Gurobi 5.0.1 (linux64) logging started Tue Dec 11 04:09:35 2012 Optimize a model with 11910 rows, 11880 columns and 45299 nonzeros Presolve removed 614 rows and 108 columns Presolve time: 0.07s Presolved: 11296 rows, 11772 columns, 44046 nonzeros Variable types: 11069 continuous, 703 integer (703 binary) Root relaxation: objective 2.230882e+05, 1102 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 223088.233 0 28 - 223088.233 - - 0s H 0 0 228281.00000 223088.233 2.27% - 0s H 0 0 224761.00000 223088.233 0.74% - 0s 0 0 223123.184 0 31 224761.000 223123.184 0.73% - 0s 0 0 223127.745 0 39 224761.000 223127.745 0.73% - 0s 0 0 223131.911 0 38 224761.000 223131.911 0.72% - 0s 0 0 223132.276 0 39 224761.000 223132.276 0.72% - 0s 0 2 223142.293 0 39 224761.000 223142.293 0.72% - 0s H 27 27 224611.00000 223157.116 0.65% 8.1 0s H 54 48 223692.00000 223157.116 0.24% 7.1 0s * 128 92 57 223648.00000 223164.730 0.22% 6.6 1s H 254 180 223605.00000 223184.320 0.19% 6.5 1s H 391 279 223573.00000 223187.812 0.17% 6.5 2s H 445 255 223486.00000 223189.305 0.13% 6.3 2s H 528 249 223442.00000 223201.625 0.11% 6.4 2s H 700 169 223357.00000 223209.834 0.07% 6.2 2s 1205 189 223277.085 21 25 223357.000 223250.888 0.05% 6.9 5s Cutting planes: Gomory: 1 Flow cover: 16 Explored 2870 nodes (17389 simplex iterations) in 8.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.233570000000e+05, best bound 2.233346650708e+05, gap 0.0100%