Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:14:58 2012 Optimize a model with 4565 rows, 135 columns and 9130 nonzeros Presolve removed 3262 rows and 0 columns Presolve time: 0.17s Presolved: 1303 rows, 135 columns, 9289 nonzeros Variable types: 0 continuous, 135 integer (135 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.733545e+01, 607 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.33545 0 134 8.00000 17.33545 117% - 0s 0 0 16.93390 0 134 8.00000 16.93390 112% - 0s H 0 0 9.0000000 16.93390 88.2% - 0s 0 0 16.78428 0 134 9.00000 16.78428 86.5% - 0s 0 0 16.70088 0 134 9.00000 16.70088 85.6% - 0s 0 0 16.67983 0 135 9.00000 16.67983 85.3% - 1s 0 0 16.66757 0 135 9.00000 16.66757 85.2% - 1s 0 0 16.66060 0 135 9.00000 16.66060 85.1% - 1s 0 0 16.65175 0 135 9.00000 16.65175 85.0% - 1s 0 0 16.64740 0 135 9.00000 16.64740 85.0% - 1s 0 0 16.64734 0 135 9.00000 16.64734 85.0% - 2s 0 2 16.64467 0 135 9.00000 16.64467 84.9% - 2s 397 226 10.59889 24 53 9.00000 14.65093 62.8% 75.1 5s 609 274 12.11555 12 135 9.00000 13.51858 50.2% 65.9 10s 1201 281 12.05953 29 60 9.00000 12.60515 40.1% 72.0 15s H 1267 182 10.0000000 12.44701 24.5% 70.2 15s Cutting planes: Clique: 48 Explored 1558 nodes (97420 simplex iterations) in 16.05 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%