Gurobi 5.0.1 (linux64) logging started Fri Nov 16 09:09:22 2012 Optimize a model with 14429 rows, 4290 columns and 47253 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.42s Presolved: 14492 rows, 4288 columns, 51034 nonzeros Variable types: 0 continuous, 4288 integer (4288 binary) Found heuristic solution: objective 65.0000000 Root relaxation: objective 2.000000e+00, 3235 iterations, 0.12 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 130 65.00000 2.00000 96.9% - 0s H 0 0 64.0000000 2.00000 96.9% - 0s H 0 0 5.0000000 2.00000 60.0% - 0s 0 0 3.00000 0 2829 5.00000 3.00000 40.0% - 3s 0 0 3.00000 0 2871 5.00000 3.00000 40.0% - 5s H 0 0 4.0000000 3.00000 25.0% - 6s 0 0 3.00000 0 1170 4.00000 3.00000 25.0% - 12s 0 0 3.00000 0 168 4.00000 3.00000 25.0% - 21s Cutting planes: Clique: 13 Zero half: 1 Explored 0 nodes (67048 simplex iterations) in 22.16 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%