Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:57:52 2012 Optimize a model with 303 rows, 843 columns and 843 nonzeros Model has 604 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.52s Presolved: 303 rows, 827 columns, 827 nonzeros Variable types: 604 continuous, 223 integer (222 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 0 150.0000000 - - - 3s 0 0 0.00000 0 7 150.00000 0.00000 100% - 3s 0 0 0.00000 0 100 150.00000 0.00000 100% - 3s 0 0 0.00000 0 161 150.00000 0.00000 100% - 3s 0 2 0.00000 0 159 150.00000 0.00000 100% - 3s H 54 54 65.0000000 2.73846 95.8% 36.4 3s H 64 63 29.0000000 2.73846 90.6% 33.2 3s * 65 59 44 28.0000000 2.73846 90.2% 33.0 3s 629 453 15.72727 21 428 28.00000 7.91802 71.7% 29.4 5s * 661 446 37 25.0000000 7.91802 68.3% 30.2 5s * 1621 495 38 21.0000000 11.71429 44.2% 37.7 8s 2151 336 cutoff 35 21.00000 14.16667 32.5% 38.2 10s 2860 268 18.00000 30 444 21.00000 15.63043 25.6% 36.7 15s 3340 161 19.21390 33 475 21.00000 17.38298 17.2% 36.5 20s Explored 3623 nodes (133816 simplex iterations) in 21.89 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%