
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 20:22:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5142.36.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/grafo5142.36.lp
Reading time = 0.17 seconds
: 105246 rows, 1909 columns, 317335 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 105246 rows, 1909 columns and 317335 nonzeros
Model fingerprint: 0x249962fe
Variable types: 43 continuous, 1866 integer (1866 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]
Found heuristic solution: objective 2.0000000
Presolve removed 37248 rows and 20 columns
Presolve time: 0.74s
Presolved: 67998 rows, 1889 columns, 205990 nonzeros
Variable types: 0 continuous, 1889 integer (1846 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1889 rows, 69887 columns, 207879 nonzeros


Root relaxation: objective 4.900000e+01, 2209 iterations, 0.61 seconds (0.66 work units)
Total elapsed time = 5.85s (DegenMoves)

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

     0     0   49.00000    0  456   11.00000   49.00000   345%     -    6s
H    0     0                      12.0000000   49.00000   308%     -    6s
     0     0   49.00000    0  898   12.00000   49.00000   308%     -   24s
H    0     0                      13.0000000   49.00000   277%     -   26s
     0     0   49.00000    0  810   13.00000   49.00000   277%     -   26s
     0     0   49.00000    0  844   13.00000   49.00000   277%     -   50s

Cutting planes:
  Gomory: 3
  Cover: 9
  Clique: 17
  MIR: 109
  Zero half: 68
  RLT: 75

Explored 1 nodes (33248 simplex iterations) in 50.07 seconds (43.92 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 12 11 2 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.900000000000e+01, gap 276.9231%

Wrote result file './lp_solutions/grafo5142.36.sol'

