Gurobi 5.0.1 (linux64) logging started Wed Nov 28 10:26:36 2012 Optimize a model with 104013 rows, 103917 columns and 411156 nonzeros Presolve removed 2210 rows and 2210 columns Presolve time: 0.76s Presolved: 101803 rows, 101707 columns, 406736 nonzeros Variable types: 99451 continuous, 2256 integer (2256 binary) Found heuristic solution: objective 74093.000000 Found heuristic solution: objective 54989.000000 Found heuristic solution: objective 53450.000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33359 1.3909750e+04 2.700000e+02 0.000000e+00 5s 48101 1.4075000e+04 2.540000e+02 0.000000e+00 10s 61354 1.4279500e+04 1.987500e+02 0.000000e+00 15s 70905 1.4282000e+04 1.005000e+02 0.000000e+00 21s 78758 1.4282000e+04 5.100000e+01 0.000000e+00 26s 84434 1.4284250e+04 4.450000e+01 0.000000e+00 30s 91444 1.4289333e+04 0.000000e+00 0.000000e+00 35s Root relaxation: objective 1.428933e+04, 91444 iterations, 34.99 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14289.3333 0 63 53450.0000 14289.3333 73.3% - 36s H 0 0 15826.000000 14289.3333 9.71% - 37s 0 0 14312.3333 0 50 15826.0000 14312.3333 9.56% - 46s H 0 0 14676.000000 14312.3333 2.48% - 47s 0 0 14327.3829 0 112 14676.0000 14327.3829 2.38% - 49s 0 0 14327.3829 0 63 14676.0000 14327.3829 2.38% - 53s 0 0 14327.7500 0 97 14676.0000 14327.7500 2.37% - 54s H 0 0 14669.000000 14327.7500 2.33% - 54s 0 0 14334.2667 0 124 14669.0000 14334.2667 2.28% - 54s H 0 0 14422.000000 14334.2667 0.61% - 55s 0 0 14341.2388 0 124 14422.0000 14341.2388 0.56% - 55s 0 2 14355.2672 0 124 14422.0000 14355.2672 0.46% - 61s 13 10 14394.2924 0 116 14422.0000 14394.2924 0.19% 0.0 65s 19 14 14397.7354 14 105 14422.0000 14397.7354 0.17% 576 70s Cutting planes: Gomory: 6 Implied bound: 7 Clique: 1 Zero half: 10 Explored 23 nodes (153368 simplex iterations) in 71.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.442200000000e+04, best bound 1.442200000000e+04, gap 0.0%