
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:00:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7030.46.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/grafo7030.46.lp
Reading time = 0.40 seconds
: 185147 rows, 2989 columns, 558128 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 185147 rows, 2989 columns and 558128 nonzeros
Model fingerprint: 0x71ee8d26
Variable types: 54 continuous, 2935 integer (2935 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 57310 rows and 23 columns
Presolve time: 1.79s
Presolved: 127837 rows, 2966 columns, 386892 nonzeros
Variable types: 0 continuous, 2966 integer (2912 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2957 rows, 130794 columns, 389858 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11635    6.1803230e+01   0.000000e+00   3.849861e+05      5s
   27702    5.1707648e+01   0.000000e+00   8.170087e+04     10s
   41688    5.1683925e+01   0.000000e+00   1.247383e+04     15s
   55674    5.1677333e+01   0.000000e+00   2.776408e+04     20s
   68624    5.1676087e+01   0.000000e+00   6.402451e+01     25s
   69931    5.2000000e+01   0.000000e+00   0.000000e+00     26s
   69931    5.2000000e+01   0.000000e+00   0.000000e+00     26s
   69931    5.2000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 5.200000e+01, 69931 iterations, 23.64 seconds (13.25 work units)
Total elapsed time = 50.07s (DegenMoves)

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

     0     0  postponed    0         8.00000   52.00000   550%     -   50s

Explored 1 nodes (84014 simplex iterations) in 50.17 seconds (35.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.200000000000e+01, gap 550.0000%

Wrote result file './lp_solutions/grafo7030.46.sol'

