Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:58:24 2012 Optimize a model with 479 rows, 335 columns and 1530 nonzeros Presolve time: 0.00s Presolved: 479 rows, 335 columns, 1530 nonzeros Variable types: 0 continuous, 335 integer (335 binary) Found heuristic solution: objective 113.0000000 Root relaxation: objective 0.000000e+00, 140 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 96 113.00000 0.00000 100% - 0s H 0 0 101.0000000 0.00000 100% - 0s H 0 0 95.0000000 0.00000 100% - 0s 0 0 0.64865 0 97 95.00000 0.64865 99.3% - 0s H 0 0 93.0000000 0.64865 99.3% - 0s 0 0 1.07335 0 101 93.00000 1.07335 98.8% - 0s 0 0 1.10020 0 100 93.00000 1.10020 98.8% - 0s 0 0 1.14064 0 103 93.00000 1.14064 98.8% - 0s H 0 0 84.0000000 1.14064 98.6% - 0s H 0 0 78.0000000 1.14064 98.5% - 0s 0 0 1.14510 0 106 78.00000 1.14510 98.5% - 0s 0 2 1.16119 0 106 78.00000 1.16119 98.5% - 0s H 40 40 67.0000000 4.16297 93.8% 39.0 0s H 40 40 65.0000000 4.16297 93.6% 39.0 0s * 52 50 28 54.0000000 4.16297 92.3% 35.2 0s * 718 474 35 53.0000000 14.71429 72.2% 31.9 1s * 772 479 33 50.0000000 14.71429 70.6% 32.4 1s H 2673 827 49.0000000 26.00000 46.9% 29.3 3s 3354 1008 40.26829 25 158 49.00000 28.33333 42.2% 28.7 5s H 3427 1012 48.0000000 28.51351 40.6% 28.6 5s 7689 1661 41.28750 25 157 48.00000 33.00000 31.2% 26.6 10s 12750 2080 45.27500 27 164 48.00000 35.78947 25.4% 25.2 15s 18287 2186 cutoff 28 48.00000 37.70000 21.5% 24.4 20s 24340 1920 41.49367 25 156 48.00000 39.09091 18.6% 23.7 25s 30700 1294 46.00000 27 158 48.00000 40.82278 15.0% 23.2 30s Explored 35667 nodes (812877 simplex iterations) in 33.79 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%