Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:49:29 2013 Optimize a model with 818975 rows, 28900 columns and 2470950 nonzeros Presolve removed 21967 rows and 14507 columns (presolve time = 5s) ... Presolve removed 25778 rows and 14523 columns (presolve time = 10s) ... Presolve removed 25778 rows and 14523 columns Presolve time: 12.67s Presolved: 793197 rows, 14377 columns, 2392943 nonzeros Variable types: 80 continuous, 14297 integer (14297 binary) Found heuristic solution: objective 669171.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 8100 2.6836047e+05 0.000000e+00 2.740879e+08 5s 18900 3.4762036e+05 0.000000e+00 4.193489e+09 10s 28350 4.1536084e+05 0.000000e+00 1.002949e+09 15s 40500 4.1926892e+05 0.000000e+00 1.560410e+08 20s 52650 4.2403078e+05 0.000000e+00 4.590771e+08 25s 67500 4.2910694e+05 0.000000e+00 2.042936e+08 30s 79651 4.3346429e+05 0.000000e+00 5.861955e+08 35s 91801 4.3759603e+05 0.000000e+00 7.230244e+08 40s 106651 4.4440312e+05 0.000000e+00 3.393165e+08 45s 121501 4.5314788e+05 0.000000e+00 1.097110e+08 50s 135002 4.6723987e+05 0.000000e+00 1.950584e+07 55s 148528 4.8198106e+05 0.000000e+00 3.153201e+06 60s 152812 4.8529983e+05 0.000000e+00 0.000000e+00 64s 152812 4.8529983e+05 0.000000e+00 0.000000e+00 65s Root relaxation: objective 4.852998e+05, 152812 iterations, 64.63 seconds Total elapsed time = 80.27s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 485299.833 0 16 669171.000 485299.833 27.5% - 82s H 0 0 485309.00000 485299.833 0.00% - 82s Explored 0 nodes (153064 simplex iterations) in 82.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.853090000000e+05, best bound 4.853000000000e+05, gap 0.0019%