
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:58:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5454.38.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/grafo5454.38.lp
Reading time = 0.11 seconds
: 70138 rows, 1748 columns, 211688 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 70138 rows, 1748 columns and 211688 nonzeros
Model fingerprint: 0xb5cd0fa8
Variable types: 39 continuous, 1709 integer (1709 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]
Presolve removed 20031 rows and 9 columns
Presolve time: 0.43s
Presolved: 50107 rows, 1739 columns, 151878 nonzeros
Variable types: 0 continuous, 1739 integer (1700 binary)
Found heuristic solution: objective 3.0000000
Root relaxation presolved: 1736 rows, 51843 columns, 153617 nonzeros


Root relaxation: objective 4.200000e+01, 2743 iterations, 0.71 seconds (0.84 work units)
Total elapsed time = 7.45s (DegenMoves)

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

     0     0   42.00000    0  465    3.00000   42.00000  1300%     -    9s
H    0     0                       4.0000000   42.00000   950%     -    9s
H    0     0                       5.0000000   42.00000   740%     -   11s
H    0     0                       6.0000000   42.00000   600%     -   11s
H    0     0                       7.0000000   42.00000   500%     -   19s
     0     0   42.00000    0  864    7.00000   42.00000   500%     -   19s
H    0     0                       8.0000000   42.00000   425%     -   19s
     0     0   42.00000    0  787    8.00000   42.00000   425%     -   21s
     0     0   42.00000    0  563    8.00000   42.00000   425%     -   43s
     0     0   42.00000    0  493    8.00000   42.00000   425%     -   44s
     0     0   42.00000    0  672    8.00000   42.00000   425%     -   50s

Cutting planes:
  Cover: 42
  Clique: 12
  MIR: 147
  StrongCG: 1
  GUB cover: 2
  Zero half: 67
  RLT: 77

Explored 1 nodes (50378 simplex iterations) in 50.05 seconds (49.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 8 7 6 ... 3

Time limit reached
Best objective 8.000000000000e+00, best bound 4.200000000000e+01, gap 425.0000%

Wrote result file './lp_solutions/grafo5454.38.sol'

