Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:07:52 2013 Optimize a model with 58672 rows, 57912 columns and 231192 nonzeros Presolve removed 76 rows and 0 columns Presolve time: 0.27s Presolved: 58596 rows, 57912 columns, 231116 nonzeros Variable types: 57836 continuous, 76 integer (76 binary) Root relaxation: objective 6.170390e+04, 6637 iterations, 4.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61703.8972 0 61 - 61703.8972 - - 5s H 0 0 101177.00000 61703.8972 39.0% - 8s 0 0 76063.8663 0 17 101177.000 76063.8663 24.8% - 18s H 0 0 97229.368122 76063.8663 21.8% - 18s H 0 0 84563.000000 76063.8663 10.1% - 18s H 0 0 83704.000000 76063.8663 9.13% - 19s 0 0 78651.4914 0 6 83704.0000 78651.4914 6.04% - 20s H 0 0 81671.962363 78651.4914 3.70% - 20s H 0 0 80275.000000 78651.4914 2.02% - 20s 0 0 78651.4914 0 6 80275.0000 78651.4914 2.02% - 21s H 0 0 79901.026561 78651.4914 1.56% - 22s H 0 0 79581.942074 78651.4914 1.17% - 22s H 0 0 79547.546240 78651.4914 1.13% - 22s H 0 0 78816.000000 78651.4914 0.21% - 24s 0 2 78655.7688 0 6 78816.0000 78655.7688 0.20% - 24s 3 4 78692.8858 2 4 78816.0000 78692.8858 0.16% 283 25s * 13 6 9 78781.000000 78694.8826 0.11% 178 25s Cutting planes: Gomory: 1 Implied bound: 69 MIR: 1 Explored 29 nodes (18299 simplex iterations) in 26.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.878100000000e+04, best bound 7.877415529980e+04, gap 0.0087%