
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 04:25:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3291.35.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/grafo3291.35.lp
Reading time = 0.32 seconds
: 198205 rows, 1708 columns, 596037 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 198205 rows, 1708 columns and 596037 nonzeros
Model fingerprint: 0x38d4742f
Variable types: 39 continuous, 1669 integer (1669 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 89103 rows and 6 columns
Presolve time: 1.45s
Presolved: 109102 rows, 1702 columns, 328871 nonzeros
Variable types: 0 continuous, 1702 integer (1663 binary)
Root relaxation presolved: 1700 rows, 110802 columns, 330573 nonzeros


Root relaxation: objective 4.100000e+01, 2498 iterations, 1.15 seconds (1.40 work units)
Total elapsed time = 8.90s (DegenMoves)
Total elapsed time = 10.01s (DegenMoves)

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

     0     0   41.00000    0  281          -   41.00000      -     -   10s
H    0     0                       7.0000000   41.00000   486%     -   12s
     0     0   41.00000    0  660    7.00000   41.00000   486%     -   19s
     0     0   41.00000    0  643    7.00000   41.00000   486%     -   20s
     0     0   41.00000    0  475    7.00000   41.00000   486%     -   43s
H    0     0                       8.0000000   41.00000   412%     -   44s
     0     0   41.00000    0  421    8.00000   41.00000   412%     -   44s
     0     0          -    0         8.00000   41.00000   412%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 22
  Clique: 25
  MIR: 141
  StrongCG: 1
  GUB cover: 1
  Zero half: 60
  RLT: 66
  BQP: 4

Explored 1 nodes (28462 simplex iterations) in 50.03 seconds (57.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 7 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.100000000000e+01, gap 412.5000%

Wrote result file './lp_solutions/grafo3291.35.sol'

