
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:28:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5978.41.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/grafo5978.41.lp
Reading time = 0.18 seconds
: 84264 rows, 2160 columns, 254550 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 84264 rows, 2160 columns and 254550 nonzeros
Model fingerprint: 0x08bf0a25
Variable types: 43 continuous, 2117 integer (2117 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 25037 rows and 59 columns
Presolve time: 0.76s
Presolved: 59227 rows, 2101 columns, 179973 nonzeros
Variable types: 0 continuous, 2101 integer (2058 binary)
Root relaxation presolved: 2095 rows, 61322 columns, 182074 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20973    3.7966523e+01   0.000000e+00   1.450121e+04      5s
   37014    3.8000000e+01   0.000000e+00   0.000000e+00      9s
   37014    3.8000000e+01   0.000000e+00   0.000000e+00      9s
   37014    3.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 3.800000e+01, 37014 iterations, 7.93 seconds (5.05 work units)
Total elapsed time = 15.07s (DegenMoves)

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

     0     0   38.00000    0  370          -   38.00000      -     -   16s
H    0     0                       9.0000000   38.00000   322%     -   16s
H    0     0                      11.0000000   38.00000   245%     -   18s
H    0     0                      14.0000000   38.00000   171%     -   18s
     0     0   38.00000    0  648   14.00000   38.00000   171%     -   26s
H    0     0                      15.0000000   38.00000   153%     -   27s
     0     0   38.00000    0  599   15.00000   38.00000   153%     -   30s
     0     0   38.00000    0  405   15.00000   38.00000   153%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 26
  Cover: 13
  Clique: 8
  MIR: 134
  StrongCG: 1
  Zero half: 58
  RLT: 52

Explored 1 nodes (66660 simplex iterations) in 50.11 seconds (33.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 15 14 11 9 

Time limit reached
Best objective 1.500000000000e+01, best bound 3.800000000000e+01, gap 153.3333%

Wrote result file './lp_solutions/grafo5978.41.sol'

