Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:04 2012 Optimize a model with 1 rows, 45 columns and 45 nonzeros Model has 112 quadratic objective terms Modified 45 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 45 columns, 45 nonzeros Presolved model has 157 quadratic objective terms Variable types: 0 continuous, 45 integer (45 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 45 57.00000 0.00000 100% - 0s H 0 0 49.0000000 0.00000 100% - 0s H 0 0 44.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 2 2.05456 0 45 29.00000 2.05456 92.9% - 0s H 1141 598 28.0000000 10.01078 64.2% 2.5 0s H 1228 571 27.0000000 10.82885 59.9% 2.5 0s 67515 14975 25.71214 29 29 27.00000 21.96086 18.7% 2.6 5s 136190 8266 24.54373 33 25 27.00000 24.24053 10.2% 2.6 10s Explored 154247 nodes (393841 simplex iterations) in 11.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%