Build (method = -2) #dp: 441 Step-3' Graph: 109 vertices and 320 arcs (0.00s) Step-4' Graph: 28 vertices and 158 arcs (0.00s) #V4/#V3 = 0.26 #A4/#A3 = 0.49 Ready! (0.00s) Optimize a model with 65 rows, 159 columns and 425 nonzeros Presolve removed 29 rows and 33 columns Presolve time: 0.00s Presolved: 36 rows, 126 columns, 333 nonzeros Variable types: 0 continuous, 126 integer (12 binary) Found heuristic solution: objective 368.0000000 Found heuristic solution: objective 287.0000000 Optimize a model with 36 rows, 126 columns and 333 nonzeros Presolved: 36 rows, 126 columns, 333 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.710e+02 Factor NZ : 4.620e+02 Factor Ops : 7.122e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.47192176e+03 -2.34068665e+03 5.19e+03 1.60e-01 5.85e+01 0s 1 5.53172106e+02 -7.70007635e+02 5.34e+02 5.00e-16 8.68e+00 0s 2 3.56114214e+02 -1.13852106e+01 6.56e+01 8.88e-16 1.62e+00 0s 3 2.79362303e+02 2.06502068e+02 2.12e+00 2.19e-15 2.81e-01 0s 4 2.55945847e+02 2.45839351e+02 2.58e-01 1.20e-15 3.88e-02 0s 5 2.53015487e+02 2.52954835e+02 2.23e-03 1.23e-15 2.34e-04 0s 6 2.53000000e+02 2.53000000e+02 4.28e-09 1.24e-15 4.03e-10 0s 7 2.53000000e+02 2.53000000e+02 3.41e-13 9.11e-16 5.24e-16 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 2.53000000e+02 Root relaxation: objective 2.530000e+02, 73 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 253.0000000 253.00000 0.0% - 0s Explored 0 nodes (73 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.530000000000e+02, best bound 2.530000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 253 Solution: 12 x [1, 37] 22 x [2] 27 x [3] 7 x [4, 35] 1 x [5] 5 x [5, 34] 18 x [6, 34] 15 x [7] 2 x [8, 33] 1 x [8, 36] 4 x [8, 37] 4 x [9] 2 x [10] 12 x [10, 33] 2 x [11] 17 x [11, 31] 2 x [12] 7 x [13, 27] 1 x [13, 30] 2 x [14, 27] 10 x [15] 7 x [16, 32] 1 x [17] 1 x [17, 35, 36] 4 x [17, 36] 12 x [18] 2 x [19] 1 x [19, 27] 11 x [19, 29] 1 x [19, 36] 8 x [20, 27] 1 x [21, 28] 1 x [21, 33] 3 x [22] 3 x [22, 32] 4 x [23] 10 x [23, 26] 3 x [24, 33] 7 x [25, 28]