
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:31:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1624.44.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/grafo1624.44.lp
Reading time = 0.16 seconds
: 84058 rows, 2396 columns, 254143 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 84058 rows, 2396 columns and 254143 nonzeros
Model fingerprint: 0x7ab6865f
Variable types: 46 continuous, 2350 integer (2350 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 19414 rows and 74 columns
Presolve time: 0.52s
Presolved: 64644 rows, 2322 columns, 196114 nonzeros
Variable types: 0 continuous, 2322 integer (2276 binary)
Root relaxation presolved: 2314 rows, 66958 columns, 198436 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21395    4.8943884e+01   0.000000e+00   6.928444e+03      5s
   31912    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   31912    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   31912    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 31912 iterations, 7.11 seconds (4.79 work units)
Total elapsed time = 14.83s (DegenMoves)
Total elapsed time = 15.19s (DegenMoves)

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

     0     0   49.00000    0  398          -   49.00000      -     -   15s
H    0     0                      13.0000000   49.00000   277%     -   18s
     0     0   49.00000    0  595   13.00000   49.00000   277%     -   21s
H    0     0                      15.0000000   49.00000   227%     -   22s
     0     0   49.00000    0  596   15.00000   49.00000   227%     -   23s
H    0     0                      16.0000000   49.00000   206%     -   40s
H    0     0                      17.0000000   49.00000   188%     -   40s
H    0     0                      20.0000000   49.00000   145%     -   40s
     0     0   49.00000    0  500   20.00000   49.00000   145%     -   40s
     0     0   49.00000    0  531   20.00000   49.00000   145%     -   42s
     0     0   49.00000    0  570   20.00000   49.00000   145%     -   50s

Cutting planes:
  Cover: 28
  Clique: 12
  MIR: 180
  Zero half: 75
  RLT: 77
  BQP: 1

Explored 1 nodes (64015 simplex iterations) in 50.09 seconds (33.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 20 17 16 ... 13

Time limit reached
Best objective 2.000000000000e+01, best bound 4.900000000000e+01, gap 145.0000%

Wrote result file './lp_solutions/grafo1624.44.sol'

