Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:57:55 2012 Optimize a model with 295 rows, 834 columns and 834 nonzeros Model has 588 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 3.43s Presolved: 295 rows, 804 columns, 804 nonzeros Variable types: 588 continuous, 216 integer (215 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 0 146.0000000 - - - 3s 0 0 0.00000 0 100 146.00000 0.00000 100% - 3s 0 0 0.00000 0 31 146.00000 0.00000 100% - 3s 0 0 0.00000 0 185 146.00000 0.00000 100% - 3s 0 2 0.00000 0 182 146.00000 0.00000 100% - 3s H 52 52 25.0000000 2.55949 89.8% 39.4 3s * 55 55 29 24.0000000 2.55949 89.3% 41.1 3s H 162 132 23.0000000 5.07692 77.9% 33.1 3s H 366 203 22.0000000 7.07692 67.8% 32.2 4s 652 314 10.40116 20 666 22.00000 8.48077 61.5% 37.5 5s * 673 305 30 21.0000000 8.48077 59.6% 39.7 5s 1134 339 13.85714 34 438 21.00000 11.44681 45.5% 48.1 10s H 1216 306 20.0000000 12.40408 38.0% 46.8 10s * 1547 143 41 19.0000000 14.17647 25.4% 43.3 11s Explored 1809 nodes (77008 simplex iterations) in 11.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%