Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:45:48 2012 Optimize a model with 493 rows, 341 columns and 1571 nonzeros Presolve time: 0.00s Presolved: 493 rows, 341 columns, 1571 nonzeros Variable types: 0 continuous, 341 integer (341 binary) Found heuristic solution: objective 113.0000000 Root relaxation: objective 0.000000e+00, 129 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 94 113.00000 0.00000 100% - 0s H 0 0 90.0000000 0.00000 100% - 0s 0 0 0.62162 0 95 90.00000 0.62162 99.3% - 0s H 0 0 88.0000000 0.62162 99.3% - 0s 0 0 1.08502 0 96 88.00000 1.08502 98.8% - 0s H 0 0 87.0000000 1.08502 98.8% - 0s 0 0 1.10869 0 98 87.00000 1.10869 98.7% - 0s 0 0 1.19057 0 99 87.00000 1.19057 98.6% - 0s 0 0 1.20589 0 99 87.00000 1.20589 98.6% - 0s H 0 0 82.0000000 1.20589 98.5% - 0s 0 0 1.20934 0 100 82.00000 1.20934 98.5% - 0s 0 0 1.20934 0 100 82.00000 1.20934 98.5% - 0s 0 2 1.23156 0 100 82.00000 1.23156 98.5% - 0s H 40 40 60.0000000 4.50088 92.5% 39.9 0s * 53 46 32 59.0000000 4.50088 92.4% 34.2 0s * 238 189 30 57.0000000 9.41549 83.5% 34.3 0s * 454 349 23 56.0000000 13.76975 75.4% 33.9 0s H 1969 750 53.0000000 25.51852 51.9% 29.2 2s H 3050 1099 52.0000000 28.87179 44.5% 28.0 4s 3368 1163 36.48235 20 152 52.00000 29.64706 43.0% 27.8 5s 7606 1848 37.46988 20 150 52.00000 33.92453 34.8% 26.5 10s 12214 2330 41.55422 21 158 52.00000 37.16667 28.5% 25.8 15s 17243 2613 49.58442 25 164 52.00000 39.28261 24.5% 25.4 20s 22875 2663 50.66667 25 167 52.00000 40.78947 21.6% 24.8 25s 28506 2539 49.95000 24 166 52.00000 42.17647 18.9% 24.4 30s 34551 2179 cutoff 25 52.00000 43.27451 16.8% 23.9 35s 40256 1663 cutoff 25 52.00000 44.40741 14.6% 23.7 40s 46625 598 cutoff 27 52.00000 47.40000 8.85% 23.3 45s Explored 47725 nodes (1105426 simplex iterations) in 45.68 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%