Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:30 2012 Optimize a model with 1 rows, 59 columns and 59 nonzeros Model has 91 quadratic objective terms Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 92 rows, 149 columns, 331 nonzeros Variable types: 0 continuous, 149 integer (148 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 113 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 34 33.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 30.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 22.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 40 20.00000 0.00000 100% - 0s 0 0 0.00000 0 31 20.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 31 16.00000 0.00000 100% - 0s 0 0 0.00000 0 27 16.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 27 15.00000 0.00000 100% - 0s * 198 125 13 14.0000000 0.00000 100% 8.4 0s H 253 125 13.0000000 1.00000 92.3% 9.4 0s Cutting planes: Cover: 174 MIR: 2 Zero half: 2 Explored 554 nodes (11367 simplex iterations) in 0.21 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%