Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:52 2012 Optimize a model with 1 rows, 44 columns and 44 nonzeros Model has 109 quadratic objective terms Modified 44 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 44 columns, 44 nonzeros Presolved model has 153 quadratic objective terms Variable types: 0 continuous, 44 integer (44 binary) Found heuristic solution: objective 58.0000000 Root relaxation: objective 0.000000e+00, 46 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 44 58.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 2 2.17630 0 44 30.00000 2.17630 92.7% - 0s H 5 5 28.0000000 3.46312 87.6% 1.6 0s H 7 7 27.0000000 3.46312 87.2% 1.7 0s H 379 310 26.0000000 5.73385 77.9% 2.4 0s H 628 430 25.0000000 6.56965 73.7% 2.5 0s H 632 412 24.0000000 6.56965 72.6% 2.5 0s Explored 56682 nodes (138066 simplex iterations) in 4.51 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%