digraph CFG {
  node [fontname="Helvetica"];
  n997 [label="START", shape=box];
  n997 -> n1020;
  n1020 [label="10", shape=box];
  n1020 -> n1021;
  n1021 [label="8", shape=box];
  n1021 -> n1022;
  n1022 [label="CALL func", shape=box, style=filled, color=orange];
  n1022 -> n999;
  n999 [label="START func(a, b)", shape=box, style=filled, color=green];
  n999 -> n1002;
  n1002 [label="a", shape=box];
  n1002 -> n1003;
  n1003 [label="0", shape=box];
  n1003 -> n1004;
  n1004 [label="a > 0", shape=box];
  n1004 -> n1005;
  n1005 [label="b", shape=box];
  n1005 -> n1006;
  n1006 [label="a", shape=box];
  n1006 -> n1007;
  n1007 [label="b != a", shape=box];
  n1007 -> n1008;
  n1008 [label="(a > 0) && (b != a)", shape=box];
  n1008 -> n1009;
  n1009 [label="<?>", shape=diamond];
  n1009 -> n1000 [label="T"];
  n1000 [label="END func(a, b)", shape=box, style=filled, color=green];
  n1000 -> n1024;
  n1024 [label="RET func", shape=box, style=filled, color=orange];
  n1009 -> n1011 [label="F"];
  n1011 [label="b", shape=box];
  n1011 -> n1012;
  n1012 [label="1", shape=box];
  n1012 -> n1013;
  n1013 [label="b + 1", shape=box];
  n1013 -> n1014;
  n1014 [label="b = (b + 1)", shape=box];
  n1014 -> n1015;
  n1015 [label="a", shape=box];
  n1015 -> n1016;
  n1016 [label="1", shape=box];
  n1016 -> n1017;
  n1017 [label="a - 1", shape=box];
  n1017 -> n1018;
  n1018 [label="a = (a - 1)", shape=box];
  n1018 -> n1004;
  n1022 -> n1024;
}