Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:44:08 2012 Optimize a model with 5799 rows, 870 columns and 18123 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 5826 rows, 868 columns, 23886 nonzeros Variable types: 0 continuous, 868 integer (868 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.661538e+00, 6634 iterations, 0.39 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.66154 0 607 29.00000 3.66154 87.4% - 1s H 0 0 28.0000000 3.66154 86.9% - 1s 0 0 6.00000 0 106 28.00000 6.00000 78.6% - 1s H 0 0 11.0000000 6.00000 45.5% - 1s H 0 0 7.0000000 6.00000 14.3% - 1s 0 0 6.00000 0 22 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 20 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 64 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 72 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 76 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 49 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 22 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 53 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 74 7.00000 6.00000 14.3% - 2s 0 0 6.00000 0 74 7.00000 6.00000 14.3% - 2s 0 2 6.00000 0 74 7.00000 6.00000 14.3% - 2s Cutting planes: Clique: 3 Zero half: 2 Explored 9 nodes (20271 simplex iterations) in 2.68 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%