
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:31:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6923.39.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/grafo6923.39.lp
Reading time = 0.12 seconds
: 76506 rows, 1923 columns, 231036 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 76506 rows, 1923 columns and 231036 nonzeros
Model fingerprint: 0x847cee31
Variable types: 42 continuous, 1881 integer (1881 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 22023 rows and 29 columns
Presolve time: 0.53s
Presolved: 54483 rows, 1894 columns, 165430 nonzeros
Variable types: 0 continuous, 1894 integer (1852 binary)
Root relaxation presolved: 1891 rows, 56374 columns, 167324 nonzeros


Root relaxation: objective 3.600000e+01, 1544 iterations, 0.31 seconds (0.27 work units)

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

     0     0   36.00000    0  349          -   36.00000      -     -    4s
H    0     0                      12.0000000   36.00000   200%     -    4s
H    0     0                      13.0000000   36.00000   177%     -    5s
H    0     0                      15.0000000   36.00000   140%     -    8s
     0     0   36.00000    0  571   15.00000   36.00000   140%     -    8s
     0     0   36.00000    0  571   15.00000   36.00000   140%     -    9s
H    0     0                      16.0000000   36.00000   125%     -   35s
H    0     0                      17.0000000   36.00000   112%     -   35s
H    0     0                      18.0000000   36.00000   100%     -   35s
     0     0   36.00000    0  368   18.00000   36.00000   100%     -   35s
     0     0   36.00000    0  365   18.00000   36.00000   100%     -   35s
H    0     0                      19.0000000   36.00000  89.5%     -   50s
H    0     0                      20.0000000   36.00000  80.0%     -   50s
     0     0   36.00000    0  372   20.00000   36.00000  80.0%     -   50s

Cutting planes:
  Clique: 5
  MIR: 4
  RLT: 9

Explored 1 nodes (57256 simplex iterations) in 50.10 seconds (47.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 20 19 18 ... 12

Time limit reached
Best objective 2.000000000000e+01, best bound 3.600000000000e+01, gap 80.0000%

Wrote result file './lp_solutions/grafo6923.39.sol'

