
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:39:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3659.44.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/grafo3659.44.lp
Reading time = 0.28 seconds
: 132348 rows, 2580 columns, 399261 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 132348 rows, 2580 columns and 399261 nonzeros
Model fingerprint: 0xc71f3ea2
Variable types: 49 continuous, 2531 integer (2531 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 42018 rows and 60 columns
Presolve time: 1.23s
Presolved: 90330 rows, 2520 columns, 273606 nonzeros
Variable types: 0 continuous, 2520 integer (2471 binary)
Root relaxation presolved: 2520 rows, 92850 columns, 276126 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13872    5.2835847e+01   0.000000e+00   4.727256e+04      5s
   31008    5.2780216e+01   0.000000e+00   3.967737e+03     10s
   48144    5.2774828e+01   0.000000e+00   1.238171e+00     15s
   48733    5.3000000e+01   0.000000e+00   0.000000e+00     15s
   48733    5.3000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.300000e+01, 48733 iterations, 13.77 seconds (7.75 work units)
Total elapsed time = 30.85s (DegenMoves)
Total elapsed time = 35.16s (DegenMoves)

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

     0     0   53.00000    0  614          -   53.00000      -     -   36s
H    0     0                       8.0000000   53.00000   562%     -   40s
     0     0          -    0         8.00000   53.00000   562%     -   50s

Cutting planes:
  Gomory: 31
  Cover: 27
  Clique: 13
  MIR: 85
  GUB cover: 2
  Zero half: 19
  RLT: 35
  BQP: 3

Explored 1 nodes (68791 simplex iterations) in 50.03 seconds (39.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.300000000000e+01, gap 562.5000%

Wrote result file './lp_solutions/grafo3659.44.sol'

