Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:05:42 2012 Optimize a model with 193 rows, 468 columns and 468 nonzeros Model has 384 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 2.24s Presolved: 193 rows, 467 columns, 467 nonzeros Variable types: 384 continuous, 83 integer (82 binary) Root relaxation: objective 0.000000e+00, 41 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 101.0000000 - - - 2s 0 0 0.00000 0 28 101.00000 0.00000 100% - 2s 0 0 0.00000 0 75 101.00000 0.00000 100% - 2s 0 0 0.00000 0 75 101.00000 0.00000 100% - 2s 0 2 0.00000 0 74 101.00000 0.00000 100% - 2s H 54 54 50.0000000 6.00000 88.0% 34.2 2s H 99 84 46.0000000 6.15385 86.6% 32.8 2s * 184 147 20 43.0000000 6.92000 83.9% 33.5 2s * 304 228 24 42.0000000 7.54031 82.0% 33.1 2s * 595 292 17 38.0000000 13.27778 65.1% 31.9 2s 1016 478 28.49153 38 281 38.00000 15.04000 60.4% 44.2 5s 4735 1305 34.58824 37 299 38.00000 25.82353 32.0% 27.7 10s * 5199 1282 40 37.0000000 26.05882 29.6% 27.2 10s 7453 1272 31.50000 42 281 37.00000 28.50000 23.0% 25.5 15s 7792 1262 32.97183 42 275 37.00000 28.77778 22.2% 25.3 20s 9500 1105 cutoff 38 37.00000 30.41935 17.8% 24.5 25s Explored 12502 nodes (288119 simplex iterations) in 28.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.700000000000e+01, best bound 3.700000000000e+01, gap 0.0%