Gurobi 5.0.1 (linux64) logging started Sat Nov 17 11:45:32 2012 Optimize a model with 76442 rows, 62250 columns and 290332 nonzeros Presolve removed 13 rows and 3237 columns (presolve time = 5s) ... Presolve removed 15 rows and 3239 columns Presolve time: 6.81s Presolved: 76427 rows, 59011 columns, 286481 nonzeros Variable types: 0 continuous, 59011 integer (59011 binary) Found heuristic solution: objective 249.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 561 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 0 464 3.00000 2.00000 33.3% - 7s Explored 0 nodes (1045 simplex iterations) in 7.27 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%