Gurobi 5.0.1 (linux64) logging started Mon Nov 19 08:39:20 2012 Optimize a model with 6189 rows, 158 columns and 12378 nonzeros Presolve removed 4473 rows and 0 columns Presolve time: 0.26s Presolved: 1716 rows, 158 columns, 12716 nonzeros Variable types: 0 continuous, 158 integer (158 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.952714e+01, 738 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.52714 0 155 7.00000 19.52714 179% - 0s H 0 0 9.0000000 19.52714 117% - 0s 0 0 19.03327 0 158 9.00000 19.03327 111% - 0s 0 0 18.94457 0 157 9.00000 18.94457 110% - 0s H 0 0 10.0000000 18.94457 89.4% - 0s 0 0 18.90360 0 158 10.00000 18.90360 89.0% - 1s 0 0 18.86714 0 158 10.00000 18.86714 88.7% - 1s 0 0 18.78158 0 158 10.00000 18.78158 87.8% - 1s 0 0 18.74017 0 158 10.00000 18.74017 87.4% - 1s 0 0 18.70642 0 158 10.00000 18.70642 87.1% - 1s 0 0 18.69450 0 158 10.00000 18.69450 86.9% - 2s 0 0 18.68107 0 158 10.00000 18.68107 86.8% - 2s 0 0 18.67952 0 158 10.00000 18.67952 86.8% - 2s 0 0 18.67790 0 158 10.00000 18.67790 86.8% - 2s 0 0 18.67780 0 158 10.00000 18.67780 86.8% - 3s 0 2 18.67703 0 158 10.00000 18.67703 86.8% - 3s 109 95 15.34895 2 85 10.00000 18.40046 84.0% 108 5s 601 379 12.48974 18 158 10.00000 15.88672 58.9% 89.8 13s 614 388 12.05851 26 158 10.00000 15.88672 58.9% 87.9 15s 662 422 13.24512 37 66 10.00000 15.88672 58.9% 116 20s 1203 452 11.93211 38 59 10.00000 14.70044 47.0% 98.5 25s 1591 411 13.89393 22 74 10.00000 14.10562 41.1% 85.6 30s 2093 445 11.22102 26 39 10.00000 13.43684 34.4% 76.7 35s 2748 317 cutoff 41 10.00000 12.14896 21.5% 70.1 40s Cutting planes: Clique: 77 Explored 3241 nodes (205599 simplex iterations) in 41.89 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%