Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:27:48 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 6.209395e+04, 1406 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 62093.9493 0 6 - 62093.9493 - - 0s H 0 0 64909.000000 62093.9493 4.34% - 0s H 0 0 64886.000000 62093.9493 4.30% - 0s 0 0 62332.9754 0 5 64886.0000 62332.9754 3.93% - 0s H 0 0 64586.000000 62332.9754 3.49% - 0s 0 0 62373.8288 0 4 64586.0000 62373.8288 3.43% - 0s 0 0 62376.4421 0 6 64586.0000 62376.4421 3.42% - 0s H 0 0 64335.000000 62376.4421 3.04% - 0s 0 0 62377.0624 0 4 64335.0000 62377.0624 3.04% - 0s H 0 0 64228.000000 62377.0624 2.88% - 0s 0 0 62377.0624 0 4 64228.0000 62377.0624 2.88% - 0s H 0 0 64214.000000 62377.0624 2.86% - 0s 0 0 62377.0624 0 4 64214.0000 62377.0624 2.86% - 0s 0 0 62377.0624 0 4 64214.0000 62377.0624 2.86% - 0s H 0 0 63067.000000 62377.0624 1.09% - 0s 0 2 62426.3624 0 4 63067.0000 62426.3624 1.02% - 0s H 2 2 62975.000000 62451.8289 0.83% 19.0 0s * 10 6 8 62780.000000 62484.0108 0.47% 36.7 1s H 13 4 62679.029412 62484.1707 0.31% 34.8 1s * 17 4 7 62566.000000 62484.1707 0.13% 32.5 1s Cutting planes: Implied bound: 83 Flow cover: 7 Explored 22 nodes (2357 simplex iterations) in 1.09 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%