
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:39:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3430.39.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/grafo3430.39.lp
Reading time = 0.36 seconds
: 220457 rows, 2266 columns, 663316 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 220457 rows, 2266 columns and 663316 nonzeros
Model fingerprint: 0xb49631d2
Variable types: 46 continuous, 2220 integer (2220 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 -0.0000000
Presolve removed 93483 rows and 15 columns
Presolve time: 1.54s
Presolved: 126974 rows, 2251 columns, 383200 nonzeros
Variable types: 0 continuous, 2251 integer (2205 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2248 rows, 129222 columns, 385451 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21404    7.3998193e+01   0.000000e+00   1.540399e+05      5s
   44570    5.2867611e+01   0.000000e+00   1.237125e+05     10s
   69667    5.2827384e+01   0.000000e+00   4.218640e+03     15s
   87792    5.3000000e+01   0.000000e+00   0.000000e+00     19s
   87792    5.3000000e+01   0.000000e+00   0.000000e+00     19s
   87792    5.3000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.300000e+01, 87792 iterations, 17.13 seconds (12.59 work units)
Total elapsed time = 32.93s (DegenMoves)
Total elapsed time = 35.71s (DegenMoves)

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

     0     0   53.00000    0  541    6.00000   53.00000   783%     -   41s
H    0     0                       8.0000000   53.00000   562%     -   41s
H    0     0                       9.0000000   53.00000   489%     -   41s
     0     0          -    0         9.00000   53.00000   489%     -   50s

Cutting planes:
  Gomory: 27
  Cover: 54
  Clique: 59
  MIR: 168
  StrongCG: 1
  GUB cover: 1
  Zero half: 77
  RLT: 102
  BQP: 14

Explored 1 nodes (105190 simplex iterations) in 50.05 seconds (53.61 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 6 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 5.300000000000e+01, gap 488.8889%

Wrote result file './lp_solutions/grafo3430.39.sol'

