function ack(integer, integer) : integer;
function main() : *;

function ack(integer, integer) : integer {
  tmp[0] = 0;
  tmp[1] = arg[0];
  tmp[0] = eq tmp[1] tmp[0];
  br tmp[0] {
    true: {
      tmp[0] = 1;
      tmp[1] = arg[1];
      tmp[0] = add tmp[1] tmp[0];
      ret tmp[0];
    };
    false: {
      tmp[0] = 0;
      tmp[1] = arg[1];
      tmp[0] = eq tmp[1] tmp[0];
      br tmp[0] {
        true: {
          tmp[0] = 1;
          tmp[1] = 1;
          tmp[2] = arg[0];
          tmp[1] = sub tmp[2] tmp[1];
          tcall ack (tmp[1], tmp[0]);
        };
        false: {
          tmp[0] = 1;
          tmp[1] = arg[1];
          tmp[0] = sub tmp[1] tmp[0];
          tmp[1] = arg[0];
          tmp[0] = call ack (tmp[1], tmp[0]), live: (arg[0], arg[1]);
          tmp[1] = 1;
          tmp[2] = arg[0];
          tmp[1] = sub tmp[2] tmp[1];
          tcall ack (tmp[1], tmp[0]);
        };
      };
    };
  };
}

function main() : * {
  tmp[0] = 7;
  tmp[1] = 0;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = 7;
  tmp[1] = 1;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = 13;
  tmp[1] = 1;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = 7;
  tmp[1] = 2;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = 13;
  tmp[1] = 2;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = 4;
  tmp[1] = 3;
  tmp[0] = call ack (tmp[1], tmp[0]);
  trace tmp[0];
  nop;
  tmp[0] = void;
  ret tmp[0];
}