Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:48:28 2012 Optimize a model with 5475 rows, 148 columns and 10950 nonzeros Presolve removed 3937 rows and 0 columns Presolve time: 0.22s Presolved: 1538 rows, 148 columns, 11170 nonzeros Variable types: 0 continuous, 148 integer (148 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.862129e+01, 768 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.62129 0 146 8.00000 18.62129 133% - 0s 0 0 18.34937 0 148 8.00000 18.34937 129% - 0s 0 0 18.28028 0 147 8.00000 18.28028 129% - 0s 0 0 18.16576 0 146 8.00000 18.16576 127% - 1s 0 0 18.12015 0 148 8.00000 18.12015 127% - 1s 0 0 18.09545 0 148 8.00000 18.09545 126% - 1s H 0 0 9.0000000 18.09545 101% - 1s 0 0 18.05675 0 147 9.00000 18.05675 101% - 1s 0 0 18.02038 0 147 9.00000 18.02038 100% - 1s 0 0 18.01882 0 147 9.00000 18.01882 100% - 2s 0 0 18.01664 0 147 9.00000 18.01664 100% - 2s 0 0 18.01499 0 148 9.00000 18.01499 100% - 2s 0 0 18.01471 0 148 9.00000 18.01471 100% - 2s 0 0 18.01458 0 148 9.00000 18.01458 100% - 2s 0 2 18.01454 0 148 9.00000 18.01454 100% - 3s 155 120 14.43171 4 75 9.00000 17.54109 94.9% 94.7 5s H 600 295 10.0000000 15.14210 51.4% 75.0 11s 621 311 14.10378 16 70 10.00000 15.14210 51.4% 80.5 15s 1130 326 12.62598 24 62 10.00000 13.60252 36.0% 88.5 20s 1639 160 12.03632 36 52 10.00000 12.24222 22.4% 76.2 25s Cutting planes: Clique: 41 Explored 1894 nodes (132824 simplex iterations) in 28.00 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%