Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:14:03 2012 Optimize a model with 409 rows, 290 columns and 1310 nonzeros Presolve time: 0.00s Presolved: 409 rows, 290 columns, 1310 nonzeros Variable types: 0 continuous, 290 integer (290 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 129 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 86 89.00000 0.00000 100% - 0s H 0 0 66.0000000 0.00000 100% - 0s 0 0 0.75610 0 88 66.00000 0.75610 98.9% - 0s 0 0 0.79268 0 88 66.00000 0.79268 98.8% - 0s 0 0 0.84553 0 91 66.00000 0.84553 98.7% - 0s 0 0 0.85366 0 88 66.00000 0.85366 98.7% - 0s 0 0 0.85366 0 88 66.00000 0.85366 98.7% - 0s 0 0 0.85366 0 88 66.00000 0.85366 98.7% - 0s 0 2 0.85366 0 88 66.00000 0.85366 98.7% - 0s H 32 32 50.0000000 3.58188 92.8% 35.9 0s * 41 41 28 46.0000000 3.58188 92.2% 31.3 0s * 45 36 27 45.0000000 3.58188 92.0% 28.7 0s H 2631 786 44.0000000 21.78571 50.5% 25.6 3s H 3558 1012 42.0000000 24.00000 42.9% 24.8 4s 4496 1178 cutoff 27 42.00000 25.04478 40.4% 24.5 5s 10386 1872 39.67742 24 129 42.00000 29.75000 29.2% 22.4 10s H10986 1754 40.0000000 30.00000 25.0% 22.3 10s 17651 1213 38.10769 23 131 40.00000 33.11765 17.2% 21.4 15s Explored 21632 nodes (449393 simplex iterations) in 17.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%