Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:48:40 2012 Optimize a model with 17445 rows, 20592 columns and 72213 nonzeros Presolve removed 574 rows and 2 columns Presolve time: 0.32s Presolved: 17014 rows, 20590 columns, 90996 nonzeros Variable types: 0 continuous, 20590 integer (20590 binary) Found heuristic solution: objective 143.0000000 Root relaxation: objective 3.000000e+00, 9791 iterations, 0.87 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 28 143.00000 3.00000 97.9% - 5s H 0 0 3.0000000 3.00000 0.0% - 5s Explored 0 nodes (36623 simplex iterations) in 5.07 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%