
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:04:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6931.38.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/grafo6931.38.lp
Reading time = 0.14 seconds
: 88171 rows, 1900 columns, 265997 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 88171 rows, 1900 columns and 265997 nonzeros
Model fingerprint: 0xde162efe
Variable types: 40 continuous, 1860 integer (1860 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 28523 rows and 13 columns
Presolve time: 0.63s
Presolved: 59648 rows, 1887 columns, 180970 nonzeros
Variable types: 0 continuous, 1887 integer (1847 binary)
Root relaxation presolved: 1887 rows, 61535 columns, 182857 nonzeros


Root relaxation: objective 4.100000e+01, 1997 iterations, 0.40 seconds (0.39 work units)
Total elapsed time = 5.11s (DegenMoves)

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

     0     0   41.00000    0  476          -   41.00000      -     -    6s
H    0     0                       7.0000000   41.00000   486%     -    6s
H    0     0                       9.0000000   41.00000   356%     -    6s
     0     0   41.00000    0  592    9.00000   41.00000   356%     -   12s
H    0     0                      11.0000000   41.00000   273%     -   12s
     0     0   41.00000    0  563   11.00000   41.00000   273%     -   12s
H    0     0                      13.0000000   41.00000   215%     -   27s
H    0     0                      15.0000000   41.00000   173%     -   27s
H    0     0                      16.0000000   41.00000   156%     -   27s
     0     0   41.00000    0  434   16.00000   41.00000   156%     -   27s
     0     0   41.00000    0  440   16.00000   41.00000   156%     -   27s
H    0     0                      18.0000000   41.00000   128%     -   28s
     0     0   40.85714    0  435   18.00000   40.85714   127%     -   40s
     0     0   40.85714    0  413   18.00000   40.85714   127%     -   41s
     0     0   40.85714    0  524   18.00000   40.85714   127%     -   50s

Cutting planes:
  Lift-and-project: 2
  Cover: 20
  Clique: 18
  MIR: 101
  StrongCG: 3
  GUB cover: 4
  Zero half: 141
  RLT: 58

Explored 1 nodes (46562 simplex iterations) in 50.08 seconds (47.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 18 16 15 ... 7

Time limit reached
Best objective 1.800000000000e+01, best bound 4.000000000000e+01, gap 122.2222%

Wrote result file './lp_solutions/grafo6931.38.sol'

