Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:49:12 2012 Optimize a model with 475 rows, 332 columns and 1517 nonzeros Presolve time: 0.00s Presolved: 475 rows, 332 columns, 1517 nonzeros Variable types: 0 continuous, 332 integer (332 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 0.000000e+00, 123 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 95 99.00000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s 0 0 0.74092 0 97 92.00000 0.74092 99.2% - 0s H 0 0 87.0000000 0.74092 99.1% - 0s 0 0 0.74092 0 97 87.00000 0.74092 99.1% - 0s 0 0 0.74092 0 97 87.00000 0.74092 99.1% - 0s H 0 0 83.0000000 0.74092 99.1% - 0s H 0 0 77.0000000 0.74092 99.0% - 0s 0 2 0.79576 0 97 77.00000 0.79576 99.0% - 0s H 54 54 68.0000000 3.15197 95.4% 30.3 0s * 60 53 37 64.0000000 3.15197 95.1% 28.5 0s * 103 82 25 56.0000000 3.17873 94.3% 29.5 0s * 307 242 29 55.0000000 11.35610 79.4% 30.5 0s * 814 490 42 54.0000000 13.48000 75.0% 29.7 1s H 878 486 51.0000000 13.48000 73.6% 29.7 1s H 1927 663 50.0000000 23.05882 53.9% 26.6 2s H 2340 820 49.0000000 24.15873 50.7% 26.1 3s H 2450 839 48.0000000 24.24000 49.5% 25.9 3s 3499 1174 44.09877 25 159 48.00000 26.00000 45.8% 25.1 5s 7859 2148 46.00000 25 158 48.00000 30.53968 36.4% 23.6 10s 12697 2844 cutoff 27 48.00000 34.00000 29.2% 22.6 15s 18115 3342 43.44444 25 159 48.00000 35.48193 26.1% 22.0 20s 24005 3610 46.74667 27 161 48.00000 36.75904 23.4% 21.5 25s 30145 3638 46.86076 27 166 48.00000 37.88235 21.1% 21.2 30s 36374 3354 cutoff 28 48.00000 38.72727 19.3% 21.0 35s 42077 2944 41.60494 24 154 48.00000 39.51064 17.7% 20.7 40s 48466 2345 46.47945 27 156 48.00000 40.20000 16.3% 20.5 45s 54535 1552 46.43421 26 157 48.00000 41.64865 13.2% 20.4 50s Cutting planes: Gomory: 1 Zero half: 4 Explored 59151 nodes (1190643 simplex iterations) in 53.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.800000000000e+01, best bound 4.800000000000e+01, gap 0.0%