Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:31:09 2012 Optimize a model with 72655 rows, 57360 columns and 274131 nonzeros Presolve removed 1212 rows and 4063 columns (presolve time = 5s) ... Presolve removed 1214 rows and 4065 columns Presolve time: 5.56s Presolved: 71441 rows, 53295 columns, 266602 nonzeros Variable types: 0 continuous, 53295 integer (53295 binary) Found heuristic solution: objective 239.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30611 3.0000923e+00 2.456098e+01 0.000000e+00 5s 35401 3.0000959e+00 1.626094e+02 0.000000e+00 10s 38767 3.0000989e+00 4.120146e+01 0.000000e+00 15s 42133 3.0001014e+00 1.026066e+02 0.000000e+00 20s 45346 3.0001040e+00 3.573915e+01 0.000000e+00 25s 48712 3.0001060e+00 2.330437e+02 0.000000e+00 30s 52078 3.0001091e+00 4.514578e+01 0.000000e+00 35s 55138 3.0001110e+00 1.684251e+02 0.000000e+00 40s 58504 3.0001135e+00 4.991723e+01 0.000000e+00 45s 61717 3.0001176e+00 9.017854e+00 0.000000e+00 50s 62647 3.0000000e+00 0.000000e+00 0.000000e+00 51s Root relaxation: objective 3.000000e+00, 62647 iterations, 51.39 seconds Total elapsed time = 122.55s Total elapsed time = 140.78s Total elapsed time = 145.11s 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% - 145s Explored 0 nodes (172180 simplex iterations) in 145.34 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%