Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:09:34 2012 Optimize a model with 305 rows, 210 columns and 970 nonzeros Presolve time: 0.00s Presolved: 305 rows, 210 columns, 970 nonzeros Variable types: 0 continuous, 210 integer (210 binary) Found heuristic solution: objective 70.0000000 Root relaxation: objective 0.000000e+00, 99 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 57 70.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s 0 0 0.49123 0 59 54.00000 0.49123 99.1% - 0s H 0 0 50.0000000 0.49123 99.0% - 0s 0 0 0.53506 0 60 50.00000 0.53506 98.9% - 0s 0 0 0.56786 0 60 50.00000 0.56786 98.9% - 0s 0 0 0.62179 0 61 50.00000 0.62179 98.8% - 0s 0 0 0.69213 0 68 50.00000 0.69213 98.6% - 0s 0 0 0.71319 0 62 50.00000 0.71319 98.6% - 0s 0 0 0.76554 0 66 50.00000 0.76554 98.5% - 0s 0 0 0.80927 0 70 50.00000 0.80927 98.4% - 0s 0 0 0.81369 0 69 50.00000 0.81369 98.4% - 0s 0 0 0.83494 0 61 50.00000 0.83494 98.3% - 0s H 0 0 47.0000000 0.83494 98.2% - 0s 0 0 0.83735 0 64 47.00000 0.83735 98.2% - 0s 0 2 0.85230 0 64 47.00000 0.85230 98.2% - 0s * 43 36 27 44.0000000 4.51613 89.7% 23.4 0s * 74 53 20 40.0000000 4.57895 88.6% 21.7 0s * 155 110 20 38.0000000 8.47170 77.7% 20.1 0s * 484 243 15 37.0000000 15.72000 57.5% 18.7 0s H 792 341 36.0000000 17.00000 52.8% 22.1 0s * 1083 320 30 34.0000000 17.00000 50.0% 22.9 0s * 2180 239 29 33.0000000 23.75000 28.0% 22.4 1s Explored 3171 nodes (67897 simplex iterations) in 2.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%