
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:44:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3667.44.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/grafo3667.44.lp
Reading time = 0.24 seconds
: 148017 rows, 2389 columns, 445925 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 148017 rows, 2389 columns and 445925 nonzeros
Model fingerprint: 0x592c59e4
Variable types: 46 continuous, 2343 integer (2343 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 1.0000000
Presolve removed 50328 rows and 15 columns
Presolve time: 0.99s
Presolved: 97689 rows, 2374 columns, 295318 nonzeros
Variable types: 0 continuous, 2374 integer (2328 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2362 rows, 100051 columns, 297692 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22678    4.7801757e+01   0.000000e+00   1.235478e+04      5s
   42356    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   42356    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   42356    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 42356 iterations, 7.89 seconds (6.39 work units)
Total elapsed time = 18.48s (DegenMoves)
Total elapsed time = 20.45s (DegenMoves)

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

     0     0   48.00000    0  464    9.00000   48.00000   433%     -   21s
     0     0   48.00000    0  848    9.00000   48.00000   433%     -   39s
     0     0   48.00000    0  790    9.00000   48.00000   433%     -   41s
     0     0          -    0         9.00000   48.00000   433%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 48
  Cover: 10
  Clique: 22
  MIR: 99
  GUB cover: 1
  Zero half: 32
  RLT: 58
  BQP: 3

Explored 1 nodes (64450 simplex iterations) in 50.03 seconds (51.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.800000000000e+01, gap 433.3333%

Wrote result file './lp_solutions/grafo3667.44.sol'

