Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:01:21 2012 Optimize a model with 14559 rows, 4290 columns and 47643 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.44s Presolved: 14557 rows, 4288 columns, 47195 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 62.0000000 Root relaxation: objective 2.000000e+00, 3300 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 62.00000 2.00000 96.8% - 0s H 0 0 59.0000000 2.00000 96.6% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 120 5.00000 3.00000 40.0% - 4s 0 0 3.00800 0 3148 5.00000 3.00800 39.8% - 5s 0 0 3.00800 0 3163 5.00000 3.00800 39.8% - 7s 0 0 3.00800 0 2724 5.00000 3.00800 39.8% - 17s H 0 0 4.0000000 3.00800 24.8% - 18s Cutting planes: Clique: 14 Explored 0 nodes (58843 simplex iterations) in 18.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%