Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:58:53 2012 Optimize a model with 291 rows, 170 columns and 895 nonzeros Presolve time: 0.00s Presolved: 291 rows, 170 columns, 895 nonzeros Variable types: 0 continuous, 170 integer (170 binary) Found heuristic solution: objective 75.0000000 Root relaxation: objective 0.000000e+00, 47 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 25 75.00000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 70.0000000 0.00000 100% - 0s 0 0 1.16434 0 34 70.00000 1.16434 98.3% - 0s 0 0 1.25482 0 35 70.00000 1.25482 98.2% - 0s 0 0 1.28832 0 46 70.00000 1.28832 98.2% - 0s 0 0 1.35500 0 28 70.00000 1.35500 98.1% - 0s 0 0 1.38000 0 27 70.00000 1.38000 98.0% - 0s 0 0 1.38000 0 27 70.00000 1.38000 98.0% - 0s 0 0 1.38000 0 27 70.00000 1.38000 98.0% - 0s 0 0 1.38000 0 27 70.00000 1.38000 98.0% - 0s 0 2 1.43269 0 27 70.00000 1.43269 98.0% - 0s H 32 29 69.0000000 5.04167 92.7% 30.2 0s * 88 66 18 68.0000000 12.75000 81.2% 29.5 0s * 90 61 16 66.0000000 12.75000 80.7% 28.9 0s * 119 83 17 65.0000000 13.00000 80.0% 29.6 0s * 120 80 18 64.0000000 13.00000 79.7% 29.4 0s * 159 95 15 62.0000000 17.36111 72.0% 29.2 0s * 273 108 12 59.0000000 17.73214 69.9% 25.6 0s * 367 137 16 57.0000000 22.04167 61.3% 25.7 0s * 1526 187 30 56.0000000 37.55556 32.9% 23.3 1s Cutting planes: Gomory: 1 Mod-K: 2 Explored 3470 nodes (68316 simplex iterations) in 2.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.600000000000e+01, best bound 5.600000000000e+01, gap 0.0%