Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:39:51 2012 Optimize a model with 80933 rows, 60762 columns and 302332 nonzeros Presolve removed 998 rows and 3444 columns (presolve time = 5s) ... Presolve removed 1000 rows and 3446 columns Presolve time: 6.89s Presolved: 79933 rows, 57316 columns, 295778 nonzeros Variable types: 0 continuous, 57316 integer (57316 binary) Found heuristic solution: objective 246.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37819 3.0000872e+00 4.200000e+01 0.000000e+00 5s 42197 3.0001028e+00 7.281674e+01 0.000000e+00 10s 44773 3.0001045e+00 1.120077e+02 0.000000e+00 15s 47510 3.0001061e+00 3.292668e+01 0.000000e+00 20s 50086 3.0001074e+00 4.087332e+01 0.000000e+00 25s 52662 3.0001089e+00 8.592966e+01 0.000000e+00 30s 55399 3.0001110e+00 1.802198e+02 0.000000e+00 35s 57975 3.0001124e+00 1.640420e+01 0.000000e+00 40s 60551 3.0001142e+00 3.496235e+01 0.000000e+00 45s 63127 3.0001157e+00 3.948287e+01 0.000000e+00 50s 65703 3.0001177e+00 4.919241e+01 0.000000e+00 55s 68279 3.0001191e+00 4.035898e+01 0.000000e+00 60s 70694 3.0001196e+00 4.485741e+01 0.000000e+00 65s 72480 3.0000000e+00 0.000000e+00 0.000000e+00 69s Root relaxation: objective 3.000000e+00, 72480 iterations, 68.77 seconds Total elapsed time = 132.02s Total elapsed time = 137.54s Total elapsed time = 140.52s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 64 246.00000 3.00000 98.8% - 140s H 0 0 3.0000000 3.00000 0.0% - 141s Explored 0 nodes (188233 simplex iterations) in 141.17 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%