
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:26:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3256.45.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/grafo3256.45.lp
Reading time = 0.37 seconds
: 232805 rows, 2952 columns, 701034 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 232805 rows, 2952 columns and 701034 nonzeros
Model fingerprint: 0x6979781a
Variable types: 54 continuous, 2898 integer (2898 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]
Found heuristic solution: objective -0.0000000
Presolve removed 86424 rows and 18 columns
Presolve time: 1.61s
Presolved: 146381 rows, 2934 columns, 442203 nonzeros
Variable types: 0 continuous, 2934 integer (2880 binary)
Found heuristic solution: objective 15.0000000
Root relaxation presolved: 2925 rows, 149306 columns, 445137 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16906    8.5914442e+01   0.000000e+00   5.910748e+06      5s
   34422    7.0790165e+01   0.000000e+00   2.353211e+05     10s
   53315    6.8693766e+01   0.000000e+00   1.177396e+05     15s
   72185    6.8665725e+01   0.000000e+00   1.079151e+04     20s
   90426    6.8657688e+01   0.000000e+00   7.378813e+02     25s
  105875    6.9000000e+01   0.000000e+00   0.000000e+00     30s
  105875    6.9000000e+01   0.000000e+00   0.000000e+00     30s
  105875    6.9000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 6.900000e+01, 105875 iterations, 27.77 seconds (21.43 work units)
Total elapsed time = 30.00s (DegenMoves)

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

     0     0   69.00000    0 1629   15.00000   69.00000   360%     -   50s

Explored 1 nodes (114609 simplex iterations) in 50.05 seconds (43.40 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 -0 

Time limit reached
Best objective 1.500000000000e+01, best bound 6.900000000000e+01, gap 360.0000%

Wrote result file './lp_solutions/grafo3256.45.sol'

