Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:03:49 2013 Optimize a model with 58672 rows, 57912 columns and 231192 nonzeros Presolve removed 76 rows and 0 columns Presolve time: 0.26s Presolved: 58596 rows, 57912 columns, 231116 nonzeros Variable types: 57836 continuous, 76 integer (76 binary) Root relaxation: objective 6.491874e+04, 7610 iterations, 4.64 seconds Total elapsed time = 5.19s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64918.7449 0 53 - 64918.7449 - - 5s H 0 0 107988.00000 64918.7449 39.9% - 7s 0 0 78901.7526 0 18 107988.000 78901.7526 26.9% - 16s H 0 0 92923.000000 78901.7526 15.1% - 17s 0 0 81970.5674 0 6 92923.0000 81970.5674 11.8% - 20s H 0 0 92253.643797 81970.5674 11.1% - 20s H 0 0 89728.000000 81970.5674 8.65% - 20s H 0 0 88663.000000 81970.5674 7.55% - 21s 0 0 83073.5174 0 5 88663.0000 83073.5174 6.30% - 22s H 0 0 88202.000000 83073.5174 5.81% - 22s H 0 0 83317.000000 83073.5174 0.29% - 22s 0 0 83162.8683 0 3 83317.0000 83162.8683 0.18% - 22s 0 0 83212.1847 0 3 83317.0000 83212.1847 0.13% - 23s 0 0 83212.4523 0 2 83317.0000 83212.4523 0.13% - 24s 0 0 83212.4523 0 40 83317.0000 83212.4523 0.13% - 28s 0 0 83212.4523 0 16 83317.0000 83212.4523 0.13% - 35s 0 0 83212.4523 0 4 83317.0000 83212.4523 0.13% - 36s 0 0 83212.4523 0 3 83317.0000 83212.4523 0.13% - 37s 0 0 83212.4523 0 2 83317.0000 83212.4523 0.13% - 37s 0 2 83213.4262 0 2 83317.0000 83213.4262 0.12% - 38s Cutting planes: Gomory: 1 Implied bound: 53 Explored 10 nodes (29669 simplex iterations) in 39.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.331700000000e+04, best bound 8.331700000000e+04, gap 0.0%