Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:04:32 2012 Optimize a model with 411 rows, 406 columns and 1431 nonzeros Presolve removed 0 rows and 16 columns Presolve time: 0.00s Presolved: 411 rows, 390 columns, 1415 nonzeros Variable types: 0 continuous, 390 integer (389 binary) Found heuristic solution: objective 74.0000000 Root relaxation: objective 0.000000e+00, 260 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 0 173 74.00000 0.00000 100% - 0s H 0 0 57.0000000 0.00000 100% - 0s H 0 0 53.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s 0 0 0.40650 0 174 47.00000 0.40650 99.1% - 0s H 0 0 38.0000000 0.40650 98.9% - 0s 0 0 1.00000 0 177 38.00000 1.00000 97.4% - 0s H 0 0 25.0000000 1.00000 96.0% - 0s H 0 0 22.0000000 1.00000 95.5% - 0s 0 0 1.00000 0 178 22.00000 1.00000 95.5% - 0s 0 0 1.00000 0 176 22.00000 1.00000 95.5% - 0s H 0 0 17.0000000 1.00000 94.1% - 0s 0 2 1.00000 0 176 17.00000 1.00000 94.1% - 0s H 54 54 15.0000000 1.00000 93.3% 18.2 0s * 81 57 51 13.0000000 1.00000 92.3% 15.2 0s * 103 48 13 10.0000000 1.00000 90.0% 16.2 0s Explored 1075 nodes (24507 simplex iterations) in 1.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%