Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:43:05 2013 Optimize a model with 9919 rows, 1521 columns and 30420 nonzeros Presolve removed 2078 rows and 806 columns Presolve time: 0.07s Presolved: 7841 rows, 715 columns, 23952 nonzeros Variable types: 12 continuous, 703 integer (703 binary) Found heuristic solution: objective 38870.000000 Root relaxation: objective 3.330782e+04, 1378 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33307.8171 0 3 38870.0000 33307.8171 14.3% - 0s H 0 0 33321.000000 33307.8171 0.04% - 0s H 0 0 33311.000000 33307.8171 0.01% - 0s Explored 0 nodes (1378 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.331100000000e+04, best bound 3.330800000000e+04, gap 0.0090%