
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:42:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3283.47.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/grafo3283.47.lp
Reading time = 0.51 seconds
: 297256 rows, 3234 columns, 894823 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 297256 rows, 3234 columns and 894823 nonzeros
Model fingerprint: 0xc7ecc2dd
Variable types: 57 continuous, 3177 integer (3177 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 126148 rows and 47 columns
Presolve time: 2.11s
Presolved: 171108 rows, 3187 columns, 516745 nonzeros
Variable types: 0 continuous, 3187 integer (3130 binary)
Root relaxation presolved: 3178 rows, 174286 columns, 519932 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12014    1.1183996e+02   0.000000e+00   2.191408e+06      5s
   29559    6.2210013e+01   0.000000e+00   1.991342e+05     10s
   43659    5.6646204e+01   0.000000e+00   7.831862e+04     15s
   58082    5.6611495e+01   0.000000e+00   1.088123e+05     20s
   70394    5.6597564e+01   0.000000e+00   5.522723e+04     25s
   83390    5.6588275e+01   0.000000e+00   2.248335e+04     30s
   97754    5.6582626e+01   0.000000e+00   1.466159e+04     35s
  109389    5.6579374e+01   0.000000e+00   7.160953e+03     40s
  123753    5.6576993e+01   0.000000e+00   2.392290e+03     45s

Root relaxation: time limit, 0 iterations, 47.48 seconds (31.68 work units)

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

H    0     0                       8.0000000  332.00000  4050%     -   50s

Explored 1 nodes (0 simplex iterations) in 50.06 seconds (34.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.320000000000e+02, gap 4050.0000%

Wrote result file './lp_solutions/grafo3283.47.sol'

