Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:18:08 2012 Optimize a model with 4696 rows, 137 columns and 9392 nonzeros Presolve removed 3364 rows and 0 columns Presolve time: 0.18s Presolved: 1332 rows, 137 columns, 9409 nonzeros Variable types: 0 continuous, 137 integer (137 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.793396e+01, 611 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.93396 0 135 8.00000 17.93396 124% - 0s 0 0 17.39411 0 135 8.00000 17.39411 117% - 0s 0 0 17.32012 0 135 8.00000 17.32012 117% - 0s 0 0 17.29559 0 136 8.00000 17.29559 116% - 0s H 0 0 10.0000000 17.29559 73.0% - 0s 0 0 17.25516 0 137 10.00000 17.25516 72.6% - 1s 0 0 17.24352 0 136 10.00000 17.24352 72.4% - 1s 0 0 17.23910 0 136 10.00000 17.23910 72.4% - 1s 0 0 17.23422 0 136 10.00000 17.23422 72.3% - 1s 0 0 17.22830 0 137 10.00000 17.22830 72.3% - 1s 0 0 17.21398 0 137 10.00000 17.21398 72.1% - 1s 0 0 17.20511 0 136 10.00000 17.20511 72.1% - 2s 0 0 17.19918 0 136 10.00000 17.19918 72.0% - 2s 0 0 17.19748 0 136 10.00000 17.19748 72.0% - 2s 0 0 17.19738 0 136 10.00000 17.19738 72.0% - 2s 0 2 17.19563 0 136 10.00000 17.19563 72.0% - 3s 226 128 12.62137 11 58 10.00000 15.73351 57.3% 86.9 5s Cutting planes: Clique: 142 Zero half: 1 Explored 704 nodes (52199 simplex iterations) in 7.70 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%