
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:27:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2788.49.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/grafo2788.49.lp
Reading time = 0.19 seconds
: 109217 rows, 2809 columns, 329903 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 109217 rows, 2809 columns and 329903 nonzeros
Model fingerprint: 0xc4d11399
Variable types: 51 continuous, 2758 integer (2758 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 17755 rows and 1 columns
Presolve time: 0.68s
Presolved: 91462 rows, 2808 columns, 277024 nonzeros
Variable types: 0 continuous, 2808 integer (2757 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2784 rows, 94246 columns, 279832 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18389    4.9930243e+01   0.000000e+00   3.506899e+04      5s
   34437    4.9909263e+01   0.000000e+00   2.702233e+04     10s
   50261    4.9901986e+01   0.000000e+00   2.054281e+03     15s
   60918    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   60918    5.0000000e+01   0.000000e+00   0.000000e+00     19s
   60918    5.0000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.000000e+01, 60918 iterations, 17.68 seconds (15.21 work units)
Total elapsed time = 39.62s (DegenMoves)

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

     0     0   50.00000    0  825    9.00000   50.00000   456%     -   50s

Explored 1 nodes (84479 simplex iterations) in 50.04 seconds (50.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.000000000000e+01, gap 455.5556%

Wrote result file './lp_solutions/grafo2788.49.sol'

