
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:25:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5637.41.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/grafo5637.41.lp
Reading time = 0.41 seconds
: 124322 rows, 2187 columns, 374786 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 124322 rows, 2187 columns and 374786 nonzeros
Model fingerprint: 0x361fdf83
Variable types: 44 continuous, 2143 integer (2143 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 62876 rows and 81 columns
Presolve time: 0.87s
Presolved: 61446 rows, 2106 columns, 186500 nonzeros
Variable types: 0 continuous, 2106 integer (2062 binary)
Root relaxation presolved: 2099 rows, 63545 columns, 188606 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20513    4.1954483e+01   0.000000e+00   5.971485e+03      5s
   35269    4.2000000e+01   0.000000e+00   0.000000e+00      9s
   35269    4.2000000e+01   0.000000e+00   0.000000e+00      9s
   35269    4.2000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.200000e+01, 35269 iterations, 7.58 seconds (5.06 work units)
Total elapsed time = 17.47s (DegenMoves)
Total elapsed time = 23.49s (DegenMoves)
Total elapsed time = 25.29s (DegenMoves)

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

     0     0   42.00000    0  444          -   42.00000      -     -   25s
H    0     0                      12.0000000   42.00000   250%     -   26s
H    0     0                      14.0000000   42.00000   200%     -   26s
     0     0   42.00000    0  686   14.00000   42.00000   200%     -   37s
     0     0   42.00000    0  621   14.00000   42.00000   200%     -   38s
     0     0   42.00000    0  618   14.00000   42.00000   200%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 37
  Cover: 10
  Clique: 11
  MIR: 90
  Zero half: 23
  RLT: 45
  BQP: 3
  PSD: 2

Explored 1 nodes (64788 simplex iterations) in 50.09 seconds (37.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 12 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.200000000000e+01, gap 200.0000%

Wrote result file './lp_solutions/grafo5637.41.sol'

