Build (method = -2) #dp: 4286 Step-3' Graph: 83 vertices and 1503 arcs (0.01s) Step-4' Graph: 80 vertices and 1497 arcs (0.01s) #V4/#V3 = 0.96 #A4/#A3 = 1.00 Ready! (0.01s) Optimize a model with 161 rows, 1498 columns and 4340 nonzeros Presolve removed 54 rows and 121 columns Presolve time: 0.04s Presolved: 107 rows, 1377 columns, 3905 nonzeros Variable types: 0 continuous, 1377 integer (0 binary) Found heuristic solution: objective 432.0000000 Found heuristic solution: objective 390.0000000 Optimize a model with 107 rows, 1377 columns and 3905 nonzeros Presolved: 107 rows, 1377 columns, 3905 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.898e+03 Factor NZ : 3.446e+03 Factor Ops : 1.429e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.84350211e+03 -2.53110546e+04 5.64e+04 2.22e-16 7.90e+01 0s 1 1.63566839e+03 -9.61262102e+03 9.74e+03 2.11e-15 1.51e+01 0s 2 5.73891273e+02 -3.63657038e+03 6.51e+02 1.27e-14 2.10e+00 0s 3 4.87841321e+02 -1.08634100e+03 5.87e+01 3.89e-15 5.97e-01 0s 4 4.21021795e+02 -4.20695429e+02 2.42e+00 1.33e-15 3.03e-01 0s 5 3.43412472e+02 1.06588059e+01 1.07e+00 1.44e-15 1.20e-01 0s 6 2.99262475e+02 9.89119526e+01 3.47e-01 1.33e-15 7.19e-02 0s 7 2.80378844e+02 1.57146136e+02 1.29e-01 1.22e-15 4.42e-02 0s 8 2.66223397e+02 2.51392271e+02 1.50e-02 1.11e-15 5.32e-03 0s 9 2.63639712e+02 2.60250366e+02 2.85e-03 1.11e-15 1.22e-03 0s 10 2.63004405e+02 2.62984629e+02 3.05e-06 1.18e-15 7.09e-06 0s 11 2.63000000e+02 2.63000000e+02 2.65e-11 1.42e-15 2.50e-11 0s Barrier solved model in 11 iterations and 0.01 seconds Optimal objective 2.63000000e+02 Root relaxation: objective 2.630000e+02, 384 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 263.0000000 263.00000 0.0% - 0s Explored 0 nodes (384 simplex iterations) in 0.09 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.630000000000e+02, best bound 2.630000000000e+02, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.09 seconds Total run time: 0.11 seconds Objective: 263 Solution: 2 x [81] 3 x [1, 81] 3 x [80] 5 x [2, 80] 6 x [79] 5 x [3, 79] 3 x [78] 4 x [4, 78] 9 x [5, 77] 5 x [6, 76] 4 x [7, 75] 5 x [8, 74] 5 x [9, 73] 3 x [10, 72] 2 x [7, 72] 5 x [11, 71] 7 x [12, 70] 7 x [10, 69] 2 x [68] 1 x [11, 68] 2 x [9, 68] 10 x [13, 67] 3 x [15, 66] 7 x [14, 66] 5 x [17, 65] 6 x [16, 65] 1 x [8, 65] 3 x [18, 64] 2 x [15, 64] 4 x [19, 63] 5 x [62] 1 x [20, 61] 9 x [20, 60] 5 x [21, 59] 6 x [24, 58] 2 x [22, 58] 6 x [25, 57] 3 x [18, 57] 5 x [23, 56] 1 x [18, 56] 8 x [26, 55] 1 x [25, 55] 8 x [28, 54] 2 x [27, 54] 6 x [29, 53] 1 x [25, 53] 5 x [52] 3 x [30, 52] 2 x [31, 51] 5 x [31, 50] 3 x [33, 49] 5 x [34, 48] 5 x [35, 47] 6 x [34, 46] 1 x [33, 46] 5 x [36, 45] 2 x [31, 45] 6 x [38, 44] 1 x [37, 44] 3 x [39, 43] 5 x [40, 42] 3 x [40, 41] 1 x [37, 41] 2 x [32, 41] 1 x [37, 40] 1 x [39, 39]