Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:20:54 2012 Optimize a model with 4764 rows, 138 columns and 9528 nonzeros Presolve removed 3425 rows and 0 columns Presolve time: 0.20s Presolved: 1339 rows, 138 columns, 9480 nonzeros Variable types: 0 continuous, 138 integer (138 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.779730e+01, 638 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.79730 0 136 7.00000 17.79730 154% - 0s H 0 0 8.0000000 17.79730 122% - 0s 0 0 17.27483 0 138 8.00000 17.27483 116% - 0s 0 0 17.17378 0 138 8.00000 17.17378 115% - 0s 0 0 17.12708 0 138 8.00000 17.12708 114% - 0s 0 0 17.08666 0 138 8.00000 17.08666 114% - 1s 0 0 17.07687 0 138 8.00000 17.07687 113% - 1s 0 0 17.07123 0 138 8.00000 17.07123 113% - 1s H 0 0 9.0000000 17.07123 89.7% - 1s 0 0 17.06966 0 138 9.00000 17.06966 89.7% - 1s 0 0 17.06799 0 138 9.00000 17.06799 89.6% - 1s 0 0 17.06779 0 138 9.00000 17.06779 89.6% - 2s 0 0 17.06775 0 138 9.00000 17.06775 89.6% - 2s 0 2 17.06753 0 138 9.00000 17.06753 89.6% - 2s H 139 87 10.0000000 16.56416 65.6% 84.8 3s 296 136 13.37875 13 72 10.00000 15.50959 55.1% 83.5 5s Cutting planes: Clique: 115 Explored 743 nodes (57080 simplex iterations) in 7.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%