Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:56:45 2012 Optimize a model with 19583 rows, 23562 columns and 81547 nonzeros Presolve removed 614 rows and 2 columns Presolve time: 0.38s Presolved: 19122 rows, 23560 columns, 103178 nonzeros Variable types: 0 continuous, 23560 integer (23560 binary) Found heuristic solution: objective 153.0000000 Root relaxation: objective 3.000000e+00, 12396 iterations, 0.72 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 (20888 simplex iterations) in 1.57 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%