Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:23:34 2012 Optimize a model with 281 rows, 211 columns and 911 nonzeros Presolve time: 0.00s Presolved: 281 rows, 211 columns, 911 nonzeros Variable types: 0 continuous, 211 integer (211 binary) Found heuristic solution: objective 64.0000000 Root relaxation: objective 0.000000e+00, 105 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 71 64.00000 0.00000 100% - 0s H 0 0 38.0000000 0.00000 100% - 0s 0 0 0.50467 0 74 38.00000 0.50467 98.7% - 0s 0 0 0.57854 0 75 38.00000 0.57854 98.5% - 0s 0 0 0.58591 0 75 38.00000 0.58591 98.5% - 0s 0 0 0.61456 0 76 38.00000 0.61456 98.4% - 0s 0 0 0.64654 0 77 38.00000 0.64654 98.3% - 0s 0 0 0.65060 0 76 38.00000 0.65060 98.3% - 0s 0 0 0.65480 0 75 38.00000 0.65480 98.3% - 0s 0 0 0.68419 0 77 38.00000 0.68419 98.2% - 0s 0 0 0.70181 0 80 38.00000 0.70181 98.2% - 0s 0 0 0.71312 0 81 38.00000 0.71312 98.1% - 0s 0 0 0.71312 0 81 38.00000 0.71312 98.1% - 0s 0 2 0.75247 0 81 38.00000 0.75247 98.0% - 0s H 27 27 28.0000000 2.53270 91.0% 31.3 0s * 29 25 18 27.0000000 2.53270 90.6% 30.9 0s * 31 22 17 24.0000000 2.53270 89.4% 29.4 0s * 797 164 21 23.0000000 13.53333 41.2% 22.0 0s Explored 1344 nodes (30974 simplex iterations) in 1.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.300000000000e+01, best bound 2.300000000000e+01, gap 0.0%