Gurobi 5.0.1 (linux64) logging started Wed Apr 24 12:09:38 2013 Optimize a model with 1650 rows, 225150 columns and 450150 nonzeros Presolve time: 0.52s Presolved: 1650 rows, 225150 columns, 450150 nonzeros Variable types: 225000 continuous, 150 integer (150 binary) Root relaxation: objective 2.567898e+05, 6806 iterations, 0.54 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 256789.839 0 8 - 256789.839 - - 1s H 0 0 286789.00000 256789.839 10.5% - 1s 0 0 257057.768 0 7 286789.000 257057.768 10.4% - 2s H 0 0 280709.86417 257057.768 8.43% - 2s H 0 0 279204.00000 257057.768 7.93% - 3s 0 0 257071.585 0 5 279204.000 257071.585 7.93% - 3s H 0 0 271662.11438 257071.585 5.37% - 3s H 0 0 270592.00000 257071.585 5.00% - 3s 0 0 257072.147 0 5 270592.000 257072.147 5.00% - 4s H 0 0 261055.00000 257072.147 1.53% - 4s 0 0 257077.354 0 6 261055.000 257077.354 1.52% - 5s 0 0 257077.354 0 8 261055.000 257077.354 1.52% - 6s 0 0 257077.354 0 7 261055.000 257077.354 1.52% - 7s 0 0 257077.354 0 5 261055.000 257077.354 1.52% - 7s 0 0 257077.354 0 5 261055.000 257077.354 1.52% - 7s 0 0 257077.354 0 6 261055.000 257077.354 1.52% - 8s 0 0 257077.762 0 7 261055.000 257077.762 1.52% - 8s 0 0 257080.263 0 6 261055.000 257080.263 1.52% - 8s 0 0 257080.271 0 5 261055.000 257080.271 1.52% - 9s 0 0 257080.313 0 6 261055.000 257080.313 1.52% - 9s 0 0 257080.997 0 7 261055.000 257080.997 1.52% - 9s 0 0 257081.434 0 5 261055.000 257081.434 1.52% - 10s 0 0 257081.521 0 4 261055.000 257081.521 1.52% - 10s 0 0 257081.521 0 4 261055.000 257081.521 1.52% - 10s 0 0 257081.580 0 4 261055.000 257081.580 1.52% - 11s 0 2 257084.231 0 4 261055.000 257084.231 1.52% - 12s H 11 9 257935.24000 257349.000 0.23% 141 14s H 12 9 257780.00000 257349.000 0.17% 131 14s H 13 10 257767.00000 257349.000 0.16% 124 14s * 16 11 14 257670.00000 257349.000 0.12% 105 14s 20 7 257626.597 2 4 257670.000 257543.599 0.05% 136 15s Cutting planes: Implied bound: 190 Flow cover: 11 Explored 36 nodes (16724 simplex iterations) in 16.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.576700000000e+05, best bound 2.576639411477e+05, gap 0.0024%