
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:02:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6243.37.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/grafo6243.37.lp
Reading time = 0.48 seconds
: 295418 rows, 2537 columns, 888751 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 295418 rows, 2537 columns and 888751 nonzeros
Model fingerprint: 0xa91f08b2
Variable types: 51 continuous, 2486 integer (2486 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 133121 rows and 19 columns
Presolve time: 2.16s
Presolved: 162297 rows, 2518 columns, 489909 nonzeros
Variable types: 0 continuous, 2518 integer (2467 binary)
Root relaxation presolved: 2515 rows, 164812 columns, 492427 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16049    1.1045166e+02   0.000000e+00   1.648589e+06      5s
   37877    6.0940280e+01   0.000000e+00   1.786640e+05     10s
   57094    5.6901395e+01   0.000000e+00   4.171226e+04     15s
   79788    5.6889054e+01   0.000000e+00   1.679395e+03     20s
  100543    5.6886034e+01   0.000000e+00   4.967339e+02     25s
  115184    5.7000000e+01   0.000000e+00   0.000000e+00     29s
  115184    5.7000000e+01   0.000000e+00   0.000000e+00     29s
  115184    5.7000000e+01   0.000000e+00   0.000000e+00     29s

Root relaxation: objective 5.700000e+01, 115184 iterations, 26.31 seconds (21.77 work units)

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

     0     0   57.00000    0 1620          -   57.00000      -     -   50s
H    0     0                       2.0000000   57.00000  2750%     -   50s

Explored 1 nodes (122406 simplex iterations) in 50.07 seconds (45.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 2 

Time limit reached
Best objective 2.000000000000e+00, best bound 5.700000000000e+01, gap 2750.0000%

Wrote result file './lp_solutions/grafo6243.37.sol'

