The fragments generated from the program: 

LABEL L0
 "

LABEL L1
 "

LABEL $Main$$
SEQ(
 MOVE(
  TEMP t123,
  ESEQ(
   MOVE(
    TEMP t139,
    NAME L1),
   ESEQ(
    SEQ(
     CJUMP(NE,
      MEM(
       ESEQ(
        SEQ(
         MOVE(
          TEMP t140,
          TEMP t139),
         SEQ(
          CJUMP(EQ,
           TEMP t140,
           NAME L1,
           L13,L14),
          SEQ(
           LABEL L13,
           SEQ(
            EXP(
             CALL(
              NAME $NullExit$$)),
            SEQ(
             JUMP(
              NAME L12),
             LABEL L14))))),
        BINOP(PLUS,
         TEMP t140,
         CONST 4))),
      NAME L1,
      L21,L22),
     SEQ(
      LABEL L21,
      SEQ(
       MOVE(
        TEMP t144,
        MEM(
         ESEQ(
          SEQ(
           MOVE(
            TEMP t142,
            MEM(
             ESEQ(
              SEQ(
               MOVE(
                TEMP t141,
                TEMP t139),
               SEQ(
                CJUMP(EQ,
                 TEMP t141,
                 NAME L1,
                 L15,L16),
                SEQ(
                 LABEL L15,
                 SEQ(
                  EXP(
                   CALL(
                    NAME $NullExit$$)),
                  SEQ(
                   JUMP(
                    NAME L12),
                   LABEL L16))))),
              BINOP(PLUS,
               TEMP t141,
               CONST 4)))),
           SEQ(
            CJUMP(EQ,
             TEMP t142,
             NAME L1,
             L17,L18),
            SEQ(
             LABEL L17,
             SEQ(
              EXP(
               CALL(
                NAME $NullExit$$)),
              SEQ(
               JUMP(
                NAME L12),
               LABEL L18))))),
          BINOP(PLUS,
           TEMP t142,
           CONST 0)))),
       SEQ(
        JUMP(
         NAME L23),
        SEQ(
         LABEL L22,
         SEQ(
          MOVE(
           TEMP t144,
           MEM(
            ESEQ(
             SEQ(
              MOVE(
               TEMP t143,
               TEMP t139),
              SEQ(
               CJUMP(EQ,
                TEMP t143,
                NAME L1,
                L19,L20),
               SEQ(
                LABEL L19,
                SEQ(
                 EXP(
                  CALL(
                   NAME $NullExit$$)),
                 SEQ(
                  JUMP(
                   NAME L12),
                  LABEL L20))))),
             BINOP(PLUS,
              TEMP t143,
              CONST 0)))),
          LABEL L23)))))),
    TEMP t144))),
 LABEL L12)