Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:34:23 2013 Optimize a model with 2625 rows, 625 columns and 8125 nonzeros Presolve removed 1417 rows and 389 columns Presolve time: 0.02s Presolved: 1208 rows, 236 columns, 3710 nonzeros Variable types: 4 continuous, 232 integer (232 binary) Found heuristic solution: objective 15276.000000 Root relaxation: objective 1.451110e+04, 276 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14511.0968 0 2 15276.0000 14511.0968 5.01% - 0s H 0 0 14512.000000 14511.0968 0.01% - 0s Explored 0 nodes (278 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.451200000000e+04, best bound 1.451200000000e+04, gap 0.0%