Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:12:25 2013 Optimize a model with 561 rows, 26061 columns and 52071 nonzeros Presolve time: 0.04s Presolved: 561 rows, 26061 columns, 52071 nonzeros Variable types: 26010 continuous, 51 integer (51 binary) Root relaxation: objective 5.682590e+04, 1212 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 56825.9009 0 7 - 56825.9009 - - 0s H 0 0 58855.000000 56825.9009 3.45% - 0s H 0 0 57915.000000 56825.9009 1.88% - 0s 0 0 57374.2897 0 4 57915.0000 57374.2897 0.93% - 0s 0 0 57404.9157 0 1 57915.0000 57404.9157 0.88% - 0s H 0 0 57785.108434 57404.9157 0.66% - 0s H 0 0 57567.000000 57404.9157 0.28% - 0s 0 0 57419.5645 0 3 57567.0000 57419.5645 0.26% - 0s 0 0 57421.9259 0 1 57567.0000 57421.9259 0.25% - 0s 0 0 57425.9406 0 5 57567.0000 57425.9406 0.25% - 0s H 0 0 57556.000000 57425.9406 0.23% - 0s 0 0 57426.4235 0 2 57556.0000 57426.4235 0.23% - 0s 0 0 57426.6588 0 1 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 1 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 7 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 4 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 1 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 3 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 4 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 2 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 1 57556.0000 57426.6588 0.22% - 0s 0 0 57426.6588 0 1 57556.0000 57426.6588 0.22% - 0s 0 2 57468.0000 0 1 57556.0000 57468.0000 0.15% - 0s * 4 1 3 57553.000000 57544.0253 0.02% 35.2 0s Cutting planes: Implied bound: 68 Flow cover: 3 Explored 6 nodes (2916 simplex iterations) in 0.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.755300000000e+04, best bound 5.755300000000e+04, gap 0.0%