The treatment of COMP-1 (a.k.a. COMPUTATIONAL-1) and COMP-2 (a.k.a. COMPUTATIONAL-2) is different in IBM DOS/VS COBOL. They are equivalent to FLOAT and DOUBLE, respectively, and they cannot be used with PICTURE phrases.
ACUCOBOL-GT already has a command-line option ("-Df") to specify that COMP-1 and COMP-2 are to be treated as in IBM DOS/VS COBOL. The "-Cv" option automatically turns on this "-Df" option, and so additionally specifying "-Df" is unnecessary.
Take care to observe the proper syntax and usage of COMP-1 and COMP-2 variables for the mode in effect.