Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:28:44 2012 Optimize a model with 37809 rows, 36290 columns and 148768 nonzeros Presolve removed 23 rows and 3992 columns Presolve time: 0.82s Presolved: 37786 rows, 32298 columns, 144380 nonzeros Variable types: 0 continuous, 32298 integer (32298 binary) Found heuristic solution: objective 190.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 400 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 318 3.00000 2.00000 33.3% - 1s Explored 0 nodes (701 simplex iterations) in 1.03 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%