Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:37 2013 Optimize a model with 275 rows, 6275 columns and 12525 nonzeros Presolve time: 0.01s Presolved: 275 rows, 6275 columns, 12525 nonzeros Variable types: 6250 continuous, 25 integer (25 binary) Root relaxation: objective 2.638091e+04, 310 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 26380.9080 0 4 - 26380.9080 - - 0s H 0 0 26623.000000 26380.9080 0.91% - 0s 0 0 26579.1365 0 2 26623.0000 26579.1365 0.16% - 0s 0 0 26588.3041 0 2 26623.0000 26588.3041 0.13% - 0s 0 0 26589.0181 0 2 26623.0000 26589.0181 0.13% - 0s 0 0 26589.5851 0 2 26623.0000 26589.5851 0.13% - 0s 0 0 26598.6400 0 1 26623.0000 26598.6400 0.09% - 0s * 0 0 0 26612.000000 26612.0000 0.0% - 0s Cutting planes: Implied bound: 49 Flow cover: 6 Explored 0 nodes (458 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.661200000000e+04, best bound 2.661200000000e+04, gap 0.0%