
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:55:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4057.43.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/grafo4057.43.lp
Reading time = 0.14 seconds
: 86159 rows, 1885 columns, 259704 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 86159 rows, 1885 columns and 259704 nonzeros
Model fingerprint: 0x033d31e1
Variable types: 38 continuous, 1847 integer (1847 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 24600 rows and 16 columns
Presolve time: 0.57s
Presolved: 61559 rows, 1869 columns, 186118 nonzeros
Variable types: 0 continuous, 1869 integer (1831 binary)
Root relaxation presolved: 1869 rows, 63428 columns, 187987 nonzeros


Root relaxation: objective 3.700000e+01, 2844 iterations, 0.99 seconds (1.25 work units)
Total elapsed time = 9.72s (DegenMoves)

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

     0     0   37.00000    0  640          -   37.00000      -     -   19s
H    0     0                       5.0000000   37.00000   640%     -   19s
H    0     0                       8.0000000   37.00000   362%     -   19s
     0     0   37.00000    0  795    8.00000   37.00000   362%     -   31s
     0     0   37.00000    0  742    8.00000   37.00000   362%     -   32s
     0     0   37.00000    0  625    8.00000   37.00000   362%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 8
  Clique: 23
  MIR: 100
  StrongCG: 1
  GUB cover: 3
  Zero half: 45
  RLT: 54
  BQP: 2

Explored 1 nodes (44741 simplex iterations) in 50.08 seconds (52.75 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.700000000000e+01, gap 362.5000%

Wrote result file './lp_solutions/grafo4057.43.sol'

