Gurobi 5.0.1 (linux64) logging started Sat Nov 17 20:24:14 2012 Optimize a model with 186 rows, 398 columns and 398 nonzeros Model has 370 quadratic constraints Presolve time: 2.15s Presolved: 186 rows, 398 columns, 398 nonzeros Variable types: 370 continuous, 28 integer (28 binary) Root relaxation: objective 0.000000e+00, 14 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 97.0000000 - - - 2s 0 0 0.00000 0 26 97.00000 0.00000 100% - 2s 0 0 0.66667 0 28 97.00000 0.66667 99.3% - 2s 0 0 0.66667 0 28 97.00000 0.66667 99.3% - 2s 0 2 0.66667 0 28 97.00000 0.66667 99.3% - 2s * 43 43 23 86.0000000 7.90476 90.8% 38.4 2s H 77 67 81.0000000 8.05556 90.1% 39.2 2s * 108 86 17 79.0000000 10.92063 86.2% 41.6 2s * 115 84 22 77.0000000 10.92063 85.8% 39.4 2s H 164 123 76.0000000 10.96296 85.6% 44.6 2s 1284 551 60.57143 44 228 76.00000 30.44444 59.9% 46.3 5s * 1368 538 45 75.0000000 30.44444 59.4% 44.9 5s H 3370 1043 73.0000000 43.60000 40.3% 31.3 7s 4747 1332 63.00000 37 207 73.00000 48.61538 33.4% 28.8 10s 8720 1732 70.50000 43 197 73.00000 56.00000 23.3% 25.5 15s 14264 1450 70.53333 47 188 73.00000 62.50000 14.4% 23.4 20s Explored 17912 nodes (403368 simplex iterations) in 23.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.300000000000e+01, best bound 7.300000000000e+01, gap 0.0%