Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:37:15 2012 Optimize a model with 74843 rows, 59292 columns and 282607 nonzeros Presolve removed 510 rows and 5832 columns (presolve time = 5s) ... Presolve removed 512 rows and 5834 columns Presolve time: 6.56s Presolved: 74331 rows, 53458 columns, 274948 nonzeros Variable types: 0 continuous, 53458 integer (53458 binary) Found heuristic solution: objective 243.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33286 3.0000952e+00 2.726087e+01 0.000000e+00 5s 37030 3.0000988e+00 2.384621e+01 0.000000e+00 10s 39838 3.0001008e+00 2.082265e+01 0.000000e+00 15s 42802 3.0001032e+00 5.066534e+01 0.000000e+00 20s 45610 3.0001051e+00 2.551585e+02 0.000000e+00 25s 48418 3.0001067e+00 3.395395e+01 0.000000e+00 30s 51382 3.0001090e+00 1.846800e+01 0.000000e+00 35s 54346 3.0001117e+00 1.260679e+02 0.000000e+00 40s 56998 3.0001140e+00 6.376230e+01 0.000000e+00 45s 59494 3.0001174e+00 5.248204e+01 0.000000e+00 50s 61990 3.0001201e+00 9.764497e+01 0.000000e+00 55s 64330 3.0001221e+00 1.818761e+02 0.000000e+00 60s 66514 3.0001237e+00 7.456653e+00 0.000000e+00 65s 68382 3.0000000e+00 0.000000e+00 0.000000e+00 69s Root relaxation: objective 3.000000e+00, 68382 iterations, 69.17 seconds Total elapsed time = 165.35s Total elapsed time = 183.21s Total elapsed time = 185.92s Total elapsed time = 190.72s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 216 243.00000 3.00000 98.8% - 190s H 0 0 3.0000000 3.00000 0.0% - 191s Explored 0 nodes (216288 simplex iterations) in 191.28 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%