Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:59:01 2012 Optimize a model with 1127 rows, 148 columns and 2254 nonzeros Presolve removed 466 rows and 0 columns Presolve time: 0.01s Presolved: 661 rows, 148 columns, 1782 nonzeros Variable types: 0 continuous, 148 integer (148 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 4.765114e+01, 468 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.65114 0 148 29.00000 47.65114 64.3% - 0s H 0 0 31.0000000 47.65114 53.7% - 0s 0 0 47.33849 0 148 31.00000 47.33849 52.7% - 0s 0 0 47.21966 0 148 31.00000 47.21966 52.3% - 0s 0 0 47.17652 0 146 31.00000 47.17652 52.2% - 0s H 0 0 32.0000000 47.17652 47.4% - 0s 0 0 47.14051 0 147 32.00000 47.14051 47.3% - 0s 0 0 47.10239 0 147 32.00000 47.10239 47.2% - 0s 0 0 46.96922 0 148 32.00000 46.96922 46.8% - 0s 0 0 46.86000 0 148 32.00000 46.86000 46.4% - 0s 0 0 46.82543 0 148 32.00000 46.82543 46.3% - 0s 0 0 46.76691 0 147 32.00000 46.76691 46.1% - 0s 0 0 46.68524 0 148 32.00000 46.68524 45.9% - 0s 0 0 46.63712 0 148 32.00000 46.63712 45.7% - 0s 0 0 46.55710 0 148 32.00000 46.55710 45.5% - 0s 0 0 46.47867 0 147 32.00000 46.47867 45.2% - 0s 0 0 46.34357 0 145 32.00000 46.34357 44.8% - 0s 0 0 46.12472 0 146 32.00000 46.12472 44.1% - 0s 0 0 46.08196 0 146 32.00000 46.08196 44.0% - 0s 0 0 46.04894 0 146 32.00000 46.04894 43.9% - 0s H 0 0 33.0000000 46.04894 39.5% - 0s 0 0 46.04480 0 147 33.00000 46.04480 39.5% - 0s 0 0 46.03219 0 147 33.00000 46.03219 39.5% - 0s 0 0 46.01173 0 147 33.00000 46.01173 39.4% - 0s 0 0 45.99306 0 146 33.00000 45.99306 39.4% - 0s 0 0 45.98738 0 147 33.00000 45.98738 39.4% - 0s 0 0 45.98734 0 147 33.00000 45.98734 39.4% - 0s 0 0 45.98734 0 147 33.00000 45.98734 39.4% - 0s 0 2 45.98592 0 146 33.00000 45.98592 39.4% - 0s H 33 23 34.0000000 45.51084 33.9% 86.9 0s H 36 25 35.0000000 45.51084 30.0% 80.0 0s 1861 776 36.08333 39 73 35.00000 42.63837 21.8% 49.3 5s H 3103 1189 36.0000000 41.46729 15.2% 44.2 7s 4659 1512 38.80556 23 94 36.00000 40.67712 13.0% 41.0 10s 8477 1784 37.37500 30 85 36.00000 39.38350 9.40% 36.7 15s 13217 1067 cutoff 27 36.00000 38.27692 6.32% 34.1 20s Explored 15411 nodes (502870 simplex iterations) in 21.66 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.600000000000e+01, best bound 3.600000000000e+01, gap 0.0%