Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:17:05 2012 Optimize a model with 297 rows, 827 columns and 827 nonzeros Model has 592 quadratic constraints Presolve removed 0 rows and 13 columns Presolve time: 3.50s Presolved: 297 rows, 814 columns, 814 nonzeros Variable types: 592 continuous, 222 integer (221 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 0 148.0000000 - - - 3s 0 0 0.00000 0 2 148.00000 0.00000 100% - 3s 0 0 0.00000 0 34 148.00000 0.00000 100% - 3s 0 0 0.00000 0 2 148.00000 0.00000 100% - 3s 0 2 0.00000 0 136 148.00000 0.00000 100% - 3s H 40 40 40.0000000 3.00000 92.5% 40.3 3s * 54 52 40 36.0000000 3.00000 91.7% 35.9 3s H 90 73 31.0000000 3.43548 88.9% 30.1 3s * 211 156 29 30.0000000 4.78102 84.1% 26.4 4s H 449 170 24.0000000 6.86693 71.4% 26.2 4s 620 230 11.97340 17 447 24.00000 8.35178 65.2% 33.8 5s 2202 595 cutoff 35 24.00000 14.14286 41.1% 33.6 10s 3981 1025 20.30769 31 451 24.00000 16.33333 31.9% 32.1 15s 5903 1319 cutoff 36 24.00000 17.70968 26.2% 30.3 20s 7899 1503 22.24211 33 479 24.00000 18.61290 22.4% 29.1 25s * 9566 1255 58 23.0000000 19.18320 16.6% 29.1 29s 9789 1189 cutoff 36 23.00000 19.41429 15.6% 29.2 30s 11627 73 21.84375 35 358 23.00000 21.84375 5.03% 29.7 35s Explored 11703 nodes (349233 simplex iterations) in 35.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%