Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:10:26 2012 Optimize a model with 37013 rows, 34782 columns and 144892 nonzeros Presolve removed 765 rows and 3536 columns Presolve time: 0.89s Presolved: 36248 rows, 31246 columns, 139108 nonzeros Variable types: 0 continuous, 31246 integer (31246 binary) Found heuristic solution: objective 186.0000000 Root relaxation: objective 3.000000e+00, 19431 iterations, 4.41 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% - 5s Explored 0 nodes (19431 simplex iterations) in 5.40 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%