Boot Camp Assistant crashed, stuck with ~60GB of unusable space on disk

BCA crashed the first time I ran it, but not until it had resized my OSX partition. I no longer have the available space for running BCA again. I have a 500GB drive, of which the OSX partition takes up 441. There doesn't appear to be another partition in disk utility, but that lost space isn't free space either. When trying to repair or repartition, I get the error:

The provided Core Storage logical volume has an incorrect size. You should run whole-disk repair.

I've done a bit of searching through similar threads, but didn't find any solutions that work for me. Here is the output of some commands from advice given to folks with similar issues:

diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.3 GB
disk0

1: EFI EFI 209.7 MB
disk0s1

2: Apple_CoreStorage Macintosh HD 441.4 GB
disk0s2

3: Apple_Boot Recovery HD 58.6 GB disk0s3

/dev/disk1 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +441.0 GB
disk1

Logical Volume on disk0s2

D96D772B-F3E0-43EF-A895-6D68CA2AECA9

Unlocked Encrypted

diskutil cs list

CoreStorage logical volume groups (1 found)

|

+-- Logical Volume Group 026E274D-9CDE-43AE-BD45-C11F88E68F65

=========================================================

Name: Macintosh HD

Status: Online

Size: 441362964480 B (441.4 GB)

Free Space:
10772480 B (10.8 MB)

|

+-< Physical Volume 10361031-53B4-4698-9090-B0604FCC074C

|
----------------------------------------------------

|
Index: 0

|
Disk: disk0s2

|
Status:
Online

|
Size: 441362964480 B (441.4 GB)

|

+-> Logical Volume Family D9899128-A16C-4F5F-820B-3F67295E7D47

----------------------------------------------------------

Encryption Type: AES-XTS

Encryption Status: Unlocked

Conversion Status: Complete

High Level Queries: Fully Secure

| Passphrase Required

| Accepts New Users

| Has Visible Users

| Has Volume Key

|

+-> Logical Volume D96D772B-F3E0-43EF-A895-6D68CA2AECA9

---------------------------------------------------

Disk: disk1

Status: Online

Size (Total): 440999870464 B (441.0 GB)

Revertible: Yes (unlock and decryption required)

Revert Status: Reboot required

LV Name: Macintosh HD

Volume Name: Macintosh HD

Content Hint: Apple_HFS

sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060

gpt show: /dev/disk0: PMBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 977105059

start size
index
contents

0 1 PMBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1
GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640
862037040 2
GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

862446680
114396200 3
GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

976842880 262147

977105027 32 Sec GPT table

977105059 1 Sec GPT header

I'm definitely in over my head here, and would love a little advice. Thanks!