Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:01:59 2012 Optimize a model with 443 rows, 419 columns and 1524 nonzeros Presolve removed 0 rows and 19 columns Presolve time: 0.00s Presolved: 443 rows, 400 columns, 1505 nonzeros Variable types: 0 continuous, 400 integer (399 binary) Found heuristic solution: objective 73.0000000 Root relaxation: objective 0.000000e+00, 244 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 0 168 73.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 61.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s 0 0 0.35444 0 169 59.00000 0.35444 99.4% - 0s H 0 0 57.0000000 0.35444 99.4% - 0s 0 0 1.00000 0 173 57.00000 1.00000 98.2% - 0s H 0 0 52.0000000 1.00000 98.1% - 0s 0 0 1.00000 0 173 52.00000 1.00000 98.1% - 0s 0 0 1.00000 0 170 52.00000 1.00000 98.1% - 0s H 0 0 50.0000000 1.00000 98.0% - 0s H 0 0 47.0000000 1.00000 97.9% - 0s 0 2 1.00000 0 168 47.00000 1.00000 97.9% - 0s H 27 27 45.0000000 1.80583 96.0% 39.3 0s * 40 40 21 18.0000000 1.80583 90.0% 33.5 0s * 87 46 13 15.0000000 2.62963 82.5% 29.8 0s Cutting planes: Gomory: 3 Explored 769 nodes (23964 simplex iterations) in 0.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%