Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:51:11 2012 Optimize a model with 399 rows, 261 columns and 1256 nonzeros Presolve time: 0.00s Presolved: 399 rows, 261 columns, 1256 nonzeros Variable types: 0 continuous, 261 integer (261 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 90 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 62 89.00000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.51613 0 64 76.00000 0.51613 99.3% - 0s 0 0 0.70652 0 65 76.00000 0.70652 99.1% - 0s 0 0 0.78169 0 66 76.00000 0.78169 99.0% - 0s 0 0 0.88024 0 72 76.00000 0.88024 98.8% - 0s 0 0 0.91935 0 64 76.00000 0.91935 98.8% - 0s 0 0 0.93548 0 65 76.00000 0.93548 98.8% - 0s 0 0 0.96552 0 73 76.00000 0.96552 98.7% - 0s H 0 0 72.0000000 0.96552 98.7% - 0s 0 0 0.96875 0 67 72.00000 0.96875 98.7% - 0s 0 0 0.97487 0 78 72.00000 0.97487 98.6% - 0s 0 2 0.98706 0 78 72.00000 0.98706 98.6% - 0s H 54 54 64.0000000 4.88275 92.4% 25.6 0s * 56 54 33 63.0000000 4.88275 92.2% 24.9 0s * 211 175 30 61.0000000 8.59772 85.9% 26.2 0s H 284 225 58.0000000 13.51443 76.7% 25.7 0s H 537 319 53.0000000 16.51786 68.8% 23.2 0s H 1816 517 52.0000000 24.37500 53.1% 25.2 1s H 2963 873 51.0000000 30.26829 40.7% 24.2 3s H 3828 1029 50.0000000 31.48837 37.0% 23.4 3s 5199 1271 48.48837 26 125 50.00000 32.90909 34.2% 22.7 5s *10875 1587 28 49.0000000 38.30000 21.8% 21.9 9s 11603 1557 43.55102 22 126 49.00000 38.59184 21.2% 21.8 10s 19561 746 cutoff 26 49.00000 42.59184 13.1% 20.9 15s Explored 21657 nodes (444262 simplex iterations) in 16.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0%