Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:21:40 2012 Optimize a model with 128 rows, 321 columns and 321 nonzeros Model has 254 quadratic constraints Presolve time: 1.48s Presolved: 128 rows, 321 columns, 321 nonzeros Variable types: 254 continuous, 67 integer (67 binary) Root relaxation: objective 0.000000e+00, 33 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 64.0000000 - - - 1s 0 0 0.00000 0 37 64.00000 0.00000 100% - 1s 0 0 0.07612 0 65 64.00000 0.07612 100% - 1s 0 2 0.16000 0 65 64.00000 0.16000 100% - 1s * 39 39 23 27.0000000 3.00000 88.9% 25.3 1s * 140 108 16 26.0000000 4.12903 84.1% 30.4 1s * 199 133 14 24.0000000 8.86190 63.1% 31.8 1s * 246 120 10 23.0000000 9.17648 60.1% 30.6 1s * 2692 364 34 22.0000000 17.07143 22.4% 21.2 4s Explored 3491 nodes (69330 simplex iterations) in 4.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%