Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:26:28 2012 Optimize a model with 48563 rows, 45582 columns and 190207 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.15s Presolved: 48774 rows, 45580 columns, 235120 nonzeros Variable types: 0 continuous, 45580 integer (45580 binary) Found heuristic solution: objective 213.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 453 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 348 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (830 simplex iterations) in 1.46 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%