Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:44:14 2012 Optimize a model with 5857 rows, 870 columns and 18297 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 5884 rows, 868 columns, 23727 nonzeros Variable types: 0 continuous, 868 integer (868 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.648855e+00, 6662 iterations, 0.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.64885 0 638 29.00000 3.64885 87.4% - 1s H 0 0 27.0000000 3.64885 86.5% - 1s 0 0 6.00000 0 117 27.00000 6.00000 77.8% - 1s H 0 0 15.0000000 6.00000 60.0% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 66 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 59 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 94 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 103 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 97 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 40 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 99 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 96 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 104 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 97 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 93 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 92 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 95 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 95 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 95 7.00000 6.00000 14.3% - 3s Cutting planes: Clique: 14 Zero half: 3 Explored 7 nodes (23213 simplex iterations) in 3.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%