graph G {
    compound="true"
    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

    node [
        fixedsize="false"
        fontname="Tahoma"
        color="white"
        fillcolor="deepskyblue2"
        fontcolor="black"
        shape="box"
        style="filled"
        penwidth="1.0"
    ]
    edge [
        fontname="Arial"
        color="#00688b"
        fontcolor="black"
        fontsize="12"
        arrowsize="0.5"
        penwidth="1.0"
    ]




    "[core-cdev.c]" -- "[net.c]" [label=" 8 ", penwidth="8", color="#00688bDB"];
    "[sbp2.c]" -- "[net.c]" [label=" 8 ", penwidth="8", color="#00688bDB"];
    "[core-cdev.c]" -- "[sbp2.c]" [label=" 8 ", penwidth="8", color="#00688bDB"];
    "[net.c]" -- "[core-device.c]" [label=" 7 ", penwidth="7", color="#00688bC9"];
    "[nosy.c]" -- "[core-topology.c]" [label=" 6 ", penwidth="6", color="#00688bB7"];
    "[nosy.c]" -- "[net.c]" [label=" 2 ", penwidth="2", color="#00688b70"];
    "[core-topology.c]" -- "[core-device.c]" [label=" 2 ", penwidth="2", color="#00688b70"];
    "[net.c]" -- "[core-topology.c]" [label=" 2 ", penwidth="2", color="#00688b70"];
    "[nosy.c]" -- "[core-device.c]" [label=" 2 ", penwidth="2", color="#00688b70"];
    "[sbp2.c]" -- "[core-device.c]" [label=" 1 ", penwidth="1", color="#00688b5E"];
    "[core-cdev.c]" -- "[core-device.c]" [label=" 1 ", penwidth="1", color="#00688b5E"];

}