TCE CCSD print "t2" output

I am running a test CCSD/cc-pVTZ job on a neutral Li atom, with an ROHF reference. The job completes fine, but I have a question about the output generated with 'print "t2"' in the tce block.

I see two types of output lines that look important. One is of the form

#1 #2 #3 #4 has been assigned to node X

which looks from the source like specification of the double excitation (#s 1 and 2 particle orbitals, 3 and 4 hole orbitals).

The second line type is more cryptic. An example,

    1    1 -0.8258539073E-04

The second integer in the test run is always "1", but the first runs to 289. I would guess the floats are amplitudes, but what are the integers?

Also, the two line types are interspersed with each other; sometimes the first type of line occurs without the second type, and other times there follows 1+ lines of the second type:

...
 t2
-------------------------

  4  6  3  3 has been assigned to node   0

  4  7  1  1 has been assigned to node   0

  4  7  1  2 has been assigned to node   0

  4  7  1  3 has been assigned to node   0

 t2
-------------------------
    1    1 -0.8258539073E-04

Is this intentional (for example, a 3-->4 + 3-->6 excitation is nonsensical because there is only 1 electron in block 3), or are multiple MPI tasks printing on top of each other?

Thanks