
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:13:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3279.45.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/grafo3279.45.lp
Reading time = 0.39 seconds
: 203885 rows, 3041 columns, 614543 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 203885 rows, 3041 columns and 614543 nonzeros
Model fingerprint: 0x65611023
Variable types: 56 continuous, 2985 integer (2985 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, 6e+01]
Presolve removed 66275 rows and 22 columns
Presolve time: 1.80s
Presolved: 137610 rows, 3019 columns, 416155 nonzeros
Variable types: 0 continuous, 3019 integer (2963 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 3013 rows, 140623 columns, 419174 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15084    7.4699560e+01   0.000000e+00   1.101637e+06      5s
   30965    5.7998059e+01   0.000000e+00   1.229506e+05     10s
   45002    5.7971183e+01   0.000000e+00   1.305736e+05     15s
   58323    5.7961972e+01   0.000000e+00   2.639473e+04     20s
   71089    5.7956653e+01   0.000000e+00   1.061812e+04     25s
   83855    5.7953989e+01   0.000000e+00   5.782311e+03     30s
   96620    5.7953415e+01   0.000000e+00   1.186548e+02     35s
  101822    5.8000000e+01   0.000000e+00   0.000000e+00     37s
  101822    5.8000000e+01   0.000000e+00   0.000000e+00     37s
  101822    5.8000000e+01   0.000000e+00   0.000000e+00     37s

Root relaxation: objective 5.800000e+01, 101822 iterations, 35.11 seconds (23.83 work units)

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

     0     0   58.00000    0 1749    7.00000   58.00000   729%     -   50s

Explored 1 nodes (106343 simplex iterations) in 50.05 seconds (37.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.800000000000e+01, gap 728.5714%

Wrote result file './lp_solutions/grafo3279.45.sol'

