
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:46:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4662.50.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/grafo4662.50.lp
Reading time = 0.21 seconds
: 126526 rows, 3203 columns, 382442 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 126526 rows, 3203 columns and 382442 nonzeros
Model fingerprint: 0xcb1a95b1
Variable types: 57 continuous, 3146 integer (3146 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 17935 rows and 18 columns
Presolve time: 0.83s
Presolved: 108591 rows, 3185 columns, 329075 nonzeros
Variable types: 0 continuous, 3185 integer (3128 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 3175 rows, 111766 columns, 332260 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18187    5.3940905e+01   0.000000e+00   5.522459e+04      5s
   36161    5.3922682e+01   0.000000e+00   4.875813e+03     10s
   51627    5.3920261e+01   0.000000e+00   5.564167e+02     15s
   58794    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   58794    5.4000000e+01   0.000000e+00   0.000000e+00     18s
   58794    5.4000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.400000e+01, 58794 iterations, 16.48 seconds (13.58 work units)
Total elapsed time = 39.68s (DegenMoves)

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

     0     0   54.00000    0  834   13.00000   54.00000   315%     -   50s

Explored 1 nodes (80257 simplex iterations) in 50.04 seconds (50.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 13 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.400000000000e+01, gap 315.3846%

Wrote result file './lp_solutions/grafo4662.50.sol'

