
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:11:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3613.41.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/grafo3613.41.lp
Reading time = 0.74 seconds
: 356486 rows, 2402 columns, 1071546 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 356486 rows, 2402 columns and 1071546 nonzeros
Model fingerprint: 0x3a4d4d43
Variable types: 47 continuous, 2355 integer (2355 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 3.0000000
Presolve removed 160545 rows and 20 columns
Presolve time: 3.56s
Presolved: 195941 rows, 2382 columns, 590257 nonzeros
Variable types: 0 continuous, 2382 integer (2335 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2382 rows, 198323 columns, 592639 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    2957    1.7537389e+02   0.000000e+00   1.194713e+06      5s
   30769    6.0026847e+01   0.000000e+00   8.553141e+06     10s
   48059    5.1881469e+01   0.000000e+00   9.296155e+04     15s
   66079    5.1817031e+01   0.000000e+00   8.566727e+04     20s
   86340    5.1793248e+01   0.000000e+00   3.103016e+04     25s
  106552    5.1781613e+01   0.000000e+00   8.102462e+03     30s
  126758    5.1777933e+01   0.000000e+00   2.553550e+01     35s
  132837    5.2000000e+01   0.000000e+00   0.000000e+00     37s
  132837    5.2000000e+01   0.000000e+00   0.000000e+00     37s

Root relaxation: objective 5.200000e+01, 132837 iterations, 32.83 seconds (19.50 work units)

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

     0     0   52.00000    0 1320   10.00000   52.00000   420%     -   50s

Explored 1 nodes (137661 simplex iterations) in 50.13 seconds (33.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 3 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.200000000000e+01, gap 420.0000%

Wrote result file './lp_solutions/grafo3613.41.sol'

