Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:05:38 2012 Optimize a model with 74468 rows, 58322 columns and 280522 nonzeros Presolve removed 1467 rows and 5061 columns (presolve time = 5s) ... Presolve removed 1469 rows and 5063 columns Presolve time: 6.07s Presolved: 72999 rows, 53259 columns, 271240 nonzeros Variable types: 0 continuous, 53259 integer (53259 binary) Found heuristic solution: objective 241.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28223 3.0000864e+00 9.140000e+01 0.000000e+00 5s 32254 3.0000888e+00 1.505843e+02 0.000000e+00 10s 35199 3.0000912e+00 1.471491e+02 0.000000e+00 15s 37989 3.0000930e+00 5.069654e+01 0.000000e+00 20s 40779 3.0000946e+00 6.341273e+01 0.000000e+00 25s 43724 3.0000964e+00 1.320973e+01 0.000000e+00 30s 46514 3.0000983e+00 1.159191e+01 0.000000e+00 35s 49614 3.0001012e+00 1.551893e+01 0.000000e+00 40s 52559 3.0001048e+00 7.181956e+00 0.000000e+00 45s 55194 3.0001078e+00 3.065785e+01 0.000000e+00 50s 57829 3.0001108e+00 2.534361e+00 0.000000e+00 55s 60309 3.0001126e+00 1.121304e+01 0.000000e+00 60s 60804 3.0000000e+00 0.000000e+00 0.000000e+00 61s Root relaxation: objective 3.000000e+00, 60804 iterations, 61.10 seconds Total elapsed time = 133.30s Total elapsed time = 135.75s 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% - 140s Explored 0 nodes (171494 simplex iterations) in 140.96 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%