
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:41:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3232.47.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/grafo3232.47.lp
Reading time = 0.18 seconds
: 88527 rows, 2421 columns, 267411 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 88527 rows, 2421 columns and 267411 nonzeros
Model fingerprint: 0xb08eb6b6
Variable types: 46 continuous, 2375 integer (2375 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 14616 rows and 10 columns
Presolve time: 0.95s
Presolved: 73911 rows, 2411 columns, 223884 nonzeros
Variable types: 0 continuous, 2411 integer (2365 binary)
Root relaxation presolved: 2403 rows, 76314 columns, 226295 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16412    3.9716360e+01   0.000000e+00   1.754646e+04      5s
   34857    3.9702278e+01   0.000000e+00   1.195706e+02     10s
   39212    4.0000000e+01   0.000000e+00   0.000000e+00     11s
   39212    4.0000000e+01   0.000000e+00   0.000000e+00     11s
   39212    4.0000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.000000e+01, 39212 iterations, 10.14 seconds (6.63 work units)
Total elapsed time = 17.85s (DegenMoves)

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

     0     0   40.00000    0  266          -   40.00000      -     -   18s
H    0     0                      11.0000000   40.00000   264%     -   19s
H    0     0                      13.0000000   40.00000   208%     -   19s
H    0     0                      14.0000000   40.00000   186%     -   20s
     0     0   40.00000    0  525   14.00000   40.00000   186%     -   25s
H    0     0                      15.0000000   40.00000   167%     -   26s
     0     0   40.00000    0  513   15.00000   40.00000   167%     -   26s
H    0     0                      16.0000000   40.00000   150%     -   39s
     0     0   40.00000    0  422   16.00000   40.00000   150%     -   39s
H    0     0                      17.0000000   40.00000   135%     -   40s
     0     0   40.00000    0  406   17.00000   40.00000   135%     -   41s
H    0     0                      18.0000000   40.00000   122%     -   42s
     0     0   40.00000    0  500   18.00000   40.00000   122%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 24
  Clique: 8
  MIR: 141
  Zero half: 80
  RLT: 68
  BQP: 1

Explored 1 nodes (67105 simplex iterations) in 50.13 seconds (33.30 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 18 17 16 ... 11

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

Wrote result file './lp_solutions/grafo3232.47.sol'

