Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:27:30 2012 Optimize a model with 4999 rows, 141 columns and 9998 nonzeros Presolve removed 3528 rows and 0 columns Presolve time: 0.19s Presolved: 1471 rows, 141 columns, 10597 nonzeros Variable types: 0 continuous, 141 integer (141 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.824354e+01, 647 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.24354 0 132 8.00000 18.24354 128% - 0s H 0 0 9.0000000 18.24354 103% - 0s 0 0 17.46428 0 139 9.00000 17.46428 94.0% - 0s 0 0 17.30510 0 139 9.00000 17.30510 92.3% - 0s 0 0 17.25579 0 139 9.00000 17.25579 91.7% - 0s 0 0 17.23692 0 140 9.00000 17.23692 91.5% - 1s H 0 0 10.0000000 17.23692 72.4% - 1s 0 0 17.20000 0 140 10.00000 17.20000 72.0% - 1s 0 0 17.19093 0 140 10.00000 17.19093 71.9% - 1s 0 0 17.18416 0 140 10.00000 17.18416 71.8% - 1s 0 0 17.17642 0 140 10.00000 17.17642 71.8% - 1s 0 0 17.17494 0 139 10.00000 17.17494 71.7% - 2s 0 0 17.15083 0 139 10.00000 17.15083 71.5% - 2s 0 0 17.12986 0 139 10.00000 17.12986 71.3% - 2s 0 0 17.11982 0 139 10.00000 17.11982 71.2% - 2s 0 0 17.11808 0 138 10.00000 17.11808 71.2% - 2s 0 0 17.10851 0 139 10.00000 17.10851 71.1% - 3s 0 0 17.10056 0 140 10.00000 17.10056 71.0% - 3s 0 0 17.09439 0 140 10.00000 17.09439 70.9% - 3s 0 0 17.09267 0 140 10.00000 17.09267 70.9% - 3s 0 0 17.09216 0 140 10.00000 17.09216 70.9% - 4s 0 0 17.09202 0 140 10.00000 17.09202 70.9% - 4s 0 2 17.09162 0 140 10.00000 17.09162 70.9% - 4s 36 38 13.34101 36 99 10.00000 17.09070 70.9% 94.1 5s 574 172 12.52442 11 68 10.00000 13.37309 33.7% 78.4 10s Cutting planes: Clique: 208 Explored 828 nodes (61115 simplex iterations) in 12.42 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%