Gurobi 5.0.1 (linux64) logging started Sat Nov 17 11:43:11 2012 Optimize a model with 79679 rows, 62250 columns and 300043 nonzeros Presolve removed 1514 rows and 4980 columns (presolve time = 5s) ... Presolve removed 1516 rows and 4982 columns Presolve time: 7.03s Presolved: 78163 rows, 57268 columns, 290700 nonzeros Variable types: 0 continuous, 57268 integer (57268 binary) Found heuristic solution: objective 249.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37566 3.0000892e+00 4.963333e+01 0.000000e+00 5s 42265 3.0000970e+00 1.454628e+02 0.000000e+00 10s 46745 3.0000982e+00 1.411881e+01 0.000000e+00 15s 50585 3.0000992e+00 3.880593e+01 0.000000e+00 20s 54105 3.0001000e+00 1.300774e+02 0.000000e+00 25s 57305 3.0001008e+00 2.154982e+01 0.000000e+00 30s 60345 3.0001015e+00 1.870657e+01 0.000000e+00 35s 63065 3.0001022e+00 1.395352e+01 0.000000e+00 40s 65945 3.0001028e+00 5.676631e+00 0.000000e+00 45s 68985 3.0001038e+00 1.763262e+01 0.000000e+00 50s 70835 3.0000000e+00 0.000000e+00 0.000000e+00 53s Root relaxation: objective 3.000000e+00, 70835 iterations, 52.69 seconds Total elapsed time = 133.96s Total elapsed time = 135.57s 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% - 137s Explored 0 nodes (167677 simplex iterations) in 137.97 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%