Gurobi 5.0.1 (linux64) logging started Mon Nov 19 09:32:23 2012 Optimize a model with 6824 rows, 165 columns and 13648 nonzeros Presolve removed 4900 rows and 0 columns Presolve time: 0.31s Presolved: 1924 rows, 165 columns, 14457 nonzeros Variable types: 0 continuous, 165 integer (165 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.984308e+01, 865 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.84308 0 164 7.00000 19.84308 183% - 0s H 0 0 8.0000000 19.84308 148% - 0s 0 0 19.32621 0 165 8.00000 19.32621 142% - 0s 0 0 19.23367 0 165 8.00000 19.23367 140% - 1s H 0 0 9.0000000 19.23367 114% - 1s 0 0 19.19070 0 165 9.00000 19.19070 113% - 1s 0 0 19.14735 0 165 9.00000 19.14735 113% - 1s 0 0 19.10636 0 165 9.00000 19.10636 112% - 1s 0 0 19.06810 0 165 9.00000 19.06810 112% - 1s 0 0 19.04989 0 164 9.00000 19.04989 112% - 2s 0 0 19.02839 0 165 9.00000 19.02839 111% - 2s 0 0 19.02561 0 165 9.00000 19.02561 111% - 2s H 0 0 10.0000000 19.02561 90.3% - 2s 0 0 19.02371 0 165 10.00000 19.02371 90.2% - 2s 0 0 19.02368 0 165 10.00000 19.02368 90.2% - 3s 0 0 19.02331 0 164 10.00000 19.02331 90.2% - 3s 0 0 19.02319 0 165 10.00000 19.02319 90.2% - 3s 0 0 19.02318 0 165 10.00000 19.02318 90.2% - 3s 0 2 19.02009 0 165 10.00000 19.02009 90.2% - 4s 18 20 16.95631 18 145 10.00000 19.02009 90.2% 147 5s 472 304 13.95416 14 75 10.00000 17.42012 74.2% 91.2 10s 601 385 14.77494 8 165 10.00000 16.69495 66.9% 88.0 16s 614 396 16.69495 13 163 10.00000 16.69495 66.9% 90.8 20s 689 446 12.53757 50 65 10.00000 15.66043 56.6% 129 25s 1180 500 12.95008 34 69 10.00000 14.67706 46.8% 109 30s 1514 498 13.76046 26 78 10.00000 14.23664 42.4% 94.5 35s 1759 467 11.36104 22 42 10.00000 13.96752 39.7% 87.9 40s 2193 536 12.47497 35 71 10.00000 13.42255 34.2% 80.4 45s 2751 473 12.24344 49 61 10.00000 12.48409 24.8% 75.9 50s Cutting planes: Clique: 66 Explored 3579 nodes (234314 simplex iterations) in 53.74 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%