Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:52:21 2012 Optimize a model with 251 rows, 173 columns and 798 nonzeros Presolve time: 0.00s Presolved: 251 rows, 173 columns, 798 nonzeros Variable types: 0 continuous, 173 integer (173 binary) Found heuristic solution: objective 56.0000000 Root relaxation: objective 0.000000e+00, 89 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 48 56.00000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.59091 0 50 48.00000 0.59091 98.8% - 0s H 0 0 44.0000000 0.59091 98.7% - 0s 0 0 0.63636 0 50 44.00000 0.63636 98.6% - 0s 0 0 0.70000 0 51 44.00000 0.70000 98.4% - 0s 0 0 0.70833 0 51 44.00000 0.70833 98.4% - 0s 0 0 0.83451 0 56 44.00000 0.83451 98.1% - 0s 0 0 0.85714 0 56 44.00000 0.85714 98.1% - 0s 0 0 0.90816 0 52 44.00000 0.90816 97.9% - 0s 0 0 0.92064 0 71 44.00000 0.92064 97.9% - 0s 0 2 0.93300 0 71 44.00000 0.93300 97.9% - 0s * 33 30 20 37.0000000 4.80000 87.0% 24.2 0s * 82 46 13 30.0000000 9.00000 70.0% 22.1 0s * 1198 143 25 29.0000000 18.28571 36.9% 21.0 0s Explored 2089 nodes (44414 simplex iterations) in 1.18 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%