Gurobi 5.6.3 (linux64) logging started Wed Oct 8 03:44:05 2014 Optimize a model with 46656 rows, 46441 columns and 185115 nonzeros Presolve time: 1.31s Presolved: 46656 rows, 46441 columns, 185115 nonzeros Variable types: 1 continuous, 46440 integer (46440 binary) Found heuristic solution: objective 0.6813093 Found heuristic solution: objective 0.6806200 Found heuristic solution: objective 0.6762715 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 11729 8.4025205e-02 1.185100e+03 0.000000e+00 5s 12095 8.3869697e-02 0.000000e+00 0.000000e+00 6s Root relaxation: objective 8.386970e-02, 12095 iterations, 5.56 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.08387 0 2041 0.67627 0.08387 87.6% - 8s H 0 0 0.1459870 0.08387 42.5% - 14s 0 0 0.08644 0 1761 0.14599 0.08644 40.8% - 18s 0 0 0.08644 0 1775 0.14599 0.08644 40.8% - 19s 0 0 0.08840 0 1842 0.14599 0.08840 39.4% - 20s 0 0 0.08940 0 1829 0.14599 0.08940 38.8% - 20s 0 0 0.08955 0 1872 0.14599 0.08955 38.7% - 20s 0 0 0.08964 0 1830 0.14599 0.08964 38.6% - 21s 0 0 0.08964 0 1822 0.14599 0.08964 38.6% - 21s 0 0 0.08965 0 1837 0.14599 0.08965 38.6% - 21s 0 0 0.08965 0 1775 0.14599 0.08965 38.6% - 21s H 0 0 0.1410372 0.08965 36.4% - 22s 0 2 0.09141 0 1523 0.14104 0.09141 35.2% - 23s H 27 27 0.1403240 0.09145 34.8% 559 24s 50 44 0.10797 5 892 0.14032 0.09145 34.8% 450 25s * 71 63 17 0.1399416 0.09145 34.6% 418 25s H 81 65 0.1382633 0.09145 33.9% 381 25s * 84 60 22 0.1379726 0.09145 33.7% 373 25s H 108 76 0.1350439 0.09259 31.4% 367 26s * 119 72 8 0.1339373 0.09378 30.0% 368 26s * 127 70 8 0.1335917 0.09389 29.7% 366 27s * 129 68 6 0.1335290 0.09389 29.7% 362 27s * 160 47 10 0.1335200 0.11238 15.8% 347 27s * 161 46 10 0.1328989 0.11238 15.4% 345 27s H 203 0 0.1315427 0.13154 0.00% 289 28s Cutting planes: Gomory: 5 MIR: 30 Zero half: 2 Explored 203 nodes (91859 simplex iterations) in 28.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.315426864984e-01, best bound 1.315426864984e-01, gap 0.0%