Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:36 2013 Optimize a model with 216 rows, 413 columns and 1425 nonzeros Presolve removed 36 rows and 60 columns Presolve time: 0.01s Presolved: 180 rows, 353 columns, 1058 nonzeros Variable types: 177 continuous, 176 integer (176 binary) Found heuristic solution: objective 3292.3312452 Root relaxation: objective 3.286103e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3286.10319 0 2 3292.33125 3286.10319 0.19% - 0s 0 0 3287.07774 0 2 3292.33125 3287.07774 0.16% - 0s 0 0 3288.02630 0 2 3292.33125 3288.02630 0.13% - 0s 0 0 3288.95003 0 2 3292.33125 3288.95003 0.10% - 0s 0 0 3289.85001 0 2 3292.33125 3289.85001 0.08% - 0s 0 0 3290.72721 0 2 3292.33125 3290.72721 0.05% - 0s 0 0 3291.58254 0 2 3292.33125 3291.58254 0.02% - 0s 0 0 cutoff 0 3292.33125 3292.33125 0.0% - 0s Explored 0 nodes (37 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.292331245171e+03, best bound 3.292331245171e+03, gap 0.0%