Gurobi 5.0.1 (linux64) logging started Sat Nov 17 00:19:37 2012 Optimize a model with 49851 rows, 42642 columns and 191166 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 1.24s Presolved: 50055 rows, 42640 columns, 233118 nonzeros Variable types: 0 continuous, 42640 integer (42640 binary) Found heuristic solution: objective 206.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 450 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 0 358 3.00000 2.00000 33.3% - 1s Explored 0 nodes (807 simplex iterations) in 1.55 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%