Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:51:35 2012 Optimize a model with 319 rows, 242 columns and 1037 nonzeros Presolve time: 0.00s Presolved: 319 rows, 242 columns, 1037 nonzeros Variable types: 0 continuous, 242 integer (242 binary) Found heuristic solution: objective 85.0000000 Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 134 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 82 80.00000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.54054 0 83 55.00000 0.54054 99.0% - 0s H 0 0 52.0000000 0.54054 99.0% - 0s 0 0 1.01110 0 84 52.00000 1.01110 98.1% - 0s 0 0 1.04243 0 87 52.00000 1.04243 98.0% - 0s 0 0 1.05933 0 86 52.00000 1.05933 98.0% - 0s H 0 0 47.0000000 1.05933 97.7% - 0s H 0 0 44.0000000 1.05933 97.6% - 0s 0 2 1.12335 0 86 44.00000 1.12335 97.4% - 0s H 24 24 41.0000000 3.04163 92.6% 38.7 0s H 27 27 39.0000000 3.04163 92.2% 36.0 0s * 36 36 23 34.0000000 3.04163 91.1% 29.6 0s * 65 49 14 30.0000000 3.06029 89.8% 27.3 0s * 72 45 15 29.0000000 3.06029 89.4% 25.3 0s * 128 78 19 28.0000000 5.54401 80.2% 27.1 0s * 180 101 18 27.0000000 7.95686 70.5% 27.5 0s * 285 120 16 26.0000000 9.77629 62.4% 24.3 0s * 1105 100 22 25.0000000 16.86207 32.6% 24.1 1s Explored 1680 nodes (39265 simplex iterations) in 1.43 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%