Gurobi 5.0.1 (linux64) logging started Fri Nov 16 02:05:54 2012 Optimize a model with 7067 rows, 992 columns and 22039 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.08s Presolved: 7065 rows, 990 columns, 24811 nonzeros Variable types: 0 continuous, 990 integer (990 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 3.468354e+00, 6669 iterations, 0.45 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.46835 0 829 31.00000 3.46835 88.8% - 1s H 0 0 30.0000000 3.46835 88.4% - 1s 0 0 6.00000 0 129 30.00000 6.00000 80.0% - 2s H 0 0 23.0000000 6.00000 73.9% - 2s H 0 0 8.0000000 6.00000 25.0% - 2s 0 0 6.00000 0 144 8.00000 6.00000 25.0% - 2s 0 0 6.00000 0 102 8.00000 6.00000 25.0% - 3s H 0 0 7.0000000 6.00000 14.3% - 3s 0 0 6.00000 0 85 7.00000 6.00000 14.3% - 3s 0 0 6.00000 0 86 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 113 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 108 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 131 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 92 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 4s 0 0 6.00000 0 117 7.00000 6.00000 14.3% - 4s 0 2 6.00000 0 117 7.00000 6.00000 14.3% - 4s 1 4 6.00000 1 129 7.00000 6.00000 14.3% 517 5s Cutting planes: Clique: 39 Zero half: 15 Explored 25 nodes (29850 simplex iterations) in 5.23 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%