No, it's not covered. The short futures contract has already been used up, so to speak, to form the short put position. You should really read up on synthetics.
what I'm trying to tell you is that MTE is correct. as he's made clear your trade is a complicated way of being short a sep call and short a dec put, a strangle spread between sep-dec. that is not a covered position. short a strangle = short vol. the calendar aspect just makes it slightly more complex. think of it another way. you're long es and short es in another month. but you're short two options.