Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:01 2012 Optimize a model with 1 rows, 53 columns and 53 nonzeros Model has 98 quadratic objective terms Presolve time: 0.00s Presolved: 99 rows, 151 columns, 347 nonzeros Variable types: 0 continuous, 151 integer (151 binary) Found heuristic solution: objective 45.0000000 Root relaxation: objective 0.000000e+00, 120 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 43 45.00000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.00000 0 43 38.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 30.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 28.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 24.00000 0.00000 100% - 0s 0 0 0.00000 0 36 24.00000 0.00000 100% - 0s 0 2 0.00000 0 36 24.00000 0.00000 100% - 0s H 211 148 23.0000000 0.66667 97.1% 7.3 0s H 214 149 22.0000000 0.66667 97.0% 7.3 0s * 255 157 16 21.0000000 1.00000 95.2% 7.1 0s H 264 151 19.0000000 1.00000 94.7% 7.8 0s Cutting planes: Cover: 189 MIR: 2 Explored 916 nodes (18014 simplex iterations) in 0.35 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%