Here is the info from an "empty" Verb +R DL media.
HL-DT-ST DVDRAM GSA-4120B A117 (ATA)
Current Profile: DVD+R DL
Disc Information:
Status: Empty
Erasable: No
Free Sectors: 4,173,824
Free Space: 8,547,991,552 bytes
Free Time: 927:32:74 (MM:SS:FF)
Supported Write Speeds: 2.4x
DVD?R DL Boundary Information:
L0 Data Zone Capacity: 2,086,912
Changeable: Yes
Physical Format Information (Last Recorded):
Disc ID: MKM-001-00
Book Type: DVD+R DL
Part Version: 1
Disc Size: 120mm
Maximum Read Rate: Not Specified
Number of Layers: 2
Track Path: Opposite Track Path (OTP)
Linear Density: 0.293 um/bit
Track Density: 0.74 um/track
First Physical Sector of Data Area: 196,608
Last Physical Sector of Data Area: 16,580,607
Last Physical Sector in Layer 0: 2,283,519
Notice the free sectors available?
Now, here is the info from your log.
And then, your file size.
Not much to play with.