Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:17:40 2012 Optimize a model with 284 rows, 793 columns and 793 nonzeros Model has 566 quadratic constraints Presolve removed 0 rows and 16 columns Presolve time: 3.28s Presolved: 284 rows, 777 columns, 777 nonzeros Variable types: 566 continuous, 211 integer (210 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 0 135.0000000 - - - 3s 0 0 0.00000 0 2 135.00000 0.00000 100% - 3s 0 0 0.00000 0 152 135.00000 0.00000 100% - 3s 0 0 0.00000 0 145 135.00000 0.00000 100% - 3s 0 2 0.00000 0 140 135.00000 0.00000 100% - 3s H 51 51 31.0000000 2.86792 90.7% 38.9 3s * 61 55 39 30.0000000 2.86792 90.4% 39.0 3s * 153 112 35 28.0000000 4.52632 83.8% 29.4 3s * 227 146 27 27.0000000 5.00000 81.5% 25.9 3s 606 353 10.00000 15 474 27.00000 10.00000 63.0% 27.9 5s * 879 439 58 26.0000000 10.00000 61.5% 38.9 6s * 997 454 47 25.0000000 10.00000 60.0% 40.1 7s 1859 623 14.00000 32 479 25.00000 10.52000 57.9% 38.0 10s H 2317 777 24.0000000 11.50000 52.1% 37.4 11s 2898 955 15.00000 33 461 24.00000 12.41176 48.3% 37.6 15s 3345 1085 19.80214 36 465 24.00000 13.00000 45.8% 38.3 20s 4313 1330 cutoff 43 24.00000 14.00000 41.7% 37.6 25s 5331 1592 22.00000 39 421 24.00000 14.81818 38.3% 37.4 30s * 5750 1584 43 23.0000000 15.00000 34.8% 37.4 32s 6445 1665 cutoff 36 23.00000 15.30303 33.5% 37.8 35s 7426 1726 20.43709 36 481 23.00000 16.00000 30.4% 37.3 40s 8499 1768 18.50000 36 422 23.00000 16.50000 28.3% 37.1 45s 9537 1788 21.36047 40 435 23.00000 17.00000 26.1% 36.8 50s 10771 1701 cutoff 37 23.00000 17.48571 24.0% 37.0 55s 12212 1554 21.00000 39 439 23.00000 18.00000 21.7% 36.9 60s 13387 1372 infeasible 41 23.00000 18.48000 19.7% 36.7 65s 14671 1089 21.50000 38 434 23.00000 19.00000 17.4% 37.0 70s 15962 697 20.65663 38 427 23.00000 19.65468 14.5% 37.3 75s Explored 17286 nodes (646141 simplex iterations) in 78.63 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%