
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:03:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3959.42.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/grafo3959.42.lp
Reading time = 0.10 seconds
: 60023 rows, 2042 columns, 181638 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 60023 rows, 2042 columns and 181638 nonzeros
Model fingerprint: 0xa9b54a9c
Variable types: 43 continuous, 1999 integer (1999 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 7291 rows and 23 columns
Presolve time: 0.40s
Presolved: 52732 rows, 2019 columns, 160145 nonzeros
Variable types: 0 continuous, 2019 integer (1976 binary)
Root relaxation presolved: 28911 rows, 25840 columns, 112503 nonzeros


Root relaxation: objective 3.400000e+01, 3336 iterations, 1.37 seconds (1.30 work units)
Total elapsed time = 5.49s (DegenMoves)

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

     0     0   34.00000    0  491          -   34.00000      -     -    5s
H    0     0                       9.0000000   34.00000   278%     -    8s
H    0     0                      12.0000000   34.00000   183%     -    8s
     0     0   34.00000    0  695   12.00000   34.00000   183%     -   13s
     0     0   34.00000    0  670   12.00000   34.00000   183%     -   14s
H    0     0                      13.0000000   34.00000   162%     -   30s
H    0     0                      14.0000000   34.00000   143%     -   30s
     0     0   34.00000    0  496   14.00000   34.00000   143%     -   30s
     0     0   34.00000    0  442   14.00000   34.00000   143%     -   31s
     0     0   34.00000    0  304   14.00000   34.00000   143%     -   41s
     0     0   34.00000    0  342   14.00000   34.00000   143%     -   41s
     0     0   34.00000    0  479   14.00000   34.00000   143%     -   50s

Cutting planes:
  Cover: 23
  Clique: 9
  MIR: 91
  StrongCG: 1
  GUB cover: 4
  Zero half: 23
  RLT: 49
  BQP: 1

Explored 1 nodes (60318 simplex iterations) in 50.07 seconds (45.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 13 12 9 

Time limit reached
Best objective 1.400000000000e+01, best bound 3.400000000000e+01, gap 142.8571%

Wrote result file './lp_solutions/grafo3959.42.sol'

