
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 04:31:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3720.35.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/grafo3720.35.lp
Reading time = 0.37 seconds
: 229468 rows, 1865 columns, 690011 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 229468 rows, 1865 columns and 690011 nonzeros
Model fingerprint: 0xcad9228d
Variable types: 42 continuous, 1823 integer (1823 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 103506 rows and 15 columns
Presolve time: 1.86s
Presolved: 125962 rows, 1850 columns, 379758 nonzeros
Variable types: 0 continuous, 1850 integer (1808 binary)
Root relaxation presolved: 1847 rows, 127809 columns, 381608 nonzeros


Root relaxation: objective 4.300000e+01, 2867 iterations, 1.65 seconds (2.12 work units)
Total elapsed time = 15.86s (DegenMoves)
Total elapsed time = 20.04s (DegenMoves)

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

     0     0   43.00000    0  436          -   43.00000      -     -   21s
H    0     0                       7.0000000   43.00000   514%     -   22s
     0     0   43.00000    0  606    7.00000   43.00000   514%     -   32s
H    0     0                       8.0000000   43.00000   437%     -   33s
     0     0   43.00000    0  573    8.00000   43.00000   437%     -   33s
     0     0   43.00000    0  845    8.00000   43.00000   437%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 33
  Cover: 11
  Clique: 15
  MIR: 110
  GUB cover: 1
  Zero half: 48
  RLT: 49
  BQP: 1

Explored 1 nodes (23318 simplex iterations) in 50.04 seconds (56.64 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 4.300000000000e+01, gap 437.5000%

Wrote result file './lp_solutions/grafo3720.35.sol'

