
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:59:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7315.50.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/grafo7315.50.lp
Reading time = 0.25 seconds
: 156052 rows, 3102 columns, 470719 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 156052 rows, 3102 columns and 470719 nonzeros
Model fingerprint: 0xd31571e1
Variable types: 54 continuous, 3048 integer (3048 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 38679 rows and 22 columns
Presolve time: 1.04s
Presolved: 117373 rows, 3080 columns, 355138 nonzeros
Variable types: 0 continuous, 3080 integer (3026 binary)
Root relaxation presolved: 3075 rows, 120448 columns, 358218 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18205    6.6712228e+01   0.000000e+00   1.595432e+05      5s
   36990    6.4673281e+01   0.000000e+00   1.153656e+04     10s
   53786    6.4665291e+01   0.000000e+00   1.450566e+03     15s
   70582    6.4663161e+01   0.000000e+00   2.052207e+01     20s
   71552    6.5000000e+01   0.000000e+00   0.000000e+00     20s
   71552    6.5000000e+01   0.000000e+00   0.000000e+00     20s
   71552    6.5000000e+01   0.000000e+00   0.000000e+00     21s

Root relaxation: objective 6.500000e+01, 71552 iterations, 19.22 seconds (15.27 work units)

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

     0     0   65.00000    0 1838          -   65.00000      -     -   50s
H    0     0                       3.0000000   65.00000  2067%     -   50s

Explored 1 nodes (87506 simplex iterations) in 50.05 seconds (44.65 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 6.500000000000e+01, gap 2066.6667%

Wrote result file './lp_solutions/grafo7315.50.sol'

