Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:43:55 2012 Optimize a model with 13055 rows, 18632 columns and 57118 nonzeros Presolve removed 546 rows and 2 columns Presolve time: 0.23s Presolved: 12645 rows, 18630 columns, 74070 nonzeros Variable types: 0 continuous, 18630 integer (18630 binary) Found heuristic solution: objective 136.0000000 Root relaxation: objective 3.000000e+00, 8656 iterations, 0.50 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% - 3s Explored 0 nodes (24061 simplex iterations) in 3.58 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%