Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:19:37 2012 Optimize a model with 523 rows, 474 columns and 1779 nonzeros Presolve removed 0 rows and 13 columns Presolve time: 0.00s Presolved: 523 rows, 461 columns, 1766 nonzeros Variable types: 0 continuous, 461 integer (460 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 266 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 0 197 103.00000 0.00000 100% - 0s H 0 0 82.0000000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 76.0000000 0.00000 100% - 0s 0 0 0.46193 0 198 76.00000 0.46193 99.4% - 0s H 0 0 67.0000000 0.46193 99.3% - 0s 0 0 1.00000 0 199 67.00000 1.00000 98.5% - 0s H 0 0 57.0000000 1.00000 98.2% - 0s 0 0 1.00000 0 200 57.00000 1.00000 98.2% - 0s 0 0 1.00000 0 197 57.00000 1.00000 98.2% - 0s H 0 0 50.0000000 1.00000 98.0% - 0s H 0 0 45.0000000 1.00000 97.8% - 0s H 0 0 41.0000000 1.00000 97.6% - 0s 0 2 1.00000 0 197 41.00000 1.00000 97.6% - 0s * 43 37 24 20.0000000 3.65059 81.7% 36.7 0s Cutting planes: Gomory: 5 Explored 1618 nodes (45102 simplex iterations) in 2.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%