Gurobi 5.0.1 (linux64) logging started Sun Nov 18 08:27:02 2012 Optimize a model with 599 rows, 536 columns and 2031 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 599 rows, 513 columns, 2008 nonzeros Variable types: 0 continuous, 513 integer (512 binary) Found heuristic solution: objective 118.0000000 Root relaxation: objective 0.000000e+00, 295 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 0 211 118.00000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.42896 0 212 74.00000 0.42896 99.4% - 0s H 0 0 63.0000000 0.42896 99.3% - 0s H 0 0 60.0000000 0.42896 99.3% - 0s 0 0 0.99279 0 213 60.00000 0.99279 98.3% - 0s H 0 0 57.0000000 0.99279 98.3% - 0s 0 0 1.17394 0 215 57.00000 1.17394 97.9% - 0s H 0 0 55.0000000 1.17394 97.9% - 0s 0 0 1.17494 0 216 55.00000 1.17494 97.9% - 0s 0 0 1.17494 0 216 55.00000 1.17494 97.9% - 0s H 0 0 54.0000000 1.17494 97.8% - 0s H 0 0 53.0000000 1.17494 97.8% - 0s H 0 0 52.0000000 1.17494 97.7% - 0s 0 2 1.17936 0 216 52.00000 1.17936 97.7% - 0s H 27 27 46.0000000 1.34673 97.1% 48.3 0s * 53 50 28 25.0000000 1.34673 94.6% 39.2 0s H 191 131 23.0000000 2.00000 91.3% 38.8 0s 2813 948 16.43750 22 220 23.00000 12.55844 45.4% 28.3 5s 6263 1461 21.95804 24 175 23.00000 15.08621 34.4% 26.0 10s * 7008 1382 31 22.0000000 15.52632 29.4% 26.1 11s 9548 1072 20.29545 26 216 22.00000 17.21429 21.8% 26.6 15s Explored 12432 nodes (319050 simplex iterations) in 18.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%