Gurobi 5.0.1 (linux64) logging started Fri Nov 16 22:46:33 2012 Optimize a model with 38217 rows, 37830 columns and 151512 nonzeros Presolve removed 28 rows and 5046 columns Presolve time: 0.83s Presolved: 38189 rows, 32784 columns, 146074 nonzeros Variable types: 0 continuous, 32784 integer (32784 binary) Found heuristic solution: objective 194.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 383 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 0 316 3.00000 2.00000 33.3% - 1s 0 0 infeasible 0 3.00000 2.00000 33.3% - 1s Explored 0 nodes (674 simplex iterations) in 1.04 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%