Gurobi 5.0.1 (linux64) logging started Fri Nov 16 21:22:07 2012 Optimize a model with 25329 rows, 29070 columns and 104208 nonzeros Presolve removed 28 rows and 4422 columns Presolve time: 0.60s Presolved: 25301 rows, 24648 columns, 99490 nonzeros Variable types: 0 continuous, 24648 integer (24648 binary) Found heuristic solution: objective 170.0000000 Found heuristic solution: objective 3.0000000 Root relaxation: objective 2.000000e+00, 303 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 212 3.00000 2.00000 33.3% - 0s 0 0 infeasible 0 3.00000 2.00000 33.3% - 0s Explored 0 nodes (550 simplex iterations) in 0.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%