Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:07:27 2013 Optimize a model with 1016 rows, 2013 columns and 7025 nonzeros Presolve removed 13 rows and 55 columns Presolve time: 0.06s Presolved: 1003 rows, 1958 columns, 5873 nonzeros Variable types: 1000 continuous, 958 integer (958 binary) Found heuristic solution: objective 2970.4555123 Root relaxation: objective 2.965356e+03, 8 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2965.35631 0 2 2970.45551 2965.35631 0.17% - 0s 0 0 2965.58709 0 2 2970.45551 2965.58709 0.16% - 0s 0 0 2965.81568 0 2 2970.45551 2965.81568 0.16% - 0s 0 0 2966.04213 0 2 2970.45551 2966.04213 0.15% - 0s 0 0 2966.26650 0 2 2970.45551 2966.26650 0.14% - 0s 0 0 2966.48884 0 2 2970.45551 2966.48884 0.13% - 0s 0 0 2966.70919 0 2 2970.45551 2966.70919 0.13% - 0s 0 0 2966.92762 0 2 2970.45551 2966.92762 0.12% - 0s 0 0 2967.14415 0 2 2970.45551 2967.14415 0.11% - 0s 0 0 2967.35883 0 2 2970.45551 2967.35883 0.10% - 0s 0 0 2967.57170 0 2 2970.45551 2967.57170 0.10% - 0s 0 0 2967.78281 0 2 2970.45551 2967.78281 0.09% - 0s 0 0 2967.99218 0 2 2970.45551 2967.99218 0.08% - 0s 0 0 2968.19986 0 2 2970.45551 2968.19986 0.08% - 0s 0 0 2968.40588 0 2 2970.45551 2968.40588 0.07% - 0s 0 0 2968.61027 0 2 2970.45551 2968.61027 0.06% - 0s 0 0 2968.81306 0 2 2970.45551 2968.81306 0.06% - 0s 0 0 2969.01429 0 2 2970.45551 2969.01429 0.05% - 0s 0 0 2969.21398 0 2 2970.45551 2969.21398 0.04% - 0s 0 0 2969.41216 0 2 2970.45551 2969.41216 0.04% - 0s 0 0 2969.60886 0 2 2970.45551 2969.60886 0.03% - 0s 0 0 2969.80410 0 2 2970.45551 2969.80410 0.02% - 0s 0 0 2969.99792 0 2 2970.45551 2969.99792 0.02% - 0s 0 0 2970.19033 0 2 2970.45551 2970.19033 0.01% - 0s Explored 0 nodes (122 simplex iterations) in 0.42 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.970455512267e+03, best bound 2.970190325894e+03, gap 0.0089%