Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:20:32 2012 Optimize a model with 7559 rows, 4032 columns and 26395 nonzeros Presolve removed 1327 rows and 128 columns Presolve time: 0.23s Presolved: 6232 rows, 3904 columns, 22858 nonzeros Variable types: 0 continuous, 3904 integer (3904 binary) Found heuristic solution: objective 63.0000000 Root relaxation: objective 3.000000e+00, 4997 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 211 63.00000 3.00000 95.2% - 2s H 0 0 60.0000000 3.00000 95.0% - 3s H 0 0 3.0000000 3.00000 0.0% - 3s Explored 0 nodes (20812 simplex iterations) in 3.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%