
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:15:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6158.42.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/grafo6158.42.lp
Reading time = 0.19 seconds
: 116721 rows, 1957 columns, 351485 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 116721 rows, 1957 columns and 351485 nonzeros
Model fingerprint: 0x28b95c9b
Variable types: 39 continuous, 1918 integer (1918 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 41313 rows and 15 columns
Presolve time: 0.79s
Presolved: 75408 rows, 1942 columns, 227937 nonzeros
Variable types: 0 continuous, 1942 integer (1903 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1936 rows, 77344 columns, 229879 nonzeros


Root relaxation: objective 4.200000e+01, 2488 iterations, 0.87 seconds (1.05 work units)
Total elapsed time = 8.56s (DegenMoves)

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

     0     0   42.00000    0  526    4.00000   42.00000   950%     -    9s
H    0     0                       6.0000000   42.00000   600%     -    9s
H    0     0                       7.0000000   42.00000   500%     -   18s
H    0     0                       8.0000000   42.00000   425%     -   18s
     0     0   42.00000    0  690    8.00000   42.00000   425%     -   18s
H    0     0                       9.0000000   42.00000   367%     -   19s
     0     0   42.00000    0  650    9.00000   42.00000   367%     -   20s
     0     0   42.00000    0  591    9.00000   42.00000   367%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 44
  Cover: 26
  Clique: 10
  MIR: 134
  Zero half: 52
  RLT: 77
  BQP: 5

Explored 1 nodes (37197 simplex iterations) in 50.09 seconds (54.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... 4

Time limit reached
Best objective 9.000000000000e+00, best bound 4.200000000000e+01, gap 366.6667%

Wrote result file './lp_solutions/grafo6158.42.sol'

