Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:48:15 2012 Optimize a model with 209 rows, 477 columns and 477 nonzeros Model has 416 quadratic constraints Presolve time: 2.41s Presolved: 209 rows, 477 columns, 477 nonzeros Variable types: 416 continuous, 61 integer (61 binary) Root relaxation: objective 0.000000e+00, 30 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 104.0000000 - - - 2s 0 0 0.00000 0 34 104.00000 0.00000 100% - 2s 0 0 0.09655 0 58 104.00000 0.09655 100% - 2s 0 2 0.20000 0 58 104.00000 0.20000 100% - 2s H 54 54 76.0000000 7.53947 90.1% 35.5 2s * 66 64 37 64.0000000 7.53947 88.2% 31.5 2s * 113 103 28 63.0000000 7.75000 87.7% 33.4 2s * 116 97 26 62.0000000 7.75000 87.5% 33.1 2s H 541 352 58.0000000 14.00000 75.9% 42.2 3s 806 476 17.00000 24 269 58.00000 17.00000 70.7% 51.9 5s * 4092 2037 37 57.0000000 25.53659 55.2% 29.9 9s * 4111 1937 47 55.0000000 25.53659 53.6% 29.8 9s 4242 1990 39.49057 39 297 55.00000 25.82526 53.0% 29.6 10s H 6057 2694 54.0000000 28.30769 47.6% 26.9 12s 6383 2845 42.58333 41 274 54.00000 28.97674 46.3% 26.6 15s 6765 3008 cutoff 44 54.00000 29.27273 45.8% 26.3 20s 8827 3702 52.00000 46 288 54.00000 31.11111 42.4% 25.1 25s 11044 4463 52.13725 47 274 54.00000 33.00000 38.9% 24.2 30s 14587 5548 48.00000 45 259 54.00000 35.00000 35.2% 23.0 35s 18361 6424 49.25747 38 265 54.00000 36.64962 32.1% 22.3 40s 21562 7068 44.04167 36 277 54.00000 38.00000 29.6% 21.9 45s *24614 7382 47 53.0000000 38.90909 26.6% 21.5 48s H24615 7112 52.0000000 38.90909 25.2% 21.5 49s 24878 7127 49.80851 43 274 52.00000 39.00000 25.0% 21.5 50s 28185 7218 50.92683 37 247 52.00000 40.03131 23.0% 21.4 55s 31570 7275 cutoff 39 52.00000 41.00000 21.2% 21.2 60s 34691 7189 44.94118 40 289 52.00000 42.00000 19.2% 21.0 65s 38440 6891 48.36585 33 252 52.00000 43.00000 17.3% 20.9 70s 39642 6768 50.78929 37 273 52.00000 43.33333 16.7% 20.9 75s 40807 6619 cutoff 49 52.00000 43.66667 16.0% 20.8 86s 43525 6081 49.04651 38 260 52.00000 44.50000 14.4% 20.8 90s 47417 5031 51.00000 43 268 52.00000 45.68620 12.1% 20.8 95s 51575 3192 cutoff 50 52.00000 47.23077 9.17% 20.7 100s Explored 55990 nodes (1130659 simplex iterations) in 103.77 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.200000000006e+01, best bound 5.200000000006e+01, gap 0.0%