Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:45:26 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 5.278290e+04, 4694 iterations, 1.96 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52782.9021 0 47 - 52782.9021 - - 2s H 0 0 72310.000000 52782.9021 27.0% - 2s 0 0 61423.6414 0 5 72310.0000 61423.6414 15.1% - 5s H 0 0 65618.630859 61423.6414 6.39% - 5s H 0 0 64499.000000 61423.6414 4.77% - 5s 0 0 61600.5193 0 3 64499.0000 61600.5193 4.49% - 6s H 0 0 63637.609193 61600.5193 3.20% - 6s H 0 0 63435.000000 61600.5193 2.89% - 6s 0 0 61619.2293 0 2 63435.0000 61619.2293 2.86% - 6s 0 0 61627.5254 0 2 63435.0000 61627.5254 2.85% - 7s 0 0 61631.8779 0 3 63435.0000 61631.8779 2.84% - 7s 0 0 61638.9651 0 2 63435.0000 61638.9651 2.83% - 8s 0 0 61639.2000 0 1 63435.0000 61639.2000 2.83% - 8s H 0 0 62776.000000 61639.2000 1.81% - 8s H 0 0 62306.000000 61639.2000 1.07% - 8s 0 2 61639.5275 0 1 62306.0000 61639.5275 1.07% - 9s H 3 2 62231.178571 61673.4995 0.90% 120 10s H 4 3 61990.368421 61685.5202 0.49% 125 10s * 11 2 11 61778.000000 61685.5202 0.15% 129 10s Cutting planes: Implied bound: 58 Explored 14 nodes (10894 simplex iterations) in 11.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.177800000000e+04, best bound 6.177800000000e+04, gap 0.0%