Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:48:03 2012 Optimize a model with 17181 rows, 20306 columns and 71140 nonzeros Presolve removed 286 rows and 2 columns Presolve time: 0.32s Presolved: 17037 rows, 20304 columns, 90356 nonzeros Variable types: 0 continuous, 20304 integer (20304 binary) Found heuristic solution: objective 142.0000000 Root relaxation: objective 3.000000e+00, 14739 iterations, 1.60 seconds Total elapsed time = 6.55s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 18 142.00000 3.00000 97.9% - 7s H 0 0 3.0000000 3.00000 0.0% - 7s Explored 0 nodes (36523 simplex iterations) in 7.15 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%