
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:31:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4088.45.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/grafo4088.45.lp
Reading time = 0.23 seconds
: 142712 rows, 2562 columns, 430226 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 142712 rows, 2562 columns and 430226 nonzeros
Model fingerprint: 0x58b2f1a9
Variable types: 49 continuous, 2513 integer (2513 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 43360 rows and 21 columns
Presolve time: 1.02s
Presolved: 99352 rows, 2541 columns, 300466 nonzeros
Variable types: 0 continuous, 2541 integer (2492 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2538 rows, 101890 columns, 303007 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20588    5.6826636e+01   0.000000e+00   3.182820e+04      5s
   44248    5.5781755e+01   0.000000e+00   1.750993e+02     10s
   46617    5.6000000e+01   0.000000e+00   0.000000e+00     11s
   46617    5.6000000e+01   0.000000e+00   0.000000e+00     11s
   46617    5.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.600000e+01, 46617 iterations, 9.44 seconds (7.76 work units)
Total elapsed time = 25.33s (DegenMoves)

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

     0     0   56.00000    0  651    5.00000   56.00000  1020%     -   28s
H    0     0                       7.0000000   56.00000   700%     -   28s
     0     0   56.00000    0 1006    7.00000   56.00000   700%     -   47s
H    0     0                       9.0000000   56.00000   522%     -   48s
     0     0   56.00000    0  965    9.00000   56.00000   522%     -   48s

Cutting planes:
  Gomory: 2
  Cover: 25
  Clique: 13
  MIR: 202
  StrongCG: 2
  GUB cover: 1
  Zero half: 65
  RLT: 25
  BQP: 2

Explored 1 nodes (70657 simplex iterations) in 50.40 seconds (50.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.600000000000e+01, gap 522.2222%

Wrote result file './lp_solutions/grafo4088.45.sol'

