Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:36:40 2012 Optimize a model with 487 rows, 462 columns and 1677 nonzeros Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 487 rows, 433 columns, 1648 nonzeros Variable types: 0 continuous, 433 integer (432 binary) Found heuristic solution: objective 85.0000000 Root relaxation: objective 0.000000e+00, 238 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 182 85.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s 0 0 0.23483 0 184 62.00000 0.23483 100% - 0s H 0 0 51.0000000 0.23483 100% - 0s 0 0 0.78116 0 188 51.00000 0.78116 98.5% - 0s H 0 0 39.0000000 0.78116 98.0% - 0s 0 0 0.78129 0 188 39.00000 0.78129 98.0% - 0s 0 2 0.78202 0 188 39.00000 0.78202 98.0% - 0s H 27 27 35.0000000 1.00000 97.1% 56.7 0s * 74 62 47 19.0000000 1.00000 94.7% 32.9 0s * 77 47 49 18.0000000 1.00000 94.4% 33.3 0s * 665 299 40 17.0000000 3.45902 79.7% 35.4 1s 3779 1378 15.10949 25 163 17.00000 9.37805 44.8% 20.6 5s H 7671 1986 16.0000000 10.68421 33.2% 19.1 9s 7981 2005 cutoff 23 16.00000 10.74194 32.9% 19.0 10s 12231 1781 12.70588 20 177 16.00000 12.00000 25.0% 19.3 15s 16909 544 cutoff 22 16.00000 13.76543 14.0% 19.2 20s Explored 17653 nodes (338899 simplex iterations) in 20.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%