Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:13 2012 Optimize a model with 328 rows, 108 columns and 656 nonzeros Presolve removed 62 rows and 1 columns Presolve time: 0.00s Presolved: 266 rows, 107 columns, 566 nonzeros Variable types: 0 continuous, 107 integer (107 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 4.750000e+01, 125 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 47.50000 0 81 36.00000 47.50000 31.9% - 0s H 0 0 39.0000000 47.50000 21.8% - 0s 0 0 45.83333 0 101 39.00000 45.83333 17.5% - 0s H 0 0 40.0000000 45.83333 14.6% - 0s H 0 0 41.0000000 45.83333 11.8% - 0s 0 0 45.38095 0 101 41.00000 45.38095 10.7% - 0s 0 0 45.00000 0 92 41.00000 45.00000 9.76% - 0s H 0 0 42.0000000 45.00000 7.14% - 0s H 0 0 43.0000000 45.00000 4.65% - 0s 0 0 44.82759 0 102 43.00000 44.82759 4.25% - 0s 0 0 44.50000 0 101 43.00000 44.50000 3.49% - 0s 0 0 44.40000 0 104 43.00000 44.40000 3.26% - 0s 0 0 44.25926 0 103 43.00000 44.25926 2.93% - 0s 0 0 44.18750 0 101 43.00000 44.18750 2.76% - 0s 0 0 44.14286 0 100 43.00000 44.14286 2.66% - 0s 0 0 44.05882 0 97 43.00000 44.05882 2.46% - 0s 0 0 44.00000 0 97 43.00000 44.00000 2.33% - 0s 0 0 44.00000 0 97 43.00000 44.00000 2.33% - 0s 0 0 44.00000 0 85 43.00000 44.00000 2.33% - 0s 0 2 44.00000 0 85 43.00000 44.00000 2.33% - 0s Cutting planes: Zero half: 21 Explored 1 nodes (799 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%