
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:29:36 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6759.52.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/grafo6759.52.lp
Reading time = 0.21 seconds
: 81997 rows, 2652 columns, 247762 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 81997 rows, 2652 columns and 247762 nonzeros
Model fingerprint: 0xa7dca227
Variable types: 47 continuous, 2605 integer (2605 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 1.0000000
Presolve removed 3550 rows and 0 columns
Presolve time: 0.75s
Presolved: 78447 rows, 2652 columns, 237403 nonzeros
Variable types: 0 continuous, 2652 integer (2605 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2607 rows, 81054 columns, 240055 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18043    3.8945649e+01   0.000000e+00   2.803521e+04      5s
   31759    3.9000000e+01   0.000000e+00   0.000000e+00     10s
   31759    3.9000000e+01   0.000000e+00   0.000000e+00     10s
   31759    3.9000000e+01   0.000000e+00   0.000000e+00     10s

Root relaxation: objective 3.900000e+01, 31759 iterations, 9.15 seconds (5.92 work units)
Total elapsed time = 29.10s (DegenMoves)

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

     0     0   39.00000    0 1005    7.00000   39.00000   457%     -   50s

Explored 1 nodes (62085 simplex iterations) in 50.03 seconds (44.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 1 

Time limit reached
Best objective 7.000000000000e+00, best bound 3.900000000000e+01, gap 457.1429%

Wrote result file './lp_solutions/grafo6759.52.sol'

