Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:53:25 2013 Optimize a model with 640 rows, 14240 columns and 118620 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.22s Presolved: 620 rows, 14220 columns, 108600 nonzeros Variable types: 14040 continuous, 180 integer (180 binary) Root relaxation: objective 4.642213e+04, 565 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 46422.1265 0 9 - 46422.1265 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 0 46422.6092 0 9 - 46422.6092 - - 0s 0 2 46423.8606 0 9 - 46423.8606 - - 2s * 37 17 32 46777.974727 46425.4968 0.75% 7.7 2s H 66 23 46761.612071 46430.8076 0.71% 6.8 2s * 72 25 32 46761.269054 46430.8076 0.71% 6.5 2s * 106 37 31 46759.867296 46430.8076 0.70% 6.0 2s H 120 34 46757.959178 46449.0172 0.66% 6.1 2s * 138 42 32 46757.324490 46449.0172 0.66% 5.7 2s H 174 44 46755.103225 46721.4687 0.07% 5.4 3s * 177 46 32 46754.967789 46721.4687 0.07% 5.3 3s H 201 32 46750.440016 46721.9078 0.06% 5.0 3s * 211 38 33 46749.775887 46721.9078 0.06% 4.9 3s H 228 29 46747.995425 46722.5186 0.05% 4.8 3s * 233 29 15 46747.868868 46722.5186 0.05% 4.7 3s * 252 30 16 46746.152140 46724.5352 0.05% 4.5 3s Cutting planes: Flow cover: 8 Explored 276 nodes (2340 simplex iterations) in 3.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.674615213974e+04, best bound 4.674340232558e+04, gap 0.0059%