Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:27:56 2013 Optimize a model with 638 rows, 33698 columns and 67338 nonzeros Presolve time: 0.05s Presolved: 638 rows, 33698 columns, 67338 nonzeros Variable types: 33640 continuous, 58 integer (58 binary) Root relaxation: objective 6.192559e+04, 1325 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 61925.5945 0 12 - 61925.5945 - - 0s H 0 0 68626.000000 61925.5945 9.76% - 0s 0 0 62673.9635 0 9 68626.0000 62673.9635 8.67% - 0s 0 0 62771.0922 0 10 68626.0000 62771.0922 8.53% - 0s H 0 0 68065.000000 62771.0922 7.78% - 0s 0 0 62788.8713 0 9 68065.0000 62788.8713 7.75% - 0s H 0 0 67735.000000 62788.8713 7.30% - 0s 0 0 62792.9965 0 9 67735.0000 62792.9965 7.30% - 0s 0 0 62794.6153 0 7 67735.0000 62794.6153 7.29% - 0s 0 0 62795.0350 0 8 67735.0000 62795.0350 7.29% - 0s 0 0 62796.9561 0 8 67735.0000 62796.9561 7.29% - 0s H 0 0 62989.000000 62796.9561 0.30% - 0s 0 0 62796.9561 0 7 62989.0000 62796.9561 0.30% - 0s 0 0 62796.9561 0 8 62989.0000 62796.9561 0.30% - 0s 0 0 62796.9561 0 6 62989.0000 62796.9561 0.30% - 1s 0 0 62796.9561 0 7 62989.0000 62796.9561 0.30% - 1s 0 0 62796.9561 0 7 62989.0000 62796.9561 0.30% - 1s 0 0 62796.9561 0 6 62989.0000 62796.9561 0.30% - 1s 0 0 62796.9561 0 6 62989.0000 62796.9561 0.30% - 1s 0 0 62796.9561 0 6 62989.0000 62796.9561 0.30% - 1s 0 2 62796.9561 0 6 62989.0000 62796.9561 0.30% - 1s * 11 10 9 62925.000000 62830.7545 0.15% 34.9 1s Cutting planes: Implied bound: 129 Flow cover: 10 Explored 28 nodes (3837 simplex iterations) in 1.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.292500000000e+04, best bound 6.292500000000e+04, gap 0.0%