
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 09:00:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo9879.37.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/grafo9879.37.lp
Reading time = 0.13 seconds
: 79199 rows, 1975 columns, 239336 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 79199 rows, 1975 columns and 239336 nonzeros
Model fingerprint: 0x48a3c846
Variable types: 45 continuous, 1930 integer (1930 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 5.0000000
Presolve removed 20201 rows and 15 columns
Presolve time: 0.49s
Presolved: 58998 rows, 1960 columns, 179115 nonzeros
Variable types: 0 continuous, 1960 integer (1915 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 1951 rows, 60949 columns, 181075 nonzeros


Root relaxation: objective 4.200000e+01, 1526 iterations, 0.33 seconds (0.30 work units)

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

     0     0   42.00000    0  301   12.00000   42.00000   250%     -    2s
H    0     0                      13.0000000   42.00000   223%     -    3s
     0     0   42.00000    0  608   13.00000   42.00000   223%     -    8s
     0     0   42.00000    0  597   13.00000   42.00000   223%     -    8s
H    0     0                      15.0000000   42.00000   180%     -   10s
     0     0   42.00000    0  398   15.00000   42.00000   180%     -   32s
     0     0   42.00000    0  443   15.00000   42.00000   180%     -   33s
     0     0   42.00000    0  428   15.00000   42.00000   180%     -   47s
     0     0   42.00000    0  447   15.00000   42.00000   180%     -   49s
     0     0          -    0        15.00000   42.00000   180%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 31
  Clique: 10
  MIR: 130
  StrongCG: 1
  Zero half: 41
  RLT: 73

Explored 1 nodes (45884 simplex iterations) in 50.05 seconds (47.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 15 13 12 5 

Time limit reached
Best objective 1.500000000000e+01, best bound 4.200000000000e+01, gap 180.0000%

Wrote result file './lp_solutions/grafo9879.37.sol'

