Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:10:28 2013 Optimize a model with 47056 rows, 46376 columns and 185096 nonzeros Presolve removed 68 rows and 0 columns Presolve time: 0.21s Presolved: 46988 rows, 46376 columns, 185028 nonzeros Variable types: 46308 continuous, 68 integer (68 binary) Root relaxation: objective 6.076246e+04, 6143 iterations, 3.52 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 60762.4554 0 52 - 60762.4554 - - 3s H 0 0 94076.000000 60762.4554 35.4% - 6s 0 0 73402.2843 0 21 94076.0000 73402.2843 22.0% - 13s 0 0 78191.2597 0 9 94076.0000 78191.2597 16.9% - 16s H 0 0 89713.129404 78191.2597 12.8% - 16s H 0 0 87306.000000 78191.2597 10.4% - 16s 0 0 78277.9323 0 4 87306.0000 78277.9323 10.3% - 17s H 0 0 83282.355679 78277.9323 6.01% - 17s H 0 0 81573.000000 78277.9323 4.04% - 17s H 0 0 81118.531437 78277.9323 3.50% - 18s H 0 0 79432.175325 78277.9323 1.45% - 18s H 0 0 79267.000000 78277.9323 1.25% - 18s 0 2 78281.4941 0 4 79267.0000 78281.4941 1.24% - 19s H 3 3 78967.354839 78370.7492 0.76% 211 19s 6 8 78401.2835 5 3 78967.3548 78370.7492 0.76% 153 20s H 8 8 78814.967742 78370.7492 0.56% 116 20s H 27 12 78616.000000 78375.1619 0.31% 163 22s H 66 24 78597.000000 78407.3871 0.24% 128 25s * 149 0 20 78560.000000 78560.0000 0.0% 88.8 27s Cutting planes: Implied bound: 67 Explored 150 nodes (26966 simplex iterations) in 27.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.856000000000e+04, best bound 7.856000000000e+04, gap 0.0%