Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:45:10 2013 Optimize a model with 40446 rows, 39816 columns and 158886 nonzeros Presolve removed 63 rows and 0 columns Presolve time: 0.18s Presolved: 40383 rows, 39816 columns, 158823 nonzeros Variable types: 39753 continuous, 63 integer (63 binary) Root relaxation: objective 5.374260e+04, 4878 iterations, 2.66 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53742.6044 0 49 - 53742.6044 - - 3s H 0 0 86358.000000 53742.6044 37.8% - 5s 0 0 66555.2495 0 16 86358.0000 66555.2495 22.9% - 10s H 0 0 82786.263172 66555.2495 19.6% - 10s H 0 0 72703.000000 66555.2495 8.46% - 10s 0 0 69242.8112 0 2 72703.0000 69242.8112 4.76% - 11s H 0 0 71606.988537 69242.8112 3.30% - 11s H 0 0 71340.000000 69242.8112 2.94% - 11s 0 0 69563.9705 0 3 71340.0000 69563.9705 2.49% - 12s H 0 0 70880.550403 69563.9705 1.86% - 12s H 0 0 70720.000000 69563.9705 1.63% - 12s H 0 0 69902.000000 69563.9705 0.48% - 12s 0 2 69585.4397 0 3 69902.0000 69585.4397 0.45% - 12s * 26 3 8 69874.000000 69839.8615 0.05% 99.0 14s Cutting planes: Implied bound: 58 Explored 29 nodes (13406 simplex iterations) in 14.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.987400000000e+04, best bound 6.987400000000e+04, gap 0.0%