Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:39 2012 Optimize a model with 201 rows, 120 columns and 620 nonzeros Presolve time: 0.00s Presolved: 201 rows, 120 columns, 620 nonzeros Variable types: 0 continuous, 120 integer (120 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 0.000000e+00, 38 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 20 52.00000 0.00000 100% - 0s H 0 0 51.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s 0 0 0.71429 0 21 47.00000 0.71429 98.5% - 0s 0 0 1.29155 0 35 47.00000 1.29155 97.3% - 0s 0 0 1.48447 0 36 47.00000 1.48447 96.8% - 0s 0 0 1.50000 0 23 47.00000 1.50000 96.8% - 0s 0 0 1.50000 0 23 47.00000 1.50000 96.8% - 0s 0 0 1.50000 0 21 47.00000 1.50000 96.8% - 0s 0 0 1.50000 0 21 47.00000 1.50000 96.8% - 0s 0 0 1.50000 0 21 47.00000 1.50000 96.8% - 0s H 0 0 46.0000000 1.50000 96.7% - 0s 0 2 1.80000 0 21 46.00000 1.80000 96.1% - 0s * 22 16 12 45.0000000 7.57714 83.2% 26.2 0s * 55 33 10 42.0000000 14.00000 66.7% 26.3 0s * 151 55 11 41.0000000 19.55556 52.3% 21.3 0s * 176 56 12 40.0000000 19.76389 50.6% 19.9 0s * 384 62 11 39.0000000 28.00000 28.2% 16.8 0s Cutting planes: Gomory: 2 Mod-K: 5 Explored 698 nodes (10642 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%