Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:50 2012 Optimize a model with 144 rows, 358 columns and 358 nonzeros Model has 286 quadratic constraints Presolve time: 1.67s Presolved: 144 rows, 358 columns, 358 nonzeros Variable types: 286 continuous, 72 integer (72 binary) Root relaxation: objective 0.000000e+00, 36 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 72.0000000 - - - 1s 0 0 0.00000 0 55 72.00000 0.00000 100% - 1s 0 0 0.28721 0 71 72.00000 0.28721 100% - 1s H 0 0 71.0000000 0.28721 100% - 1s 0 2 0.30303 0 71 71.00000 0.30303 100% - 1s * 44 44 27 29.0000000 3.50000 87.9% 24.8 1s * 78 61 20 28.0000000 3.81818 86.4% 26.9 1s * 112 80 21 27.0000000 4.46340 83.5% 26.4 1s * 211 137 15 26.0000000 7.74000 70.2% 33.5 1s 2905 790 24.72581 31 225 26.00000 16.22222 37.6% 23.6 5s 9326 591 cutoff 31 26.00000 22.45455 13.6% 18.5 10s Explored 10703 nodes (193370 simplex iterations) in 10.95 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.600000000000e+01, best bound 2.600000000000e+01, gap 0.0%