
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:05:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1236.48.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/grafo1236.48.lp
Reading time = 0.14 seconds
: 85422 rows, 2462 columns, 258078 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 85422 rows, 2462 columns and 258078 nonzeros
Model fingerprint: 0x950aa736
Variable types: 46 continuous, 2416 integer (2416 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 11559 rows and 17 columns
Presolve time: 0.58s
Presolved: 73863 rows, 2445 columns, 223746 nonzeros
Variable types: 0 continuous, 2445 integer (2399 binary)
Root relaxation presolved: 2439 rows, 76302 columns, 226191 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22540    3.7756875e+01   0.000000e+00   5.912480e+03      5s
   32667    3.8000000e+01   0.000000e+00   0.000000e+00      7s
   32667    3.8000000e+01   0.000000e+00   0.000000e+00      7s
   32667    3.8000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.800000e+01, 32667 iterations, 6.54 seconds (5.50 work units)
Total elapsed time = 13.45s (DegenMoves)

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

     0     0   38.00000    0  319          -   38.00000      -     -   14s
H    0     0                      11.0000000   38.00000   245%     -   14s
     0     0   38.00000    0  565   11.00000   38.00000   245%     -   19s
H    0     0                      14.0000000   38.00000   171%     -   20s
     0     0   38.00000    0  570   14.00000   38.00000   171%     -   20s
     0     0   38.00000    0  356   14.00000   38.00000   171%     -   31s
H    0     0                      15.0000000   38.00000   153%     -   32s
     0     0   38.00000    0  360   15.00000   38.00000   153%     -   32s
H    0     0                      16.0000000   38.00000   137%     -   34s
H    0     0                      17.0000000   38.00000   124%     -   34s
     0     0   38.00000    0  287   17.00000   38.00000   124%     -   42s
H    0     0                      18.0000000   38.00000   111%     -   42s
     0     0   38.00000    0  448   18.00000   38.00000   111%     -   43s
     0     0   38.00000    0  494   18.00000   38.00000   111%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 18
  Clique: 7
  MIR: 99
  StrongCG: 2
  GUB cover: 1
  Zero half: 82
  RLT: 63
  BQP: 2

Explored 1 nodes (70941 simplex iterations) in 50.09 seconds (39.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 18 17 16 ... 11

Time limit reached
Best objective 1.800000000000e+01, best bound 3.800000000000e+01, gap 111.1111%

Wrote result file './lp_solutions/grafo1236.48.sol'

