Excavator 1.4.4a
The way the miner currently runs, I see the following on the screen and in the log.

[[2018-08-04 12:11:22.834962] [thread=0x000031b0] [trace]]

	api | Received: {"params":["Worker [0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1&0&1] for miner Excavator-1-GPU#00-GPU#01 started. "],"id":1,"method":"message"}

I am not sure why this string seems to get longer and longer the more times it is stopped and started but it seems to happen with all of the miners.