digraph CFG {
  node [fontname="Helvetica"];
  n132 [label="START", shape=ellipse, style=filled, color=gray];
  n132 -> n167;
  n167 [label="2", shape=box];
  n167 -> n168;
  n168 [label="3", shape=box];
  n168 -> n169;
  n169 [label="CALL f", shape=box, style=filled, color=orange];
  n169 -> n134;
  n169 -> n171;
  n134 [label="START f(x, y, z)", shape=ellipse, style=filled, color=green];
  n134 -> n137;
  n137 [label="2", shape=box];
  n137 -> n138;
  n138 [label="y = 2", shape=box];
  n138 -> n139;
  n139 [label="3", shape=box];
  n139 -> n140;
  n140 [label="z = 3", shape=box];
  n140 -> n160;
  n160 [label="x", shape=box];
  n160 -> n161;
  n161 [label="CALL g", shape=box, style=filled, color=orange];
  n161 -> n141;
  n161 -> n163;
  n141 [label="START g(x)", shape=ellipse, style=filled, color=green];
  n141 -> n144;
  n144 [label="7", shape=box];
  n144 -> n145;
  n145 [label="x = 7", shape=box];
  n145 -> n146;
  n146 [label="y", shape=box];
  n146 -> n147;
  n147 [label="0", shape=box];
  n147 -> n148;
  n148 [label="y > 0", shape=box];
  n148 -> n149;
  n149 [label="<?>", shape=diamond];
  n149 -> n153 [label="T"];
  n149 -> n157 [label="F"];
  n153 [label="y", shape=box];
  n153 -> n154;
  n154 [label="CALL g", shape=box, style=filled, color=orange];
  n154 -> n141;
  n154 -> n156;
  n156 [label="RET g", shape=box, style=filled, color=orange];
  n156 -> n159;
  n159 [label="x", shape=box];
  n159 -> n142;
  n142 [label="END g(x)", shape=ellipse, style=filled, color=green];
  n142 -> n156;
  n142 -> n163;
  n163 [label="RET g", shape=box, style=filled, color=orange];
  n163 -> n164;
  n164 [label="x", shape=box];
  n164 -> n165;
  n165 [label="g(x) + x", shape=box];
  n165 -> n135;
  n135 [label="END f(x, y, z)", shape=ellipse, style=filled, color=green];
  n135 -> n171;
  n171 [label="RET f", shape=box, style=filled, color=orange];
  n171 -> n133;
  n133 [label="END", shape=ellipse, style=filled, color=gray];
  n157 [label="8", shape=box];
  n157 -> n158;
  n158 [label="x = 8", shape=box];
  n158 -> n159;
}