ok Found
Total speed: 1811 Sol/s
INFO 15:01:17: GPU0 Accepted share 35ms [A:993, R:0]
INFO: Detected new work: d2d1
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Cannot connect to the pool
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Cannot connect to the pool
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Stratum subscribe timeout
INFO: Target: 0003333333333333...
INFO: Detected new work: cce3
CUDA: Device: 0 GeForce GTX 1070, 8112 MB PCI: 0000:01:00.0
CUDA: Device: 1 GeForce GTX 1070, 8113 MB PCI: 0000:03:00.0
CUDA: Device: 2 GeForce GTX 1070, 8113 MB PCI: 0000:04:00.0
CUDA: Device: 3 GeForce GTX 1070, 8113 MB PCI: 0000:05:00.0
CUDA: Device: 1 Selected solver: 0
CUDA: Device: 0 Selected solver: 0
CUDA: Device: 2 Selected solver: 0
CUDA: Device: 3 Selected solver: 0
INFO: Detected new work: cce4
INFO 15:16:20: GPU3 Accepted share 37ms [A:1, R:0]
INFO 15:16:26: GPU3 Accepted share 37ms [A:2, R:0]
Temp: GPU0 53C GPU1 51C GPU2 49C GPU3 51C
GPU0: 457 Sol/s GPU1: 456 Sol/s GPU2: 464 Sol/s GPU3: 454 Sol/s
Total speed: 1831 Sol/s
Total speed: 1811 Sol/s
INFO 15:01:17: GPU0 Accepted share 35ms [A:993, R:0]
INFO: Detected new work: d2d1
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Cannot connect to the pool
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Cannot connect to the pool
ERROR: Lost connection with the server.
INFO: Attempt to restore connection.
ERROR: Stratum subscribe timeout
INFO: Target: 0003333333333333...
INFO: Detected new work: cce3
CUDA: Device: 0 GeForce GTX 1070, 8112 MB PCI: 0000:01:00.0
CUDA: Device: 1 GeForce GTX 1070, 8113 MB PCI: 0000:03:00.0
CUDA: Device: 2 GeForce GTX 1070, 8113 MB PCI: 0000:04:00.0
CUDA: Device: 3 GeForce GTX 1070, 8113 MB PCI: 0000:05:00.0
CUDA: Device: 1 Selected solver: 0
CUDA: Device: 0 Selected solver: 0
CUDA: Device: 2 Selected solver: 0
CUDA: Device: 3 Selected solver: 0
INFO: Detected new work: cce4
INFO 15:16:20: GPU3 Accepted share 37ms [A:1, R:0]
INFO 15:16:26: GPU3 Accepted share 37ms [A:2, R:0]
Temp: GPU0 53C GPU1 51C GPU2 49C GPU3 51C
GPU0: 457 Sol/s GPU1: 456 Sol/s GPU2: 464 Sol/s GPU3: 454 Sol/s
Total speed: 1831 Sol/s
Well, that appears to be the answer to your original question. Your rig stopped mining after 15 hours because the miner lost connectivity to the pool. Either your rig lost connectivity or the pool was down.
Sure zcash.pro was down at 15:00
Thanks