I am trying to calculate Correlation energy at CCSD(T)/ cc-pVTZ level (with QChem) but jobs are crashing every time at

"BLOCKING PARAMETERS:

NUM ROCC BLOCKS = 0 NUM AOCC BLOCKS= 2

NUM AVIRT BLOCKS= 23 NUM RVIRT BLOCKS= 0

ORBITALS/BLOCK = 15 14 15 14 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 15 15 15 15 15 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 15 15 15 15 15

BIRREP = A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1 A1" (excerpt from the output file)

which seems a memory issue but it does not make any difference by increasing h_vmem. I don't understand what memory to increase. I have tried some $rem options shown in the input below. Can anyone please see the problem and suggest a solution?

$molecule

0 1

C 4.60034943 -1.85933936 2.94013047

C 4.23844767 -0.15257649 0.65167207

C 5.52965975 2.45088029 0.81745774

C 4.29302311 4.14074898 2.8538456

O 5.52451992 6.54283667 2.89634538

N 8.28079891 2.39056015 1.32091856

C 9.71657467 1.23652339 -0.72620285

H 3.57774282 -3.63672113 2.65763521

H 3.87223792 -0.98919606 4.66811466

H 6.59293318 -2.33137393 3.23069477

H 2.20582056 0.13075015 0.36186364

H 4.91512108 -1.15532184 -1.02976847

H 5.25818205 3.42507195 -0.99562109

H 4.45982933 3.32193065 4.74442196

H 2.29015899 4.45236492 2.44436073

H 7.29388952 6.15561295 2.50961304

H 8.62514496 1.430655 2.95825291

H 9.36019135 2.19147754 -2.52660155

H 9.29688549 -0.77669632 -0.92844135

H 11.73512363 1.41446006 -0.32250068

$end

mol_ID: qm7_4434

$rem

JOB_TYPE = SP

BASIS = cc-pVTZ

EXCHANGE = HF

CORRELATION = CCSD(T)

MAX_SUB_FILE_NUM = 200

AO2MO_DISK = 30000

MEM_TOTAL = 4400

MEM_STATIC = 2400

$end