Started a long SMART test 24 hours ago, still not finished...

I started a long SMART test on a 3TB WD green drive yesterday. It said it should finish in 483 minutes. I waited that long before checking again, but it hadn't finished. I then tried to run a short test, and it said that another test was in progress with 10% remaining. Now, 14 hours after trying to start a short test, it STILL says 10% remaining.

Here is the output when I pull a report:

RT Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x002f   200   200   051    Pre-fail  Always       -       1
  3 Spin_Up_Time            0x0027   147   145   021    Pre-fail  Always       -       9633
  4 Start_Stop_Count        0x0032   097   097   000    Old_age   Always       -       3001
  5 Reallocated_Sector_Ct   0x0033   200   200   140    Pre-fail  Always       -       0
  7 Seek_Error_Rate         0x002e   200   200   000    Old_age   Always       -       0
  9 Power_On_Hours          0x0032   076   076   000    Old_age   Always       -       17804
10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       195
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       48
193 Load_Cycle_Count        0x0032   124   124   000    Old_age   Always       -       229003
194 Temperature_Celsius     0x0022   126   110   000    Old_age   Always       -       26
196 Reallocated_Event_Count 0x0032   200   200   000    Old_age   Always       -       0
197 Current_Pending_Sector  0x0032   200   200   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0030   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   000    Old_age   Offline      -       0

SMART Error Log Version: 1
No Errors Logged

SMART Self-test log structure revision number 1
No self-tests have been logged.  [To run self-tests, use: smartctl -t]

And the output of trying to start a short self test, which hasn't changed in 14 hours:

=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Can't start self-test without aborting current test (10% remaining),
add '-t force' option to override, or run 'smartctl -X' to abort test.

I'm concerned it got to a really trashed portion of the drive or something and is taking forever to pick through it, or maybe the SMART test just got hung up on something. Any ideas?