Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:53:36 2012 Optimize a model with 303 rows, 849 columns and 849 nonzeros Model has 604 quadratic constraints Presolve removed 0 rows and 23 columns Presolve time: 3.52s Presolved: 303 rows, 826 columns, 826 nonzeros Variable types: 604 continuous, 222 integer (221 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 0 165.0000000 - - - 3s 0 0 0.00000 0 3 165.00000 0.00000 100% - 3s 0 0 0.00000 0 131 165.00000 0.00000 100% - 3s 0 0 0.00000 0 121 165.00000 0.00000 100% - 3s 0 2 0.00000 0 194 165.00000 0.00000 100% - 3s H 27 27 140.0000000 1.81132 98.7% 59.0 3s H 54 54 39.0000000 1.81132 95.4% 39.4 3s * 62 57 33 27.0000000 1.81132 93.3% 36.6 3s * 259 194 23 26.0000000 4.18605 83.9% 36.4 4s 603 341 15.31579 8 523 26.00000 7.91892 69.5% 33.6 5s * 994 489 61 25.0000000 7.91892 68.3% 44.1 6s H 1051 421 22.0000000 7.91892 64.0% 43.7 7s H 1079 384 21.0000000 7.91892 62.3% 44.0 7s 1968 338 15.37569 33 508 21.00000 13.18605 37.2% 44.4 10s 3045 329 18.95522 35 500 21.00000 15.54545 26.0% 42.9 15s 3399 279 19.67980 38 509 21.00000 16.23464 22.7% 42.6 20s Explored 4214 nodes (177540 simplex iterations) in 24.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%