* ==== TYPE: ADV-MATCH-FAKE ====
      * FEATURE: Falso matching: simple ADD program but
      *          has WS-KEY variable to trick classifier
      * STATEMENT: ADD
      * BRANCHES: 2, DECISIONS: 1
      * ADVERSARIAL: Non-matching program with WS-KEY var
       IDENTIFICATION DIVISION.
       PROGRAM-ID. FAKEMT.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01 WS-KEY      PIC 9(5) VALUE 0.
       01 WS-TOTAL    PIC 9(5) VALUE 0.
       01 WS-VAL      PIC 9(5) VALUE 100.
       PROCEDURE DIVISION.
       MAIN.
           MOVE 999 TO WS-KEY.
           ADD WS-KEY TO WS-VAL GIVING WS-TOTAL.
           IF WS-TOTAL > 500
               DISPLAY 'LARGE'
           ELSE
               DISPLAY 'SMALL'.
           STOP RUN.