Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:56:49 2013 Optimize a model with 29316 rows, 3136 columns and 89376 nonzeros Presolve removed 2680 rows and 1594 columns Presolve time: 0.20s Presolved: 26636 rows, 1542 columns, 81127 nonzeros Variable types: 23 continuous, 1519 integer (1519 binary) Found heuristic solution: objective 63010.000000 Root relaxation: objective 4.811473e+04, 7250 iterations, 0.43 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 48114.7262 0 7 63010.0000 48114.7262 23.6% - 0s H 0 0 48131.000000 48114.7262 0.03% - 0s H 0 0 48123.000000 48114.7262 0.02% - 0s 0 0 48117.0322 0 22 48123.0000 48117.0322 0.01% - 0s 0 0 48117.0322 0 9 48123.0000 48117.0322 0.01% - 0s 0 0 48117.2616 0 24 48123.0000 48117.2616 0.01% - 0s 0 0 48117.3670 0 26 48123.0000 48117.3670 0.01% - 0s 0 2 48117.5589 0 26 48123.0000 48117.5589 0.01% - 0s Cutting planes: Gomory: 6 MIR: 13 Zero half: 1 Explored 11 nodes (7671 simplex iterations) in 1.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.812300000000e+04, best bound 4.811900000000e+04, gap 0.0083%