Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:50:52 2012 Optimize a model with 6599 rows, 930 columns and 20578 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 6597 rows, 928 columns, 23980 nonzeros Variable types: 0 continuous, 928 integer (928 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 3.493333e+00, 6300 iterations, 0.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.49333 0 768 29.00000 3.49333 88.0% - 1s H 0 0 25.0000000 3.49333 86.0% - 1s 0 0 6.00000 0 124 25.00000 6.00000 76.0% - 1s H 0 0 20.0000000 6.00000 70.0% - 1s 0 0 6.00000 0 140 20.00000 6.00000 70.0% - 1s 0 0 6.00000 0 118 20.00000 6.00000 70.0% - 2s H 0 0 16.0000000 6.00000 62.5% - 2s H 0 0 13.0000000 6.00000 53.8% - 2s 0 0 6.00000 0 133 13.00000 6.00000 53.8% - 3s 0 0 6.00000 0 123 13.00000 6.00000 53.8% - 4s H 0 0 11.0000000 6.00000 45.5% - 4s 0 0 6.00000 0 107 11.00000 6.00000 45.5% - 5s H 0 0 10.0000000 6.00000 40.0% - 5s H 0 0 9.0000000 6.00000 33.3% - 5s 0 0 6.00000 0 126 9.00000 6.00000 33.3% - 5s H 0 0 8.0000000 6.00000 25.0% - 5s H 0 0 7.0000000 6.00000 14.3% - 6s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 55 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 139 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 97 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 122 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 104 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 119 7.00000 6.00000 14.3% - 6s 0 0 6.00000 0 118 7.00000 6.00000 14.3% - 6s 0 2 6.00000 0 118 7.00000 6.00000 14.3% - 7s Cutting planes: Clique: 14 Zero half: 21 Explored 5 nodes (36524 simplex iterations) in 7.07 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%