Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:08:31 2012 Optimize a model with 385 rows, 277 columns and 1237 nonzeros Presolve time: 0.00s Presolved: 385 rows, 277 columns, 1237 nonzeros Variable types: 0 continuous, 277 integer (277 binary) Found heuristic solution: objective 81.0000000 Root relaxation: objective 0.000000e+00, 112 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 85 81.00000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s 0 0 0.56920 0 88 70.00000 0.56920 99.2% - 0s H 0 0 65.0000000 0.56920 99.1% - 0s 0 0 0.58634 0 89 65.00000 0.58634 99.1% - 0s H 0 0 62.0000000 0.58634 99.1% - 0s 0 0 0.61289 0 88 62.00000 0.61289 99.0% - 0s 0 0 0.70534 0 88 62.00000 0.70534 98.9% - 0s 0 0 0.76447 0 92 62.00000 0.76447 98.8% - 0s 0 0 0.82537 0 91 62.00000 0.82537 98.7% - 0s 0 0 0.83821 0 95 62.00000 0.83821 98.6% - 0s 0 0 0.84500 0 88 62.00000 0.84500 98.6% - 0s 0 0 0.85465 0 96 62.00000 0.85465 98.6% - 0s 0 0 0.85465 0 96 62.00000 0.85465 98.6% - 0s 0 2 0.86379 0 96 62.00000 0.86379 98.6% - 0s * 28 28 14 40.0000000 4.15835 89.6% 35.0 0s * 68 52 21 39.0000000 4.25971 89.1% 26.5 0s H 1893 502 38.0000000 20.25926 46.7% 24.2 1s * 3480 746 26 37.0000000 24.00000 35.1% 23.8 3s * 3784 720 28 36.0000000 24.44000 32.1% 23.9 3s 5056 726 33.19048 22 121 36.00000 25.91176 28.0% 23.3 5s * 5117 672 24 35.0000000 26.00000 25.7% 23.3 5s Explored 7988 nodes (179095 simplex iterations) in 7.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+01, best bound 3.500000000000e+01, gap 0.0%