Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:56:54 2012 Optimize a model with 304 rows, 845 columns and 845 nonzeros Model has 606 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 3.53s Presolved: 304 rows, 823 columns, 823 nonzeros Variable types: 606 continuous, 217 integer (216 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 0 152.0000000 - - - 3s 0 0 0.00000 0 4 152.00000 0.00000 100% - 3s 0 0 0.00000 0 2 152.00000 0.00000 100% - 3s 0 0 0.00000 0 2 152.00000 0.00000 100% - 3s 0 2 0.00000 0 2 152.00000 0.00000 100% - 3s H 27 27 37.0000000 1.21827 96.7% 72.9 3s H 38 38 30.0000000 1.21827 95.9% 56.8 3s * 38 32 29 29.0000000 1.21827 95.8% 58.6 3s 608 383 8.01534 14 499 29.00000 8.01534 72.4% 34.1 5s 2404 973 17.46938 32 494 29.00000 13.27531 54.2% 33.9 10s H 2422 838 28.0000000 13.27531 52.6% 34.1 10s H 2885 948 27.0000000 14.06380 47.9% 34.1 11s * 3160 946 47 26.0000000 14.68271 43.5% 33.6 11s H 4054 994 25.0000000 15.62861 37.5% 33.0 14s 4163 1014 22.06569 35 482 25.00000 15.72019 37.1% 33.0 15s 4580 1052 22.06760 34 473 25.00000 16.11429 35.5% 33.8 20s 5003 1085 23.03450 35 468 25.00000 16.54966 33.8% 33.5 25s 6257 1147 20.93407 38 470 25.00000 17.64717 29.4% 33.0 30s 7508 1162 23.06390 36 487 25.00000 18.42631 26.3% 33.2 35s 8542 1138 22.89474 40 445 25.00000 18.95453 24.2% 33.7 40s 9572 1085 21.44285 35 481 25.00000 19.42252 22.3% 33.4 45s 11059 940 22.66827 35 479 25.00000 20.12861 19.5% 33.4 50s 12832 620 23.84583 36 450 25.00000 21.12085 15.5% 32.8 55s Explored 14227 nodes (461259 simplex iterations) in 58.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%