graph {
    graph [pad="0.5", nodesep="1", ranksep="1"];
    plus [ label="ID_plus", xlabel="exprt" ];
    const3 [ label="ID_constant", xlabel="exprt" ];
    const5 [ label="ID_constant", xlabel="exprt" ];
    val3 [ label="3", xlabel="dstringt" ];
    val5 [ label="5", xlabel="dstringt" ];
    ID_integer [ xlabel="typet" ];
    type3 [ label="ID_integer", xlabel="typet" ];
    type5 [ label="ID_integer", xlabel="typet" ];
    plus -- const3 [ label="sub[0]" ];
    plus -- const5 [ label="sub[1]" ];
    plus -- ID_integer [ label="named_sub[ID_type]" ];
    const3 -- val3 [ label="sub[ID_value]" ];
    const3 -- type3 [ label="sub[ID_type]" ];
    const5 -- val5 [ label="sub[ID_value]" ];
    const5 -- type5 [ label="sub[ID_type]" ];
}
