Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:12:12 2012 Optimize a model with 180 rows, 416 columns and 416 nonzeros Model has 358 quadratic constraints Presolve time: 2.09s Presolved: 180 rows, 416 columns, 416 nonzeros Variable types: 358 continuous, 58 integer (58 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 96.0000000 - - - 2s 0 0 0.00000 0 50 96.00000 0.00000 100% - 2s 0 0 0.42000 0 58 96.00000 0.42000 100% - 2s 0 0 0.42000 0 58 96.00000 0.42000 100% - 2s 0 2 0.42000 0 58 96.00000 0.42000 100% - 2s H 46 46 54.0000000 4.69231 91.3% 39.1 2s * 50 46 29 52.0000000 4.69231 91.0% 37.9 2s * 76 61 18 50.0000000 4.83333 90.3% 42.8 2s H 407 249 49.0000000 17.33333 64.6% 36.8 2s * 964 467 48 48.0000000 19.66667 59.0% 44.2 4s * 1356 547 57 47.0000000 19.66667 58.2% 39.6 4s 1552 585 45.91667 44 207 47.00000 19.66667 58.2% 37.6 5s * 2819 1086 48 46.0000000 23.92593 48.0% 30.5 6s 4249 1598 40.51064 29 245 46.00000 26.64706 42.1% 26.7 10s * 6178 1990 42 45.0000000 29.18750 35.1% 24.7 13s 7397 2187 41.25581 36 216 45.00000 30.50000 32.2% 24.0 15s 10146 2587 37.22000 40 251 45.00000 32.52174 27.7% 22.6 20s 14840 2817 cutoff 39 45.00000 35.04348 22.1% 21.4 25s 18098 2784 41.00000 37 232 45.00000 36.28571 19.4% 20.7 30s 22552 2423 42.86667 39 244 45.00000 38.00000 15.6% 20.1 35s 27698 1044 43.66667 36 221 45.00000 40.65517 9.66% 19.7 40s Explored 29314 nodes (570133 simplex iterations) in 41.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%