Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:36:45 2012 Optimize a model with 193 rows, 448 columns and 448 nonzeros Model has 384 quadratic constraints Presolve time: 2.24s Presolved: 193 rows, 448 columns, 448 nonzeros Variable types: 384 continuous, 64 integer (64 binary) Root relaxation: objective 0.000000e+00, 32 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 107.0000000 - - - 2s 0 0 0.00000 0 33 107.00000 0.00000 100% - 2s 0 0 0.00000 0 58 107.00000 0.00000 100% - 2s 0 0 0.00000 0 50 107.00000 0.00000 100% - 2s 0 2 0.04918 0 49 107.00000 0.04918 100% - 2s H 54 54 92.0000000 4.78482 94.8% 42.4 2s * 68 68 37 59.0000000 4.78482 91.9% 36.6 2s * 70 64 38 58.0000000 4.78482 91.8% 35.7 2s H 145 101 50.0000000 6.96774 86.1% 38.0 2s 959 516 38.16001 40 259 50.00000 14.69655 70.6% 51.6 5s 4858 1796 30.81579 31 273 50.00000 29.87327 40.3% 28.3 10s H 7754 2513 49.0000000 32.76559 33.1% 25.6 13s 8892 2676 43.75000 31 210 49.00000 33.66617 31.3% 25.1 15s 10088 2894 37.49057 31 256 49.00000 34.36364 29.9% 24.5 20s 11034 3035 46.84444 31 243 49.00000 35.00000 28.6% 24.1 25s 14676 3322 43.17578 30 276 49.00000 36.96000 24.6% 23.2 30s 18477 3417 46.89827 39 250 49.00000 38.35592 21.7% 22.6 35s 21285 3371 46.71350 35 267 49.00000 39.27778 19.8% 22.2 40s 25878 3057 45.33333 37 242 49.00000 40.91001 16.5% 21.4 45s 30241 2292 cutoff 35 49.00000 42.81818 12.6% 21.0 50s H30907 1898 48.0000000 43.21951 10.0% 21.0 50s Explored 33455 nodes (689947 simplex iterations) in 54.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000005e+01, best bound 4.800000000005e+01, gap 0.0%