Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:38:13 2012 Optimize a model with 5257 rows, 146 columns and 10514 nonzeros Presolve removed 3743 rows and 0 columns Presolve time: 0.21s Presolved: 1514 rows, 146 columns, 10714 nonzeros Variable types: 0 continuous, 146 integer (146 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.886632e+01, 799 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.86632 0 145 7.00000 18.86632 170% - 0s H 0 0 8.0000000 18.86632 136% - 0s H 0 0 9.0000000 18.86632 110% - 0s 0 0 18.35702 0 145 9.00000 18.35702 104% - 0s 0 0 18.17637 0 146 9.00000 18.17637 102% - 0s 0 0 18.13488 0 146 9.00000 18.13488 101% - 0s 0 0 18.11218 0 146 9.00000 18.11218 101% - 1s 0 0 18.05201 0 146 9.00000 18.05201 101% - 1s 0 0 18.02838 0 146 9.00000 18.02838 100% - 1s 0 0 17.99323 0 146 9.00000 17.99323 100% - 1s H 0 0 10.0000000 17.99323 79.9% - 1s 0 0 17.98166 0 146 10.00000 17.98166 79.8% - 2s 0 0 17.97432 0 146 10.00000 17.97432 79.7% - 2s 0 0 17.97379 0 146 10.00000 17.97379 79.7% - 2s 0 0 17.97345 0 146 10.00000 17.97345 79.7% - 2s 0 0 17.97342 0 146 10.00000 17.97342 79.7% - 2s 0 2 17.97305 0 146 10.00000 17.97305 79.7% - 3s 220 148 11.59604 23 61 10.00000 17.13879 71.4% 79.8 5s 601 273 11.40919 60 146 10.00000 14.78585 47.9% 76.8 11s 634 297 14.78585 21 132 10.00000 14.78585 47.9% 89.5 15s 1315 313 11.67179 23 42 10.00000 13.68627 36.9% 81.0 20s 1742 296 11.11111 29 38 10.00000 12.95508 29.6% 71.8 25s Cutting planes: Clique: 63 Explored 2407 nodes (150155 simplex iterations) in 28.76 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%