Program: 190187
Project: 190187
Buggy source:
protected void flushToEdge(EdgeDraftGetter edgeDraft,Edge edge){
  if (edgeDraft.getColor() != null) {
    edge.getEdgeData().setR(edgeDraft.getColor().getRed() / 255f);
    edge.getEdgeData().setG(edgeDraft.getColor().getGreen() / 255f);
    edge.getEdgeData().setB(edgeDraft.getColor().getBlue() / 255f);
  }
 else {
    edge.getEdgeData().setR(-1f);
    edge.getEdgeData().setG(-1f);
    edge.getEdgeData().setB(-1f);
  }
  if (edgeDraft.getLabel() != null) {
    edge.getEdgeData().setLabel(edgeDraft.getLabel());
  }
  if (edge.getEdgeData().getTextData() != null) {
    edge.getEdgeData().getTextData().setVisible(edgeDraft.isLabelVisible());
  }
  if (edgeDraft.getLabelSize() != -1f && edge.getEdgeData().getTextData() != null) {
    edge.getEdgeData().getTextData().setSize(edgeDraft.getLabelSize());
  }
  if (edgeDraft.getLabelColor() != null && edge.getEdgeData().getTextData() != null) {
    Color labelColor=edgeDraft.getLabelColor();
    edge.getEdgeData().getTextData().setColor(labelColor.getRed() / 255f,labelColor.getGreen() / 255f,labelColor.getBlue() / 255f,labelColor.getAlpha() / 255f);
  }
  if (edgeDraft.getTimeInterval() != null) {
    AttributeColumn col=attributeModel.getEdgeTable().getColumn(DynamicModel.TIMEINTERVAL_COLUMN);
    if (col == null) {
      col=attributeModel.getEdgeTable().addColumn(DynamicModel.TIMEINTERVAL_COLUMN,"String_Node_Str",AttributeType.TIME_INTERVAL,AttributeOrigin.PROPERTY,null);
    }
    edge.getEdgeData().getAttributes().setValue(col.getIndex(),edgeDraft.getTimeInterval());
  }
  if (edge.getEdgeData().getAttributes() != null) {
    AttributeRow row=(AttributeRow)edge.getEdgeData().getAttributes();
    for (    AttributeValue val : edgeDraft.getAttributeRow().getValues()) {
      if (val.getValue() != null) {
        row.setValue(val.getColumn(),val.getValue());
      }
    }
  }
}

Fixed version (ground truth):
protected void flushToEdge(EdgeDraftGetter edgeDraft,Edge edge){
  if (edgeDraft.getColor() != null) {
    edge.getEdgeData().setR(edgeDraft.getColor().getRed() / 255f);
    edge.getEdgeData().setG(edgeDraft.getColor().getGreen() / 255f);
    edge.getEdgeData().setB(edgeDraft.getColor().getBlue() / 255f);
  }
 else {
    edge.getEdgeData().setR(-1f);
    edge.getEdgeData().setG(-1f);
    edge.getEdgeData().setB(-1f);
  }
  if (edgeDraft.getLabel() != null) {
    edge.getEdgeData().setLabel(edgeDraft.getLabel());
  }
  if (edge.getEdgeData().getTextData() != null) {
    edge.getEdgeData().getTextData().setVisible(edgeDraft.isLabelVisible());
  }
  if (edgeDraft.getLabelSize() != -1f && edge.getEdgeData().getTextData() != null) {
    edge.getEdgeData().getTextData().setSize(edgeDraft.getLabelSize());
  }
  if (edgeDraft.getLabelColor() != null && edge.getEdgeData().getTextData() != null) {
    Color labelColor=edgeDraft.getLabelColor();
    edge.getEdgeData().getTextData().setColor(labelColor.getRed() / 255f,labelColor.getGreen() / 255f,labelColor.getBlue() / 255f,labelColor.getAlpha() / 255f);
  }
  if (edgeDraft.getTimeInterval() != null) {
    AttributeColumn col=attributeModel.getEdgeTable().getColumn(DynamicModel.TIMEINTERVAL_COLUMN);
    if (col == null) {
      col=attributeModel.getEdgeTable().addColumn(DynamicModel.TIMEINTERVAL_COLUMN,"String_Node_Str",AttributeType.TIME_INTERVAL,AttributeOrigin.PROPERTY,null);
    }
    edge.getEdgeData().getAttributes().setValue(col.getIndex(),edgeDraft.getTimeInterval());
  }
  if (edge.getEdgeData().getAttributes() != null) {
    AttributeRow row=(AttributeRow)edge.getEdgeData().getAttributes();
    for (    AttributeValue val : edgeDraft.getAttributeRow().getValues()) {
      if (!val.getColumn().getOrigin().equals(AttributeOrigin.PROPERTY) && val.getValue() != null) {
        row.setValue(val.getColumn(),val.getValue());
      }
    }
  }
}