Gurobi 5.0.1 (linux64) logging started Fri Nov 16 18:09:57 2012 Optimize a model with 6843 rows, 13572 columns and 33522 nonzeros Presolve removed 273 rows and 4526 columns Presolve time: 0.14s Presolved: 6570 rows, 9046 columns, 28304 nonzeros Variable types: 0 continuous, 9046 integer (9046 binary) Found heuristic solution: objective 116.0000000 Root relaxation: objective 3.000000e+00, 4720 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 1s Explored 0 nodes (12523 simplex iterations) in 1.18 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%