
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:14:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3694.41.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/grafo3694.41.lp
Reading time = 0.44 seconds
: 218801 rows, 2993 columns, 659423 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 218801 rows, 2993 columns and 659423 nonzeros
Model fingerprint: 0x1465fb6e
Variable types: 57 continuous, 2936 integer (2936 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 76166 rows and 13 columns
Presolve time: 1.79s
Presolved: 142635 rows, 2980 columns, 431388 nonzeros
Variable types: 0 continuous, 2980 integer (2923 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2975 rows, 145610 columns, 434368 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12923    1.1674538e+02   0.000000e+00   5.227529e+05      6s
   28990    7.0427507e+01   0.000000e+00   3.099478e+05     11s
   41756    6.5849523e+01   0.000000e+00   1.008807e+05     15s
   55076    6.5789914e+01   0.000000e+00   5.578302e+04     20s
   68254    6.5758431e+01   0.000000e+00   6.060984e+04     25s
   81278    6.5742229e+01   0.000000e+00   2.852645e+04     30s
   94302    6.5732418e+01   0.000000e+00   9.210897e+03     35s
  107326    6.5727108e+01   0.000000e+00   3.843996e+03     40s
  120350    6.5724011e+01   0.000000e+00   4.848647e+03     45s

Root relaxation: time limit, 133578 iterations, 47.77 seconds (28.39 work units)

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

     0     0          -    0         9.00000  373.00000  4044%     -   50s

Explored 1 nodes (133578 simplex iterations) in 50.02 seconds (30.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.730000000000e+02, gap 4044.4444%

Wrote result file './lp_solutions/grafo3694.41.sol'

