Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:02:43 2012 Optimize a model with 443 rows, 420 columns and 1525 nonzeros Presolve removed 0 rows and 30 columns Presolve time: 0.00s Presolved: 443 rows, 390 columns, 1495 nonzeros Variable types: 0 continuous, 390 integer (389 binary) Found heuristic solution: objective 69.0000000 Root relaxation: objective 0.000000e+00, 243 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 0 154 69.00000 0.00000 100% - 0s H 0 0 60.0000000 0.00000 100% - 0s H 0 0 59.0000000 0.00000 100% - 0s H 0 0 56.0000000 0.00000 100% - 0s 0 0 0.31415 0 155 56.00000 0.31415 99.4% - 0s 0 0 1.00000 0 160 56.00000 1.00000 98.2% - 0s 0 0 1.00000 0 160 56.00000 1.00000 98.2% - 0s 0 0 1.00000 0 154 56.00000 1.00000 98.2% - 0s H 0 0 55.0000000 1.00000 98.2% - 0s 0 2 1.00000 0 154 55.00000 1.00000 98.2% - 0s H 27 27 51.0000000 1.00000 98.0% 44.9 0s H 54 41 18.0000000 1.00000 94.4% 30.6 0s * 170 113 20 17.0000000 3.59091 78.9% 29.6 0s Cutting planes: Gomory: 3 Explored 1224 nodes (32609 simplex iterations) in 1.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%