
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:11:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3783.46.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/grafo3783.46.lp
Reading time = 0.15 seconds
: 91517 rows, 2539 columns, 276601 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 91517 rows, 2539 columns and 276601 nonzeros
Model fingerprint: 0x20af6a7c
Variable types: 49 continuous, 2490 integer (2490 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 14052 rows and 27 columns
Presolve time: 0.62s
Presolved: 77465 rows, 2512 columns, 234802 nonzeros
Variable types: 0 continuous, 2512 integer (2463 binary)
Root relaxation presolved: 2512 rows, 79977 columns, 237314 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23185    4.7937215e+01   0.000000e+00   2.500489e+03      5s
   42233    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   42233    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 42233 iterations, 8.69 seconds (7.52 work units)
Total elapsed time = 20.51s (DegenMoves)

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

     0     0   48.00000    0  607          -   48.00000      -     -   24s
H    0     0                      10.0000000   48.00000   380%     -   24s
H    0     0                      12.0000000   48.00000   300%     -   24s
     0     0   48.00000    0  854   12.00000   48.00000   300%     -   38s
     0     0   48.00000    0  836   12.00000   48.00000   300%     -   39s
     0     0          -    0        12.00000   48.00000   300%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 29
  Cover: 9
  Clique: 4
  MIR: 93
  GUB cover: 1
  Zero half: 14
  RLT: 51

Explored 1 nodes (70241 simplex iterations) in 50.02 seconds (48.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 10 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo3783.46.sol'

