1computing fact1(15) 2in wrapper1-pre: fact(15) 3in wrapper2-pre: fact(14) 4in wrapper1-pre: fact(13) 5in wrapper2-pre: fact(12) 6in wrapper1-pre: fact(11) 7in wrapper2-pre: fact(10) 8in wrapper1-pre: fact(9) 9in wrapper2-pre: fact(8) 10in wrapper1-pre: fact(7) 11in wrapper2-pre: fact(6) 12in wrapper1-pre: fact(5) 13in wrapper2-pre: fact(4) 14in wrapper1-pre: fact(3) 15in wrapper2-pre: fact(2) 16in wrapper1-pre: fact(1) 17