Gurobi 5.0.1 (linux64) logging started Sat Nov 17 21:22:23 2012 Optimize a model with 237 rows, 502 columns and 502 nonzeros Model has 472 quadratic constraints Presolve time: 2.75s Presolved: 237 rows, 502 columns, 502 nonzeros Variable types: 472 continuous, 30 integer (30 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 125.0000000 - - - 2s 0 0 0.00000 0 28 125.00000 0.00000 100% - 2s 0 0 0.50000 0 30 125.00000 0.50000 100% - 2s 0 0 0.50000 0 30 125.00000 0.50000 100% - 2s 0 2 0.50000 0 30 125.00000 0.50000 100% - 2s H 49 49 113.0000000 9.03254 92.0% 50.6 2s * 51 47 26 112.0000000 9.03254 91.9% 49.2 2s * 87 66 21 99.0000000 9.06838 90.8% 51.5 2s * 90 65 22 98.0000000 9.06838 90.7% 50.0 2s 687 417 32.67308 13 306 98.00000 32.67308 66.7% 56.0 5s 3549 1545 60.82549 31 313 98.00000 46.27232 52.8% 39.4 10s 7423 2873 97.80000 45 260 98.00000 56.00000 42.9% 32.0 15s 11369 3988 93.28807 48 231 98.00000 61.31579 37.4% 29.4 20s *12161 4063 43 97.0000000 62.00000 36.1% 29.2 21s *12164 3867 41 94.0000000 62.00000 34.0% 29.2 21s 14211 4154 74.70000 34 297 94.00000 64.00000 31.9% 28.8 25s H14398 4085 93.0000000 64.00000 31.2% 28.7 27s 14537 4107 84.88235 41 259 93.00000 64.10587 31.1% 28.8 30s 17815 4458 88.33315 36 270 93.00000 66.94037 28.0% 28.3 35s 21480 4664 87.74135 31 287 93.00000 70.00000 24.7% 28.0 40s 25071 4725 82.00000 36 273 93.00000 72.66667 21.9% 27.8 45s 27969 4712 91.09182 40 273 93.00000 74.41868 20.0% 27.5 50s 31774 4469 85.00000 32 267 93.00000 76.62500 17.6% 27.3 55s 35599 3969 90.76010 37 282 93.00000 78.82755 15.2% 27.1 60s 39803 3338 cutoff 39 93.00000 81.07079 12.8% 26.6 65s 44300 2180 cutoff 34 93.00000 84.13636 9.53% 26.2 70s Explored 48322 nodes (1227941 simplex iterations) in 74.30 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.300000000058e+01, best bound 9.300000000058e+01, gap 0.0%