2 * If still have an edge from the startif to endif (AfterNode),
3 * with a if-then-and-else, then rene will see this edge,
4 * and that means that the ctl engine will see this direct path from
5 * startif to endif as a valid execution path. So on this program,
6 * CTL will reject the formula f(X) ... g(X) because
7 * when we take the direct path (which should not exist I repeat),
8 * we can't find a later g(1).
20 // g(1); // if add this then the CTL even with the direct path will this time
21 // accept, but we cheat.