GAMS — The Solver Manuals - Available Software

248 DICOPT
--- DICOPT: Checking convergence
--- DICOPT: Search stopped on worsening of NLP subproblems
--- DICOPT: Log File:
Major Major Objective CPU time Itera- Evaluation Solver
Step Iter Function (Sec) tions Errors
NLP 1 5.35021 0.05 8 0 conopt
MIP 1 2.48869 0.28 7 0 cplex
NLP 2 1.72097< 0.00 3 0 conopt
MIP 2 2.17864 0.22 10 0 cplex
NLP 3 1.92310< 0.00 3 0 conopt
MIP 3 1.42129 0.22 12 0 cplex
NLP 4 1.41100 0.00 8 0 conopt
--- DICOPT: Terminating...
--- DICOPT: Stopped on NLP worsening
The search was stopped because the objective function
of the NLP subproblems started to deteriorate.
--- DICOPT: Best integer solution found: 1.923099
--- Restarting execution
--- PROCSEL.GMS(98) 0 Mb
--- Reading solution for model process
*** Status: Normal completion
Notice that the integer solutions are provided by the NLP’s except for major iteration one (the first NLP is
the relaxed NLP). For all NLP’s except the relaxed one, the binary variables are fixed, according to a pattern
determined by the previous MIP which operates on a linearized model. The integer solutions marked with a ’