Gurobi 5.6.3 (linux64) logging started Tue Oct 7 23:56:53 2014 Optimize a model with 23409 rows, 23257 columns and 92568 nonzeros Presolve time: 0.56s Presolved: 23409 rows, 23257 columns, 92568 nonzeros Variable types: 1 continuous, 23256 integer (23256 binary) Found heuristic solution: objective 1.0969312 Found heuristic solution: objective 1.0945507 Found heuristic solution: objective 1.0330774 Root relaxation: objective 9.921878e-02, 6693 iterations, 1.40 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.09922 0 1349 1.03308 0.09922 90.4% - 2s H 0 0 0.8847228 0.09922 88.8% - 2s H 0 0 0.3962216 0.09922 75.0% - 2s H 0 0 0.3703692 0.09922 73.2% - 2s 0 0 0.09951 0 1316 0.37037 0.09951 73.1% - 4s 0 0 0.09951 0 1373 0.37037 0.09951 73.1% - 6s H 0 0 0.3588611 0.09951 72.3% - 6s H 0 0 0.2206331 0.09951 54.9% - 6s 0 0 0.09951 0 1324 0.22063 0.09951 54.9% - 7s 0 2 0.09952 0 1324 0.22063 0.09952 54.9% - 42s H 1 2 0.1727196 0.09952 42.4% 1066 44s 4 4 0.10430 0 984 0.17272 0.10430 39.6% 266 45s H 10 7 0.1712563 0.11059 35.4% 107 46s * 75 59 45 0.1712034 0.11615 32.2% 348 48s * 105 75 27 0.1676053 0.11615 30.7% 308 49s H 119 73 0.1675979 0.11615 30.7% 276 49s H 200 100 0.1667563 0.11693 29.9% 209 49s 212 107 0.16519 33 128 0.16676 0.11693 29.9% 201 50s * 218 105 37 0.1663303 0.11693 29.7% 197 50s * 319 128 26 0.1649935 0.12169 26.2% 184 51s Cutting planes: Gomory: 6 MIR: 102 Zero half: 3 Explored 448 nodes (88979 simplex iterations) in 51.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.649934782556e-01, best bound 1.649934782556e-01, gap 0.0%