Gurobi 5.0.1 (linux64) logging started Wed Apr 24 08:17:53 2013 Optimize a model with 93312 rows, 92352 columns and 368832 nonzeros Presolve removed 96 rows and 0 columns Presolve time: 0.46s Presolved: 93216 rows, 92352 columns, 368736 nonzeros Variable types: 92256 continuous, 96 integer (96 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9606 7.7833548e+04 3.693532e+04 0.000000e+00 6s 10990 7.8841383e+04 4.876407e+04 0.000000e+00 10s 12547 7.9369145e+04 2.598162e+02 0.000000e+00 15s 12920 7.9383264e+04 0.000000e+00 0.000000e+00 17s Root relaxation: objective 7.938326e+04, 12920 iterations, 16.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 79383.2644 0 72 - 79383.2644 - - 17s H 0 0 171173.00000 79383.2644 53.6% - 28s 0 0 108960.390 0 24 171173.000 108960.390 36.3% - 61s H 0 0 152322.00000 108960.390 28.5% - 73s 0 0 125479.435 0 10 152322.000 125479.435 17.6% - 87s H 0 0 145069.48903 125479.435 13.5% - 87s H 0 0 140432.00000 125479.435 10.6% - 87s 0 0 127061.538 0 1 140432.000 127061.538 9.52% - 89s H 0 0 128121.92308 127061.538 0.83% - 89s H 0 0 128071.00000 127061.538 0.79% - 89s 0 2 127070.987 0 1 128071.000 127070.987 0.78% - 91s 3 5 127296.583 2 4 128071.000 127296.583 0.60% 1014 95s H 8 5 127435.97260 127305.970 0.10% 537 97s * 10 5 9 127389.00000 127305.970 0.07% 482 97s Cutting planes: Implied bound: 96 Explored 16 nodes (40560 simplex iterations) in 97.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.273890000000e+05, best bound 1.273890000000e+05, gap 0.0%