Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:05:21 2012 Optimize a model with 417 rows, 271 columns and 1311 nonzeros Presolve time: 0.00s Presolved: 417 rows, 271 columns, 1311 nonzeros Variable types: 0 continuous, 271 integer (271 binary) Found heuristic solution: objective 91.0000000 Root relaxation: objective 0.000000e+00, 93 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 63 91.00000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s H 0 0 89.0000000 0.00000 100% - 0s 0 0 0.68027 0 65 89.00000 0.68027 99.2% - 0s 0 0 0.72180 0 65 89.00000 0.72180 99.2% - 0s 0 0 0.72562 0 65 89.00000 0.72562 99.2% - 0s 0 0 0.78912 0 65 89.00000 0.78912 99.1% - 0s 0 0 0.79819 0 65 89.00000 0.79819 99.1% - 0s H 0 0 84.0000000 0.79819 99.0% - 0s H 0 0 82.0000000 0.79819 99.0% - 0s 0 2 0.81356 0 65 82.00000 0.81356 99.0% - 0s * 48 46 26 69.0000000 4.67347 93.2% 25.7 0s * 99 79 25 67.0000000 4.70677 93.0% 25.1 0s H 189 147 65.0000000 8.51128 86.9% 26.9 0s * 205 143 19 59.0000000 8.51128 85.6% 26.7 0s * 359 262 18 58.0000000 13.59821 76.6% 28.3 0s * 680 384 28 57.0000000 16.36640 71.3% 28.1 1s * 681 365 29 56.0000000 16.36640 70.8% 28.0 1s * 1309 462 30 55.0000000 24.00000 56.4% 29.9 1s * 1419 444 26 54.0000000 25.55556 52.7% 29.6 1s H 2563 677 53.0000000 31.00000 41.5% 27.5 2s 4451 1004 51.87234 22 133 53.00000 34.80000 34.3% 26.0 5s 10404 1419 42.92000 19 124 53.00000 40.20000 24.2% 24.3 10s 17218 1067 51.11111 23 135 53.00000 43.30769 18.3% 23.3 15s *19535 677 24 52.0000000 44.86486 13.7% 23.1 16s Explored 21093 nodes (479873 simplex iterations) in 17.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.200000000000e+01, best bound 5.200000000000e+01, gap 0.0%