
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:36:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5975.45.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/grafo5975.45.lp
Reading time = 0.10 seconds
: 59173 rows, 1931 columns, 178658 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 59173 rows, 1931 columns and 178658 nonzeros
Model fingerprint: 0xef396672
Variable types: 38 continuous, 1893 integer (1893 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 8802 rows and 33 columns
Presolve time: 0.40s
Presolved: 50371 rows, 1898 columns, 152603 nonzeros
Variable types: 0 continuous, 1898 integer (1860 binary)
Root relaxation presolved: 27745 rows, 24524 columns, 107351 nonzeros


Root relaxation: objective 3.300000e+01, 3549 iterations, 1.74 seconds (1.57 work units)
Total elapsed time = 6.46s (DegenMoves)

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

     0     0   33.00000    0  458          -   33.00000      -     -    8s
H    0     0                       5.0000000   33.00000   560%     -    8s
H    0     0                       7.0000000   33.00000   371%     -    8s
     0     0   33.00000    0  656    7.00000   33.00000   371%     -   15s
H    0     0                       9.0000000   33.00000   267%     -   16s
     0     0   33.00000    0  672    9.00000   33.00000   267%     -   16s
     0     0   32.00000    0  407    9.00000   32.00000   256%     -   33s
     0     0   32.00000    0  407    9.00000   32.00000   256%     -   34s
     0     0   32.00000    0  330    9.00000   32.00000   256%     -   50s

Cutting planes:
  Cover: 20
  Clique: 4
  MIR: 107
  GUB cover: 6
  Zero half: 32
  RLT: 47
  Relax-and-lift: 1

Explored 1 nodes (63001 simplex iterations) in 50.07 seconds (51.56 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.200000000000e+01, gap 255.5556%

Wrote result file './lp_solutions/grafo5975.45.sol'

