
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:33:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3213.44.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/grafo3213.44.lp
Reading time = 0.33 seconds
: 170689 rows, 2795 columns, 514667 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 170689 rows, 2795 columns and 514667 nonzeros
Model fingerprint: 0x25042be1
Variable types: 54 continuous, 2741 integer (2741 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 51429 rows and 30 columns
Presolve time: 1.71s
Presolved: 119260 rows, 2765 columns, 360738 nonzeros
Variable types: 0 continuous, 2765 integer (2711 binary)
Root relaxation presolved: 2765 rows, 122025 columns, 363503 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11961    5.1849196e+01   0.000000e+00   1.907233e+05      5s
   28608    5.1698450e+01   0.000000e+00   3.113363e+04     10s
   43728    5.1681264e+01   0.000000e+00   1.108297e+04     15s
   56832    5.1678060e+01   0.000000e+00   5.463946e+00     20s
   57386    5.2000000e+01   0.000000e+00   0.000000e+00     20s
   57386    5.2000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 5.200000e+01, 57386 iterations, 18.36 seconds (10.90 work units)
Total elapsed time = 44.12s (DegenMoves)
Total elapsed time = 46.49s (DegenMoves)

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

     0     0   52.00000    0  774          -   52.00000      -     -   50s
H    0     0                       3.0000000   52.00000  1633%     -   50s

Explored 1 nodes (73842 simplex iterations) in 50.08 seconds (40.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 5.200000000000e+01, gap 1633.3333%

Wrote result file './lp_solutions/grafo3213.44.sol'

