Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:25:13 2012 Optimize a model with 403 rows, 265 columns and 1270 nonzeros Presolve time: 0.00s Presolved: 403 rows, 265 columns, 1270 nonzeros Variable types: 0 continuous, 265 integer (265 binary) Found heuristic solution: objective 90.0000000 Root relaxation: objective 0.000000e+00, 103 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 64 90.00000 0.00000 100% - 0s H 0 0 80.0000000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s 0 0 0.51613 0 65 79.00000 0.51613 99.3% - 0s 0 0 1.07080 0 68 79.00000 1.07080 98.6% - 0s 0 0 1.18561 0 69 79.00000 1.18561 98.5% - 0s 0 0 1.23220 0 71 79.00000 1.23220 98.4% - 0s 0 0 1.28407 0 70 79.00000 1.28407 98.4% - 0s 0 0 1.33623 0 72 79.00000 1.33623 98.3% - 0s H 0 0 73.0000000 1.33623 98.2% - 0s 0 0 1.38041 0 69 73.00000 1.38041 98.1% - 0s 0 0 1.38513 0 70 73.00000 1.38513 98.1% - 0s H 0 0 70.0000000 1.38513 98.0% - 0s 0 2 1.42437 0 70 70.00000 1.42437 98.0% - 0s * 43 36 28 69.0000000 5.09202 92.6% 28.2 0s * 78 61 23 55.0000000 5.11810 90.7% 28.8 0s * 157 97 16 49.0000000 8.25749 83.1% 28.4 0s * 3112 728 28 48.0000000 29.40385 38.7% 26.6 3s 4648 921 45.40426 25 130 48.00000 31.74419 33.9% 25.4 5s 11303 1044 40.76000 23 125 48.00000 37.92308 21.0% 22.7 10s Explored 18399 nodes (388046 simplex iterations) in 14.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%