
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:36:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7570.40.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo7570.40.lp
Reading time = 0.11 seconds
: 67284 rows, 2016 columns, 203422 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 67284 rows, 2016 columns and 203422 nonzeros
Model fingerprint: 0x332192de
Variable types: 44 continuous, 1972 integer (1972 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Found heuristic solution: objective -0.0000000
Presolve removed 12539 rows and 42 columns
Presolve time: 0.44s
Presolved: 54745 rows, 1974 columns, 166348 nonzeros
Variable types: 0 continuous, 1974 integer (1930 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 1971 rows, 56716 columns, 168322 nonzeros


Root relaxation: objective 3.800000e+01, 1726 iterations, 0.34 seconds (0.32 work units)
Total elapsed time = 5.12s (DegenMoves)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   38.00000    0  510    3.00000   38.00000  1167%     -    5s
H    0     0                       6.0000000   38.00000   533%     -    5s
H    0     0                       7.0000000   38.00000   443%     -   25s
     0     0   38.00000    0 1110    7.00000   38.00000   443%     -   25s
     0     0   38.00000    0  985    7.00000   38.00000   443%     -   26s
     0     0   38.00000    0 1099    7.00000   38.00000   443%     -   50s

Cutting planes:
  Gomory: 4
  Cover: 10
  MIR: 118
  StrongCG: 2
  GUB cover: 2
  Zero half: 68
  RLT: 24

Explored 1 nodes (38473 simplex iterations) in 50.07 seconds (43.53 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 7 6 3 -0 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.800000000000e+01, gap 442.8571%

Wrote result file './lp_solutions/grafo7570.40.sol'

