Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:27:26 2013 Optimize a model with 1536 rows, 32148 columns and 2003914 nonzeros Presolve removed 118 rows and 953 columns (presolve time = 5s) ... Presolve removed 118 rows and 953 columns Presolve time: 5.22s Presolved: 1418 rows, 31195 columns, 1930250 nonzeros Variable types: 0 continuous, 31195 integer (31195 binary) Found heuristic solution: objective 18935.000000 Root relaxation: objective 1.388900e+04, 7806 iterations, 4.66 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 13889.000000 13889.0000 0.0% - 10s Explored 0 nodes (7806 simplex iterations) in 10.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.388900000000e+04, best bound 1.388900000000e+04, gap 0.0%