
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:49:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3964.38.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/grafo3964.38.lp
Reading time = 0.28 seconds
: 171434 rows, 2191 columns, 516287 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 171434 rows, 2191 columns and 516287 nonzeros
Model fingerprint: 0x9e31f7fb
Variable types: 46 continuous, 2145 integer (2145 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 72731 rows and 13 columns
Presolve time: 1.16s
Presolved: 98703 rows, 2178 columns, 298492 nonzeros
Variable types: 0 continuous, 2178 integer (2132 binary)
Root relaxation presolved: 2171 rows, 100874 columns, 300670 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22533    4.8937717e+01   0.000000e+00   2.632162e+04      5s
   47019    4.8921528e+01   0.000000e+00   5.927997e+02     10s
   51959    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   51959    4.9000000e+01   0.000000e+00   0.000000e+00     11s
   51959    4.9000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.900000e+01, 51959 iterations, 9.69 seconds (7.69 work units)
Total elapsed time = 21.64s (DegenMoves)
Total elapsed time = 25.59s (DegenMoves)

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

     0     0   49.00000    0  457          -   49.00000      -     -   27s
H    0     0                       7.0000000   49.00000   600%     -   27s
H    0     0                       9.0000000   49.00000   444%     -   27s
H    0     0                      10.0000000   49.00000   390%     -   27s
     0     0   49.00000    0  760   10.00000   49.00000   390%     -   39s
H    0     0                      13.0000000   49.00000   277%     -   40s
     0     0   49.00000    0  758   13.00000   49.00000   277%     -   41s
     0     0          -    0        13.00000   49.00000   277%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 37
  Cover: 10
  Clique: 27
  MIR: 109
  StrongCG: 1
  GUB cover: 1
  Zero half: 26
  RLT: 82
  BQP: 2

Explored 1 nodes (73514 simplex iterations) in 50.02 seconds (53.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 10 9 7 

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

Wrote result file './lp_solutions/grafo3964.38.sol'

