Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:02:20 2012 Optimize a model with 177 rows, 408 columns and 408 nonzeros Model has 352 quadratic constraints Presolve time: 2.04s Presolved: 177 rows, 408 columns, 408 nonzeros Variable types: 352 continuous, 56 integer (56 binary) Root relaxation: objective 0.000000e+00, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 85.0000000 - - - 2s 0 0 0.00000 0 56 85.00000 0.00000 100% - 2s 0 0 0.77778 0 56 85.00000 0.77778 99.1% - 2s 0 0 0.77778 0 56 85.00000 0.77778 99.1% - 2s 0 2 0.77778 0 56 85.00000 0.77778 99.1% - 2s H 54 54 59.0000000 3.83128 93.5% 32.0 2s * 56 54 34 57.0000000 3.83128 93.3% 31.1 2s H 92 69 49.0000000 3.98526 91.9% 33.7 2s * 241 176 19 48.0000000 12.08571 74.8% 37.5 2s H 281 201 47.0000000 12.11111 74.2% 38.1 2s 1580 671 24.96000 35 243 47.00000 17.21739 63.4% 36.1 5s * 2414 1013 46 46.0000000 20.26316 55.9% 30.4 5s H 4445 1922 45.0000000 23.68889 47.4% 24.8 8s 4697 2014 41.50000 38 242 45.00000 24.25000 46.1% 24.5 10s 7540 3021 38.90698 42 243 45.00000 27.00000 40.0% 22.1 15s 10434 3769 43.72093 44 250 45.00000 28.82353 35.9% 21.2 20s 13993 4463 39.77273 38 233 45.00000 30.44444 32.3% 20.4 25s 18485 5074 44.00000 48 214 45.00000 32.02222 28.8% 19.8 30s *20062 4828 49 43.0000000 32.57143 24.3% 19.6 31s 21098 4852 41.00000 38 242 43.00000 33.00000 23.3% 19.5 35s 25844 4684 37.04348 49 229 43.00000 34.69565 19.3% 19.2 40s 29839 4207 37.68750 46 254 43.00000 36.00000 16.3% 18.9 45s 34573 2958 cutoff 45 43.00000 37.64286 12.5% 18.8 50s Explored 39600 nodes (730646 simplex iterations) in 54.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000005e+01, best bound 4.300000000005e+01, gap 0.0%