
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:25:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7428.43.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/grafo7428.43.lp
Reading time = 0.17 seconds
: 93995 rows, 1869 columns, 283160 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 93995 rows, 1869 columns and 283160 nonzeros
Model fingerprint: 0xf6c708c7
Variable types: 37 continuous, 1832 integer (1832 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 5.0000000
Presolve removed 32667 rows and 20 columns
Presolve time: 0.64s
Presolved: 61328 rows, 1849 columns, 185449 nonzeros
Variable types: 0 continuous, 1849 integer (1812 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 1849 rows, 63177 columns, 187298 nonzeros


Root relaxation: objective 3.800000e+01, 1696 iterations, 0.36 seconds (0.35 work units)

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

     0     0   38.00000    0  316   11.00000   38.00000   245%     -    4s
H    0     0                      14.0000000   38.00000   171%     -    5s
     0     0   38.00000    0  747   14.00000   38.00000   171%     -   11s
     0     0   38.00000    0  679   14.00000   38.00000   171%     -   12s
H    0     0                      16.0000000   38.00000   137%     -   32s
     0     0   38.00000    0  390   16.00000   38.00000   137%     -   32s
     0     0   38.00000    0  321   16.00000   38.00000   137%     -   32s
     0     0   38.00000    0  597   16.00000   38.00000   137%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 16
  Clique: 11
  MIR: 94
  StrongCG: 2
  Zero half: 39
  RLT: 40
  BQP: 1

Explored 1 nodes (45654 simplex iterations) in 50.11 seconds (50.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 14 11 5 

Time limit reached
Best objective 1.600000000000e+01, best bound 3.800000000000e+01, gap 137.5000%

Wrote result file './lp_solutions/grafo7428.43.sol'

