Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:56:33 2014 Optimize a model with 7225 rows, 7141 columns and 28308 nonzeros Presolve time: 0.14s Presolved: 7225 rows, 7141 columns, 28308 nonzeros Variable types: 1 continuous, 7140 integer (7140 binary) Found heuristic solution: objective 0.9320139 Found heuristic solution: objective 0.9223933 Found heuristic solution: objective 0.6956930 Root relaxation: objective 1.338354e-01, 3103 iterations, 0.24 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.13384 0 739 0.69569 0.13384 80.8% - 0s H 0 0 0.3193795 0.13384 58.1% - 0s 0 0 0.13701 0 754 0.31938 0.13701 57.1% - 0s 0 0 0.13701 0 727 0.31938 0.13701 57.1% - 1s H 0 0 0.3088224 0.13701 55.6% - 1s 0 0 0.13708 0 752 0.30882 0.13708 55.6% - 1s 0 0 0.13811 0 775 0.30882 0.13811 55.3% - 1s H 0 0 0.2876087 0.13811 52.0% - 1s 0 0 0.13862 0 754 0.28761 0.13862 51.8% - 1s H 0 0 0.2853559 0.13862 51.4% - 1s 0 0 0.13871 0 764 0.28536 0.13871 51.4% - 1s H 0 0 0.2627183 0.13871 47.2% - 1s 0 0 0.13907 0 685 0.26272 0.13907 47.1% - 1s 0 2 0.13976 0 685 0.26272 0.13976 46.8% - 5s H 1 2 0.2336375 0.13976 40.2% 544 6s H 41 28 0.2248449 0.16509 26.6% 299 7s * 49 25 13 0.2178371 0.16544 24.1% 261 7s * 54 19 13 0.2146686 0.16802 21.7% 253 7s Cutting planes: Gomory: 6 MIR: 22 Zero half: 4 Explored 74 nodes (26174 simplex iterations) in 7.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.146686000528e-01, best bound 2.146686000528e-01, gap 0.0%