Build (method = -2) #dp: 2540 Step-3' Graph: 94 vertices and 296 arcs (0.01s) Step-4' Graph: 21 vertices and 150 arcs (0.01s) #V4/#V3 = 0.22 #A4/#A3 = 0.51 Ready! (0.01s) Optimize a model with 89 rows, 151 columns and 416 nonzeros Presolve removed 25 rows and 26 columns Presolve time: 0.00s Presolved: 64 rows, 125 columns, 340 nonzeros Variable types: 0 continuous, 125 integer (0 binary) Found heuristic solution: objective 1.195000e+08 Found heuristic solution: objective 7.949998e+07 Optimize a model with 64 rows, 125 columns and 340 nonzeros Presolved: 64 rows, 125 columns, 340 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.250e+02 Factor NZ : 1.001e+03 Factor Ops : 2.086e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.08206824e+09 -8.48836656e+08 3.10e+08 1.11e-16 1.83e+07 0s 1 2.53872734e+08 -2.82418743e+08 3.45e+07 1.28e-15 2.83e+06 0s 2 8.92149421e+07 9.13963429e+06 3.39e+05 2.33e-15 2.74e+05 0s 3 6.49428123e+07 4.04737580e+07 5.40e+03 1.11e-15 8.27e+04 0s 4 6.01579035e+07 5.84145336e+07 6.19e+01 8.88e-16 5.89e+03 0s 5 6.00000176e+07 5.99995590e+07 1.42e-02 8.88e-16 1.55e+00 0s 6 6.00000000e+07 6.00000000e+07 1.19e-07 1.61e-12 2.51e-06 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.00000000e+07 Warning: Markowitz tolerance tightened to 0.5 Root relaxation: objective 6.000000e+07, 71 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 6.000000e+07 6.0000e+07 0.0% - 0s Explored 0 nodes (71 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.000000000000e+07, best bound 6.000000000000e+07, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 60000000 Solution: 2000000 x [24, 68] 1000000 x [26, 67] 3000000 x [22, 66] 2000000 x [20, 65] 4000000 x [15, 64] 1000000 x [28, 63] 2000000 x [32, 62] 2000000 x [16, 61] 3000000 x [29, 60] 1000000 x [27, 59] 1000000 x [18, 58] 2000000 x [12, 57] 2000000 x [9, 56] 1000000 x [37, 55] 3000000 x [19, 54] 1000000 x [10, 53] 2000000 x [5, 52] 1000000 x [5, 51] 2000000 x [42, 50] 1000000 x [3, 50] 1000000 x [43, 49] 1000000 x [43, 48] 1000000 x [44, 47] 1000000 x [2, 46] 2000000 x [44, 45] 1000000 x [4, 41] 1000000 x [8, 40] 1000000 x [11, 39] 1000000 x [13, 38] 2000000 x [7, 37] 1000000 x [17, 36] 1000000 x [21, 35] 2000000 x [14, 34] 1000000 x [31, 33] 2000000 x [18, 30] 1000000 x [1, 25] 3000000 x [6, 23]