s6 = Service.Builder.newInstance("s6").addSizeDimension(0, 1).setCoord(Coordinate.newInstance(0, 7)).build();
s7 = Service.Builder.newInstance("s7").addSizeDimension(0, 1).setCoord(Coordinate.newInstance(0, 8)).build();
vrp = builder.addJob(target).addJob(s2).addJob(s3).addJob(s4).addJob(s5).addJob(s6).addJob(s7).build();
jobDistance = new EuclideanServiceDistance();
}