Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:55:54 2012 Optimize a model with 297 rows, 831 columns and 831 nonzeros Model has 592 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 3.46s Presolved: 297 rows, 807 columns, 807 nonzeros Variable types: 592 continuous, 215 integer (214 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 153.0000000 - - - 3s 0 0 0.00000 0 2 153.00000 0.00000 100% - 3s 0 0 0.00000 0 178 153.00000 0.00000 100% - 3s 0 0 0.00000 0 175 153.00000 0.00000 100% - 3s 0 2 0.00000 0 174 153.00000 0.00000 100% - 3s H 52 52 27.0000000 3.00000 88.9% 36.0 3s H 54 53 26.0000000 3.00000 88.5% 36.2 3s 607 318 8.78723 11 794 26.00000 8.78723 66.2% 35.6 5s 2068 683 15.07143 29 495 26.00000 12.91453 50.3% 36.8 10s 3763 1325 25.28000 35 376 26.00000 15.28788 41.2% 33.3 15s * 3944 1224 52 25.0000000 15.47590 38.1% 32.9 15s 5424 1403 18.00000 30 476 25.00000 17.00000 32.0% 33.2 20s H 5434 1253 24.0000000 17.00000 29.2% 33.2 20s 6108 1268 22.76433 32 436 24.00000 17.57955 26.8% 33.2 25s 6418 1254 22.42640 35 491 24.00000 17.82353 25.7% 32.9 30s 6724 1234 20.23256 29 446 24.00000 18.00000 25.0% 33.4 35s 7029 1204 21.36464 28 461 24.00000 18.28099 23.8% 33.2 40s 7994 1074 cutoff 32 24.00000 19.00000 20.8% 33.2 45s 8697 962 20.77273 29 461 24.00000 19.50000 18.8% 33.1 50s 9593 741 22.39394 31 429 24.00000 20.15789 16.0% 33.5 55s 10814 154 cutoff 38 24.00000 22.36842 6.80% 33.3 60s Explored 10971 nodes (365900 simplex iterations) in 60.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%