
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:40:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3371.55.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/grafo3371.55.lp
Reading time = 0.24 seconds
: 102184 rows, 3090 columns, 308902 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 102184 rows, 3090 columns and 308902 nonzeros
Model fingerprint: 0xb6b0339c
Variable types: 53 continuous, 3037 integer (3037 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 1876 rows and 45 columns
Presolve time: 1.11s
Presolved: 100308 rows, 3045 columns, 303640 nonzeros
Variable types: 0 continuous, 3045 integer (2992 binary)
Root relaxation presolved: 3045 rows, 103353 columns, 306685 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12480    3.2954731e+01   0.000000e+00   5.528945e+04      5s
   27549    3.2934293e+01   0.000000e+00   4.937964e+04     10s
   40980    3.2929731e+01   0.000000e+00   2.315625e+03     15s
   46024    3.3000000e+01   0.000000e+00   0.000000e+00     17s
   46024    3.3000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 3.300000e+01, 46024 iterations, 15.93 seconds (10.55 work units)
Total elapsed time = 33.25s (DegenMoves)

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

     0     0   33.00000    0  386          -   33.00000      -     -   34s
H    0     0                       5.0000000   33.00000   560%     -   39s
     0     0   33.00000    0  684    5.00000   33.00000   560%     -   47s
H    0     0                       9.0000000   33.00000   267%     -   48s
     0     0   33.00000    0  650    9.00000   33.00000   267%     -   49s

Cutting planes:
  Gomory: 2
  Cover: 9
  Clique: 5
  MIR: 121
  StrongCG: 2
  GUB cover: 4
  Zero half: 5
  RLT: 14
  BQP: 2

Explored 1 nodes (63302 simplex iterations) in 50.05 seconds (32.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.300000000000e+01, gap 266.6667%

Wrote result file './lp_solutions/grafo3371.55.sol'

