Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:28 2012 Optimize a model with 1 rows, 43 columns and 43 nonzeros Model has 75 quadratic objective terms Presolve time: 0.00s Presolved: 76 rows, 118 columns, 268 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 92 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 26 33.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 26.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 23.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 40 19.00000 0.00000 100% - 0s 0 0 0.00000 0 23 19.00000 0.00000 100% - 0s 0 2 0.00000 0 23 19.00000 0.00000 100% - 0s H 176 121 18.0000000 1.00000 94.4% 7.3 0s H 185 117 17.0000000 1.00000 94.1% 7.1 0s * 187 112 17 16.0000000 1.00000 93.8% 7.1 0s H 220 100 15.0000000 1.87500 87.5% 8.4 0s * 290 98 12 14.0000000 2.70000 80.7% 10.5 0s * 311 87 11 13.0000000 3.00000 76.9% 11.1 0s Cutting planes: Cover: 144 MIR: 1 Explored 421 nodes (6665 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%