Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:23:45 2012 Optimize a model with 240 rows, 693 columns and 693 nonzeros Model has 478 quadratic constraints Presolve removed 0 rows and 24 columns Presolve time: 2.79s Presolved: 240 rows, 669 columns, 669 nonzeros Variable types: 478 continuous, 191 integer (190 binary) Root relaxation: objective 0.000000e+00, 83 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 111.0000000 - - - 2s 0 0 0.00000 0 2 111.00000 0.00000 100% - 2s 0 0 0.00000 0 74 111.00000 0.00000 100% - 2s 0 0 0.00000 0 63 111.00000 0.00000 100% - 2s 0 2 0.00000 0 137 111.00000 0.00000 100% - 2s H 39 39 22.0000000 1.84848 91.6% 43.2 2s * 53 45 35 19.0000000 1.84848 90.3% 36.2 3s * 162 112 26 18.0000000 2.11111 88.3% 28.1 3s * 203 111 22 17.0000000 2.70833 84.1% 27.8 3s * 248 113 14 16.0000000 2.86441 82.1% 30.2 3s 606 194 7.00000 16 409 16.00000 7.00000 56.2% 30.1 5s * 1137 200 51 15.0000000 8.84375 41.0% 37.4 6s Explored 1746 nodes (60179 simplex iterations) in 7.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%