutingAlgorithms.java
@@ -392,12 +392,12 @@ public class VehicleRoutingAlgorithms {
 	 * @return {@link VehicleRoutingAlgorithm}
 	 */
 	public static VehicleRoutingAlgorithm createAlgorithm(final VehicleRoutingProblem vrp, final AlgorithmConfig algorithmConfig){
-		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0);
+		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0, null);
 	}
 	
 	@Deprecated
 	public static VehicleRoutingAlgorithm readAndCreateAlgorithm(final VehicleRoutingProblem vrp, final XMLConfiguration config){
-		return createAlgo(vrp,config,0);
+		return createAlgo(vrp,config,0, null);
 	}
 	
 	/**
@@ -411,7 +411,7 @@ public class VehicleRoutingAlgorithms {
 		AlgorithmConfig algorithmConfig = new AlgorithmConfig();
 		AlgorithmConfigXmlReader xmlReader = new AlgorithmConfigXmlReader(algorithmConfig);
 		xmlReader.read(configURL);
-		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0);
+		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0, null);
 	}
 	
 	/**
@@ -425,17 +425,26 @@ public class VehicleRoutingAlgorithms {
 		AlgorithmConfig algorithmConfig = new AlgorithmConfig();
 		AlgorithmConfigXmlReader xmlReader = new AlgorithmConfigXmlReader(algorithmConfig);
 		xmlReader.read(configFileName);
-		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0);
+		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0, null);
+	}
+
+	public static VehicleRoutingAlgorithm readAndCreateAlgorithm(final VehicleRoutingProblem vrp, final String configFileName, StateManager stateManager){
+		AlgorithmConfig algorithmConfig = new AlgorithmConfig();
+		AlgorithmConfigXmlReader xmlReader = new AlgorithmConfigXmlReader(algorithmConfig);
+		xmlReader.read(configFileName);
+		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),0, stateManager);
 	}
 	
 	public static VehicleRoutingAlgorithm readAndCreateAlgorithm(VehicleRoutingProblem vrp, int nThreads, String configFileName) {
 		AlgorithmConfig algorithmConfig = new AlgorithmConfig();
 		AlgorithmConfigXmlReader xmlReader = new AlgorithmConfigXmlReader(algorithmConfig);
 		xmlReader.read(configFileName);
-		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),nThreads);
+		return createAlgo(vrp,algorithmConfig.getXMLConfiguration(),nThreads, null);
 	}
+	
+	
 
-	private static VehicleRoutingAlgorithm createAlgo(final VehicleRoutingProblem vrp, XMLConfiguration config, int nuOfThreads){
+	private static VehicleRoutingAlgorithm createAlgo(final VehicleRoutingProblem vrp, XMLConfiguration config, int nuOfThreads, StateManager stateMan){
 		
 		
 		// map to store constructed modules
@@ -484,7 +493,13 @@ public class VehicleRoutingAlgorithms {
 		final VehicleFleetManager vehicleFleetManager = createFleetManager(vrp);
 		
 		//create state-manager
-		final StateManager stateManager = new StateManager(vrp);
+		final StateManager stateManager;
+		if(stateMan!=null) {
+			stateManager = stateMan;
+		}
+		else{
+			stateManager = 	new StateManager(vrp);
+		}
 		stateManager.updateLoadStates();
 		stateManager.updateTimeWindowStates();
 		
diff --git a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
index 16ebe471..9fa9a2f1 100644
--- a/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
+++ b/jsprit-core/src/main/java/jsprit/core/algorithm/state/StateManager.java
@@ -71,6 +71,10 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 	
 	private VehicleRoutingProblem vrp;
 	
+	private boolean updateLoad = false;
+	
+	private boolean updateTWs = false;
+	
 	public StateManager(VehicleRoutingProblem vrp) {
 		super();
 		this.vrp = vrp;
@@ -276,16 +280,22 @@ public class StateManager implements RouteAndActivityStateGetter, IterationStart
 		insertionListeners.informInsertionEndsListeners(vehicleRoutes);
 	}
 	
-	 public void updateLoadStates() {
-         UpdateLoads updateLoads = new UpdateLoads(this);
-         addActivityVisitor(updateLoads);
-         addListener(updateLoads);
-         addActivityVisitor(new UpdatePrevMaxLoad(this));
-         addActivityVisitor(new UpdateMaxLoad(this));
-         addActivityVisitor(new UpdateMaxLoad_(this));
- }
+	public void updateLoadStates() {
+		if(!updateLoad){
+			updateLoad=true;
+			UpdateLoads updateLoads = new UpdateLoads(this);
+			addActivityVisitor(updateLoads);
+			addListener(updateLoads);
+			addActivityVisitor(new UpdatePrevMaxLoad(this));
+			addActivityVisitor(new UpdateMaxLoad(this));
+			addActivityVisitor(new UpdateMaxLoad_(this));
+		}
+	}
 
- public void updateTimeWindowStates() {
-         addActivityVisitor(new UpdateTimeWindow(this, vrp.getTransportCosts()));
- }
+	public void updateTimeWindowStates() {
+		if(!updateTWs){
+			updateTWs=true;
+			addActivityVisitor(new UpdateTimeWindow(this, vrp.getTransportCosts()));
+		}
+	}
 }