Gurobi 5.0.1 (linux64) logging started Sat Nov 17 03:29:24 2012 Optimize a model with 54167 rows, 49506 columns and 210898 nonzeros Presolve removed 446 rows and 2 columns Presolve time: 1.30s Presolved: 53943 rows, 49504 columns, 258588 nonzeros Variable types: 0 continuous, 49504 integer (49504 binary) Found heuristic solution: objective 222.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 31317 3.0000825e+00 1.630263e+01 0.000000e+00 5s 36206 3.0000862e+00 2.750000e+01 0.000000e+00 10s 40121 3.0000894e+00 2.585567e+00 0.000000e+00 15s 44133 3.0000000e+00 0.000000e+00 0.000000e+00 20s Root relaxation: objective 3.000000e+00, 44133 iterations, 19.93 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 50s Explored 0 nodes (85261 simplex iterations) in 50.51 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%