Build (method = -2) #dp: 12957 Step-3' Graph: 846 vertices and 4342 arcs (0.13s) Step-4' Graph: 242 vertices and 3134 arcs (0.14s) #V4/#V3 = 0.29 #A4/#A3 = 0.72 Ready! (0.14s) Optimize a model with 362 rows, 3135 columns and 8925 nonzeros Presolve removed 82 rows and 83 columns Presolve time: 0.04s Presolved: 280 rows, 3052 columns, 8776 nonzeros Variable types: 0 continuous, 3052 integer (2712 binary) Found heuristic solution: objective 105.0000000 Optimize a model with 280 rows, 3052 columns and 8776 nonzeros Presolved: 280 rows, 3052 columns, 8776 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.895e+03 Factor NZ : 1.328e+04 (roughly 1 MByte of memory) Factor Ops : 9.848e+05 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.40089947e+03 -7.53226702e+03 8.76e+03 1.75e-01 6.82e+00 0s 1 7.49134616e+02 -1.54744084e+03 1.52e+03 5.55e-16 1.25e+00 0s 2 2.01186981e+02 -3.28026610e+02 2.05e+02 4.44e-16 1.98e-01 0s 3 7.62441210e+01 -3.96934112e+01 1.49e+01 7.22e-16 2.63e-02 0s 4 6.19368263e+01 2.24175245e+01 2.12e+00 4.44e-16 7.04e-03 0s 5 5.82994191e+01 3.36606960e+01 1.18e+00 4.44e-16 4.25e-03 0s 6 5.60927778e+01 3.82730159e+01 7.30e-01 4.44e-16 3.03e-03 0s 7 5.43200416e+01 4.20911618e+01 4.71e-01 3.24e-05 2.06e-03 0s 8 5.15487623e+01 4.50156396e+01 1.45e-01 4.44e-16 1.08e-03 0s 9 5.01596447e+01 4.73981369e+01 3.74e-02 8.88e-16 4.55e-04 0s 10 4.93859927e+01 4.81290371e+01 4.36e-03 6.66e-16 2.06e-04 0s 11 4.91962389e+01 4.85827271e+01 1.68e-03 4.44e-16 1.01e-04 0s 12 4.90938871e+01 4.87642243e+01 7.03e-04 4.44e-16 5.41e-05 0s 13 4.90341606e+01 4.89018063e+01 2.31e-04 7.42e-07 2.17e-05 0s 14 4.90000261e+01 4.89766028e+01 2.64e-05 4.44e-16 3.84e-06 0s 15 4.89965379e+01 4.89838449e+01 1.37e-05 6.66e-16 2.08e-06 0s 16 4.89930451e+01 4.89902585e+01 2.12e-06 4.44e-16 4.57e-07 0s 17 4.89925744e+01 4.89923195e+01 5.39e-07 6.66e-16 4.18e-08 0s 18 4.89924335e+01 4.89924224e+01 5.64e-09 4.44e-16 1.82e-09 0s 19 4.89924242e+01 4.89924242e+01 1.68e-10 6.66e-16 1.90e-12 0s Barrier solved model in 19 iterations and 0.05 seconds Optimal objective 4.89924242e+01 Root relaxation: objective 4.899242e+01, 219 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 48.99242 0 101 105.00000 48.99242 53.3% - 0s H 0 0 50.0000000 48.99242 2.02% - 0s * 0 0 0 49.0000000 49.00000 0.0% - 0s Cutting planes: Gomory: 1 Zero half: 15 Explored 0 nodes (539 simplex iterations) in 0.21 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.900000000000e+01, best bound 4.900000000000e+01, gap 0.0% Preprocessing time: 0.15 seconds Gurobi run time: 0.21 seconds Total run time: 0.36 seconds Objective: 49 Solution: 1 x [35, 99] 1 x [29, 102] 1 x [53, 80, 94] 1 x [63, 120] 1 x [25, 54, 89] 1 x [45, 113, 116] 1 x [15, 19, 90] 1 x [36, 91] 1 x [40, 65] 1 x [61, 107] 1 x [22, 95] 1 x [66, 67, 79] 1 x [9, 44, 92] 1 x [14, 84] 1 x [1, 85] 1 x [11, 17] 1 x [49, 109] 1 x [21, 105] 1 x [16, 43] 1 x [38, 73] 1 x [58, 98, 108] 1 x [41, 57, 86] 1 x [4, 5, 26] 1 x [28, 117] 1 x [18, 75] 1 x [2, 87] 1 x [46, 50] 1 x [6, 32, 101] 1 x [8, 12, 51] 1 x [72, 103] 1 x [3, 13] 1 x [31, 55, 78] 1 x [37, 64, 74] 1 x [39, 42, 100] 1 x [10, 81] 1 x [48, 59, 70] 1 x [68, 76, 93] 1 x [24, 56] 1 x [69, 111, 118] 1 x [23, 96, 112] 1 x [7, 20] 1 x [27, 82, 104] 1 x [62, 88, 110] 1 x [52, 71, 83] 1 x [97, 114, 119] 1 x [33, 34] 1 x [47, 115] 1 x [77, 106] 1 x [30, 60]