Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:08:29 2012 Optimize a model with 53593 rows, 44732 columns and 204457 nonzeros Presolve removed 424 rows and 2 columns Presolve time: 1.29s Presolved: 53380 rows, 44730 columns, 247419 nonzeros Variable types: 0 continuous, 44730 integer (44730 binary) Found heuristic solution: objective 211.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 26319 3.0000787e+00 2.057895e+01 0.000000e+00 5s 30639 3.0000815e+00 8.698548e+01 0.000000e+00 10s 34419 3.0000849e+00 5.831944e+01 0.000000e+00 15s 38604 3.0000911e+00 1.058612e+01 0.000000e+00 20s 42064 3.0000000e+00 0.000000e+00 0.000000e+00 24s Root relaxation: objective 3.000000e+00, 42064 iterations, 24.17 seconds Total elapsed time = 57.48s Total elapsed time = 61.28s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 44 211.00000 3.00000 98.6% - 63s H 0 0 3.0000000 3.00000 0.0% - 64s Explored 0 nodes (116526 simplex iterations) in 64.06 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%