I called them up

it has 60 calories (for a 12oz)
and 12g carbs
1g sugar alcohols (sorbitol)

Now the guy I spoke with refused to read the ingredients to me, but insisted that somehow the 12g of carbohydrates were all coming from 1g of sugar alcohols I explained to him how 1g and 12g were different and he told me what it was sweetened with.

It does contain maltodextrin, but I think what is adding all those carbs is glycerine.

It contains
Glycerine
Propylene Glycol
Maltodextrin
Malic acid
Sorbitol
Pottassium Phosphate
and sucralose

I am assuming the 1g of sugar alcohols is coming from the sorbitol so the rest would be the other stuff, mostly glycerine. Which may be why he was trying to tell me they were all sugar alcohols.