Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:58:56 2013 Optimize a model with 1200 rows, 28550 columns and 66550 nonzeros Presolve removed 50 rows and 1250 columns Presolve time: 0.12s Presolved: 1150 rows, 27300 columns, 64550 nonzeros Variable types: 27050 continuous, 250 integer (250 binary) Root relaxation: objective 1.959342e+05, 2089 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 195934.242 0 9 - 195934.242 - - 0s 0 0 196016.412 0 9 - 196016.412 - - 0s 0 0 196016.564 0 9 - 196016.564 - - 0s 0 0 196019.733 0 9 - 196019.733 - - 0s 0 0 196021.376 0 9 - 196021.376 - - 0s 0 0 196022.462 0 9 - 196022.462 - - 0s 0 0 196022.514 0 9 - 196022.514 - - 0s 0 0 196022.812 0 9 - 196022.812 - - 0s 0 0 196025.141 0 9 - 196025.141 - - 0s 0 0 196026.275 0 9 - 196026.275 - - 1s 0 0 196026.297 0 9 - 196026.297 - - 1s 0 0 196026.297 0 9 - 196026.297 - - 1s 0 0 196026.297 0 9 - 196026.297 - - 1s 0 0 196026.297 0 9 - 196026.297 - - 1s H 0 0 201111.11831 196026.297 2.53% - 1s 0 2 196134.789 0 9 201111.118 196134.789 2.47% - 1s H 27 11 196569.35034 196257.627 0.16% 23.2 2s * 50 6 16 196564.71930 196543.112 0.01% 24.2 3s Cutting planes: Flow cover: 11 Explored 55 nodes (4732 simplex iterations) in 3.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.965647192958e+05, best bound 1.965589956638e+05, gap 0.0029%