Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:28:16 2013 Optimize a model with 34336 rows, 33756 columns and 134676 nonzeros Presolve removed 58 rows and 0 columns Presolve time: 0.15s Presolved: 34278 rows, 33756 columns, 134618 nonzeros Variable types: 33698 continuous, 58 integer (58 binary) Root relaxation: objective 5.070031e+04, 4491 iterations, 1.97 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50700.3145 0 49 - 50700.3145 - - 2s H 0 0 72132.000000 50700.3145 29.7% - 3s 0 0 60655.2867 0 13 72132.0000 60655.2867 15.9% - 6s H 0 0 69453.000000 60655.2867 12.7% - 6s 0 0 62256.2355 0 3 69453.0000 62256.2355 10.4% - 7s H 0 0 66482.089649 62256.2355 6.36% - 7s H 0 0 65684.000000 62256.2355 5.22% - 7s 0 0 62376.8608 0 4 65684.0000 62376.8608 5.03% - 7s H 0 0 65238.678046 62376.8608 4.39% - 7s H 0 0 64275.000000 62376.8608 2.95% - 7s H 0 0 63067.000000 62376.8608 1.09% - 8s 0 2 62379.4724 0 4 63067.0000 62379.4724 1.09% - 8s H 4 3 62678.941176 62478.8156 0.32% 138 8s * 8 4 6 62566.000000 62478.8156 0.14% 145 9s Cutting planes: Implied bound: 55 Explored 15 nodes (10319 simplex iterations) in 9.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.256600000000e+04, best bound 6.256600000000e+04, gap 0.0%