Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:57:16 2012 Optimize a model with 1 rows, 24 columns and 24 nonzeros Model has 140 quadratic objective terms Modified 24 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 24 columns, 24 nonzeros Presolved model has 164 quadratic objective terms Variable types: 0 continuous, 24 integer (24 binary) Found heuristic solution: objective 75.0000000 Root relaxation: objective 0.000000e+00, 26 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 24 75.00000 0.00000 100% - 0s H 0 0 72.0000000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 2 2.56521 0 24 64.00000 2.56521 96.0% - 0s H 7 7 61.0000000 7.06607 88.4% 1.7 0s H 254 215 60.0000000 12.80796 78.7% 2.0 0s * 403 288 13 56.0000000 13.06145 76.7% 2.0 0s H 561 362 54.0000000 15.82623 70.7% 2.0 0s H 847 453 53.0000000 18.03145 66.0% 2.1 0s Explored 46102 nodes (93424 simplex iterations) in 2.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%