Gurobi 5.0.1 (linux64) logging started Sun Nov 18 00:57:44 2012 Optimize a model with 329 rows, 219 columns and 1039 nonzeros Presolve time: 0.00s Presolved: 329 rows, 219 columns, 1039 nonzeros Variable types: 0 continuous, 219 integer (219 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 89 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 55 70.00000 0.00000 100% - 0s H 0 0 64.0000000 0.00000 100% - 0s 0 0 0.52867 0 56 64.00000 0.52867 99.2% - 0s H 0 0 62.0000000 0.52867 99.1% - 0s 0 0 1.18907 0 58 62.00000 1.18907 98.1% - 0s H 0 0 56.0000000 1.18907 97.9% - 0s 0 0 1.23357 0 58 56.00000 1.23357 97.8% - 0s 0 0 1.25715 0 58 56.00000 1.25715 97.8% - 0s 0 0 1.25718 0 61 56.00000 1.25718 97.8% - 0s 0 2 1.26573 0 61 56.00000 1.26573 97.7% - 0s H 32 32 54.0000000 5.12547 90.5% 32.6 0s H 32 32 53.0000000 5.12547 90.3% 32.6 0s * 33 32 20 52.0000000 5.12547 90.1% 32.4 0s * 98 82 19 49.0000000 7.65501 84.4% 30.1 0s * 101 78 19 48.0000000 7.65501 84.1% 29.3 0s * 188 130 13 45.0000000 12.62916 71.9% 30.4 0s * 233 151 20 43.0000000 12.64169 70.6% 29.2 0s * 270 142 15 42.0000000 13.50874 67.8% 27.6 0s * 372 174 16 41.0000000 18.07708 55.9% 26.2 0s * 552 203 13 40.0000000 21.84769 45.4% 24.6 0s 6748 207 36.71429 19 107 40.00000 33.60000 16.0% 21.4 5s Explored 7276 nodes (153627 simplex iterations) in 5.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%