Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:41:19 2013 Optimize a model with 1280 rows, 7040 columns and 16020 nonzeros Presolve removed 40 rows and 60 columns Presolve time: 0.08s Presolved: 1240 rows, 6980 columns, 13960 nonzeros Variable types: 6000 continuous, 980 integer (980 binary) Root relaxation: objective 4.636776e+04, 550 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46367.7551 0 2 - 46367.7551 - - 0s 0 0 46379.2166 0 4 - 46379.2166 - - 0s 0 0 46379.7236 0 4 - 46379.7236 - - 0s 0 0 46379.7236 0 4 - 46379.7236 - - 0s 0 2 46380.9366 0 4 - 46380.9366 - - 0s * 51 38 45 46829.298444 46427.0861 0.86% 8.0 0s H 80 40 46780.928248 46444.1582 0.72% 13.5 0s * 130 40 16 46761.211636 46459.0499 0.65% 14.9 0s * 155 37 16 46743.405890 46473.3323 0.58% 14.9 0s * 167 38 15 46737.777568 46488.9083 0.53% 14.0 0s * 169 35 15 46726.328051 46488.9083 0.51% 13.9 0s * 186 38 15 46709.873124 46502.8878 0.44% 13.5 0s * 209 38 15 46692.600156 46514.8752 0.38% 14.6 0s * 222 29 14 46679.468711 46524.3898 0.33% 14.8 0s * 224 28 14 46675.409298 46524.3898 0.32% 14.7 0s * 241 22 14 46669.612071 46542.8176 0.27% 15.2 0s * 243 21 14 46665.599010 46542.8176 0.26% 15.2 0s * 256 16 14 46660.016760 46563.3436 0.21% 15.5 1s * 278 6 14 46657.308374 46591.0597 0.14% 15.2 1s * 287 2 14 46653.878061 46651.6850 0.00% 15.1 1s Cutting planes: Gomory: 2 Flow cover: 3 Explored 288 nodes (5040 simplex iterations) in 1.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.665387806135e+04, best bound 4.665168497982e+04, gap 0.0047%