Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:03:51 2012 Optimize a model with 20510 rows, 25440 columns and 86176 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.41s Presolved: 20667 rows, 25438 columns, 111199 nonzeros Variable types: 0 continuous, 25438 integer (25438 binary) Found heuristic solution: objective 159.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 310 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 216 3.00000 2.00000 33.3% - 0s Explored 0 nodes (562 simplex iterations) in 0.55 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%