
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:04:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7518.46.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/grafo7518.46.lp
Reading time = 0.91 seconds
: 446524 rows, 3776 columns, 1343465 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 446524 rows, 3776 columns and 1343465 nonzeros
Model fingerprint: 0xd7229a31
Variable types: 65 continuous, 3711 integer (3711 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 177030 rows and 27 columns
Presolve time: 4.32s
Presolved: 269494 rows, 3749 columns, 812986 nonzeros
Variable types: 0 continuous, 3749 integer (3684 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 3737 rows, 273231 columns, 816735 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
       0    9.8862000e+02   0.000000e+00   1.434497e+06      6s
   15787    1.4334088e+02   0.000000e+00   5.748690e+05     10s
   29160    1.1281346e+02   0.000000e+00   1.663055e+06     15s
   40607    9.5678330e+01   0.000000e+00   1.275171e+06     20s
   50662    8.2619647e+01   0.000000e+00   4.106340e+05     25s
   60502    7.6581362e+01   0.000000e+00   3.945984e+05     30s
   69400    7.6548650e+01   0.000000e+00   2.322949e+05     35s
   79240    7.6520608e+01   0.000000e+00   2.282237e+05     40s
   88096    7.6502341e+01   0.000000e+00   8.083210e+04     45s

Root relaxation: time limit, 97574 iterations, 44.86 seconds (25.55 work units)

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

     0     0          -    0         4.00000  429.00000      -     -   50s

Explored 1 nodes (97574 simplex iterations) in 50.05 seconds (29.60 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 4.290000000000e+02, gap 10625.0000%

Wrote result file './lp_solutions/grafo7518.46.sol'

