
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:56:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5257.38.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/grafo5257.38.lp
Reading time = 0.14 seconds
: 86203 rows, 1622 columns, 259700 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 86203 rows, 1622 columns and 259700 nonzeros
Model fingerprint: 0x35a10336
Variable types: 36 continuous, 1586 integer (1586 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 30538 rows and 16 columns
Presolve time: 0.57s
Presolved: 55665 rows, 1606 columns, 168270 nonzeros
Variable types: 0 continuous, 1606 integer (1570 binary)
Root relaxation presolved: 1606 rows, 57271 columns, 169876 nonzeros


Root relaxation: objective 4.000000e+01, 2464 iterations, 0.66 seconds (0.81 work units)
Total elapsed time = 7.16s (DegenMoves)

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

     0     0   40.00000    0  550          -   40.00000      -     -    8s
H    0     0                      12.0000000   40.00000   233%     -    8s
     0     0   40.00000    0  644   12.00000   40.00000   233%     -   15s
H    0     0                      13.0000000   40.00000   208%     -   16s
     0     0   40.00000    0  589   13.00000   40.00000   208%     -   16s
     0     0   40.00000    0  457   13.00000   40.00000   208%     -   43s
H    0     0                      14.0000000   40.00000   186%     -   43s
     0     0   40.00000    0  463   14.00000   40.00000   186%     -   44s
     0     0   40.00000    0  593   14.00000   40.00000   186%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 29
  Clique: 18
  MIR: 120
  StrongCG: 2
  Zero half: 74
  RLT: 65

Explored 1 nodes (42740 simplex iterations) in 50.07 seconds (49.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 14 13 12 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.000000000000e+01, gap 185.7143%

Wrote result file './lp_solutions/grafo5257.38.sol'

