DefaultSimulationLooper.java: status message is created by simulation state

build.gradle
    changed dependency for zmt-core to 0.17

build.gradle

@@ -21,7 +21,7 @@ description = "Library for launching ZMT simulations"
 
 dependencies {
     compile group: 'args4j', name: 'args4j', version: '2.+'
-    compile 'de.zmt:zmt-core:0.11.0'
+    compile 'de.zmt:zmt-core:0.17.0'
     
     // configuration needed when converted to project dependency
     testCompile group: 'de.zmt', name: 'zmt-core', version: '0.+', classifier: 'test', configuration: 'test'

src/main/java/de/zmt/launcher/strategies/DefaultSimulationLooper.java

@@ -4,7 +4,6 @@ import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.nio.file.Files;
 import java.nio.file.Path;
-import java.text.NumberFormat;
 import java.time.Duration;
 import java.util.Iterator;
 import java.util.concurrent.ExecutorService;
@@ -29,14 +28,6 @@ class DefaultSimulationLooper implements SimulationLooper {
     private static final Logger logger = Logger.getLogger(DefaultSimulationLooper.class.getName());
 
     private static final double NANO_FACTOR = 1e-09;
-    /** {@link NumberFormat} for simulation step rates. */
-    private static final NumberFormat RATE_FORMAT;
-
-    static {
-        RATE_FORMAT = NumberFormat.getInstance();
-        RATE_FORMAT.setMaximumFractionDigits(5);
-        RATE_FORMAT.setMinimumIntegerDigits(1);
-    }
 
     @Override
     public void loop(ZmtSimState simState, double simTime, int printStatusInterval) {
@@ -119,10 +110,9 @@ class DefaultSimulationLooper implements SimulationLooper {
         while (schedule.step(simState) && schedule.getTime() < simTime) {
             long steps = schedule.getSteps();
             if (printStatusInterval > 0 && steps > 0 && steps % printStatusInterval == 0) {
-                double rate = printStatusInterval / (NANO_FACTOR * (System.nanoTime() - systemTimeLastInterval));
-                logger.info("Job " + job + "/" + jobCount + ": " + "Steps: " + steps + " Time: "
-                        + schedule.getTimestamp("At Start", "Done") + " Rate: " + RATE_FORMAT.format(rate)
-                        + " steps/s");
+                double stepRatePerS = printStatusInterval
+                        / (NANO_FACTOR * (System.nanoTime() - systemTimeLastInterval));
+                logger.info("Job " + job + "/" + jobCount + ": " + simState.createStatusMessage(stepRatePerS));
                 systemTimeLastInterval = System.nanoTime();
             }
         }