Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:20:55 2013 Optimize a model with 170430 rows, 169130 columns and 676130 nonzeros Presolve removed 9720 rows and 0 columns Presolve time: 1.59s Presolved: 160710 rows, 169130 columns, 656690 nonzeros Variable types: 169000 continuous, 130 integer (130 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20214 1.2579526e+05 1.808574e+04 0.000000e+00 5s 29496 1.7153497e+05 9.529626e+03 0.000000e+00 10s 36187 1.7726457e+05 2.754881e+01 0.000000e+00 15s 36259 1.7726457e+05 0.000000e+00 0.000000e+00 15s Root relaxation: objective 1.772646e+05, 36259 iterations, 15.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 177264.568 0 3 - 177264.568 - - 17s H 0 0 181693.00000 177264.568 2.44% - 18s H 0 0 177815.00000 177264.568 0.31% - 19s 0 0 177264.825 0 4 177815.000 177264.825 0.31% - 20s 0 0 177264.825 0 3 177815.000 177264.825 0.31% - 32s 0 0 177264.825 0 4 177815.000 177264.825 0.31% - 33s 0 2 177293.376 0 4 177815.000 177293.376 0.29% - 37s H 5 5 177580.00000 177457.530 0.07% 214 38s H 6 6 177558.54444 177457.530 0.06% 182 39s H 7 7 177556.66935 177457.530 0.06% 159 39s H 8 7 177549.95105 177457.530 0.05% 141 39s * 9 7 9 177547.00000 177457.530 0.05% 130 39s Cutting planes: Gomory: 1 Flow cover: 2 Explored 15 nodes (55982 simplex iterations) in 39.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.775470000000e+05, best bound 1.775294000000e+05, gap 0.0099%