Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:26:29 2013 Optimize a model with 125671 rows, 8281 columns and 380926 nonzeros Presolve removed 7833 rows and 4193 columns Presolve time: 1.29s Presolved: 117838 rows, 4088 columns, 356592 nonzeros Variable types: 35 continuous, 4053 integer (4053 binary) Found heuristic solution: objective 205460.00000 Root relaxation: objective 1.527663e+05, 30006 iterations, 4.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 152766.348 0 15 205460.000 152766.348 25.6% - 6s H 0 0 152797.00000 152766.348 0.02% - 6s H 0 0 152784.00000 152766.348 0.01% - 6s H 0 0 152781.00000 152766.348 0.01% - 6s Explored 0 nodes (30059 simplex iterations) in 6.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.527810000000e+05, best bound 1.527670000000e+05, gap 0.0092%