Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:35:39 2013 Optimize a model with 5140 rows, 16020 columns and 42010 nonzeros Presolve removed 20 rows and 30 columns Presolve time: 0.24s Presolved: 5120 rows, 15990 columns, 31980 nonzeros Variable types: 11000 continuous, 4990 integer (4990 binary) Root relaxation: objective 2.337984e+04, 130 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23379.8401 0 1 - 23379.8401 - - 0s 0 0 23380.3837 0 2 - 23380.3837 - - 0s 0 0 23380.4542 0 2 - 23380.4542 - - 0s 0 0 23380.4542 0 2 - 23380.4542 - - 0s 0 2 23380.6969 0 2 - 23380.6969 - - 1s 513 342 23561.6092 512 2 - 23520.0158 - 1.4 5s * 862 491 832 23673.289280 23520.0158 0.65% 1.6 7s * 939 321 173 23556.785464 23520.0410 0.16% 1.7 7s H 945 245 23545.597421 23520.0410 0.11% 1.7 7s H 972 235 23541.189507 23520.1717 0.09% 1.7 7s H 999 108 23527.308995 23520.1784 0.03% 1.7 7s 1101 119 23523.9456 59 2 23527.3090 23520.6759 0.03% 1.8 11s Cutting planes: Flow cover: 1 Explored 1971 nodes (5715 simplex iterations) in 14.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.352730899529e+04, best bound 2.352497663506e+04, gap 0.0099%