
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:12:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5208.39.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/grafo5208.39.lp
Reading time = 0.31 seconds
: 193965 rows, 2272 columns, 583881 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 193965 rows, 2272 columns and 583881 nonzeros
Model fingerprint: 0xe152331c
Variable types: 47 continuous, 2225 integer (2225 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 78264 rows and 15 columns
Presolve time: 1.35s
Presolved: 115701 rows, 2257 columns, 349444 nonzeros
Variable types: 0 continuous, 2257 integer (2210 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2242 rows, 117943 columns, 351701 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22835    5.3974796e+01   0.000000e+00   4.033269e+04      5s
   47131    4.9947438e+01   0.000000e+00   4.343046e+03     10s
   71406    4.9943538e+01   0.000000e+00   2.514183e+02     15s
   80822    5.0000000e+01   0.000000e+00   0.000000e+00     17s
   80822    5.0000000e+01   0.000000e+00   0.000000e+00     17s
   80822    5.0000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 5.000000e+01, 80822 iterations, 15.52 seconds (14.01 work units)
Total elapsed time = 45.16s (DegenMoves)

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

     0     0   50.00000    0  877    9.00000   50.00000   456%     -   50s

Explored 1 nodes (96863 simplex iterations) in 50.05 seconds (54.14 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

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

Wrote result file './lp_solutions/grafo5208.39.sol'

