[Ipopt] ERROR 20 IN ROUTINE g2dHesRowStruct: the NL instruction stack not empty

[Martin Schmidt]

Hi,

I have a curious problem I do not understand. I have a NLP model written 
in GAMS (v. 23.3.3) which I try to solve with Ipopt (v. 3.8).

Thereby I get the following error message:

************************************************************************
--- Starting compilation
--- tmp_S5iQo3(137150) 19 Mb
--- Starting execution: elapsed 0:00:01.036
--- tmp_S5iQo3(92420) 20 Mb
--- Generating NLP model HSsHM_V10_model
--- tmp_S5iQo3(92422) 31 Mb
--- 12,388 rows 22,262 columns 52,928 non-zeroes
--- 176,655 nl-code 18,489 nl-non-zeroes
--- tmp_S5iQo3(92422) 29 Mb
--- Executing IPOPTD: elapsed 0:00:05.601
--- tmp_S5iQo3(92422) 29 Mb

GAMS/IpoptD (Ipopt Library 3.8)
written by A. Waechter
ERROR 20 IN ROUTINE g2dHesRowStruct: the NL instruction stack not empty 
as expected
--- Restarting execution
--- tmp_S5iQo3(92422) 16 Mb
--- Reading solution for model HSsHM_V10_model
--- tmp_S5iQo3(137149) 16 Mb
--- Putfile nlp_results /home/euklid/willert/work/egt/lamatto/tmp_S5iQo3.dat
*** Status: Normal completion
--- Job tmp_S5iQo3 Stop 09/21/11 10:04:34 elapsed 0:00:09.785
************************************************************************

Where is the problem? And how can I resolve it?

Tanks in advance,
Martin Schmidt

-- 
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- Dipl.-Math. Martin Schmidt		  -
- Institut für Angewandte Mathematik	  -
- AG Algorithmische Optimierung		  -
- Leibniz Universität Hannover		  -
- Welfengarten 1, D-30167 Hannover	  -
- Tel.: 0511-762-3873, Fax: 0511-762-3988 -
- E-Mail: mschmidt at ifam.uni-hannover.de	  -
- Web: www.ifam.uni-hannover.de/~mschmidt -
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