Build (method = -2) #dp: 203 Step-3' Graph: 23 vertices and 75 arcs (0.00s) Step-4' Graph: 11 vertices and 51 arcs (0.00s) #V4/#V3 = 0.48 #A4/#A3 = 0.68 Ready! (0.00s) Optimize a model with 31 rows, 52 columns and 140 nonzeros Presolve removed 15 rows and 20 columns Presolve time: 0.00s Presolved: 16 rows, 32 columns, 85 nonzeros Variable types: 0 continuous, 32 integer (0 binary) Found heuristic solution: objective 1943.0000000 Found heuristic solution: objective 1648.0000000 Found heuristic solution: objective 1572.0000000 Optimize a model with 16 rows, 32 columns and 85 nonzeros Presolved: 16 rows, 32 columns, 85 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.200e+01 Factor NZ : 1.360e+02 Factor Ops : 1.496e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.11929323e+03 -4.28252893e+03 1.79e+03 2.22e-16 2.84e+02 0s 1 1.99739324e+03 -1.70486584e+02 5.95e+01 3.33e-16 3.28e+01 0s 2 1.58025327e+03 1.05380713e+03 3.90e-01 1.61e-15 7.22e+00 0s 3 1.35580791e+03 1.27223716e+03 2.99e-02 2.22e-16 1.14e+00 0s 4 1.33070325e+03 1.32893951e+03 5.09e-05 2.22e-16 2.42e-02 0s 5 1.33000001e+03 1.32999999e+03 1.03e-09 3.33e-16 3.27e-07 0s 6 1.33000000e+03 1.33000000e+03 1.47e-13 2.22e-16 3.30e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 1.33000000e+03 Root relaxation: objective 1.330000e+03, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 1330.0000000 1330.00000 0.0% - 0s Explored 0 nodes (13 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.330000000000e+03, best bound 1.330000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 1330 Solution: 132 x [19] 1 x [14] 171 x [1] 135 x [18] 32 x [17] 20 x [11, 17] 33 x [8, 17] 13 x [3] 96 x [3, 15] 20 x [3, 6] 21 x [3, 4] 176 x [20] 8 x [2, 7] 115 x [7, 13] 34 x [10, 16] 95 x [9, 12] 10 x [12, 16] 1 x [2, 12] 131 x [5, 16] 86 x [2, 9]