
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 20:51:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11578.37.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/grafo11578.37.lp
Reading time = 0.15 seconds
: 89262 rows, 2028 columns, 269603 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 89262 rows, 2028 columns and 269603 nonzeros
Model fingerprint: 0xe51b4b32
Variable types: 46 continuous, 1982 integer (1982 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 24321 rows and 28 columns
Presolve time: 0.65s
Presolved: 64941 rows, 2000 columns, 197027 nonzeros
Variable types: 0 continuous, 2000 integer (1954 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2000 rows, 66941 columns, 199027 nonzeros


Root relaxation: objective 4.000000e+01, 1798 iterations, 0.39 seconds (0.39 work units)

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

     0     0   40.00000    0  415   10.00000   40.00000   300%     -    5s
H    0     0                      12.0000000   40.00000   233%     -    6s
H    0     0                      13.0000000   40.00000   208%     -   12s
H    0     0                      14.0000000   40.00000   186%     -   12s
     0     0   39.00000    0  651   14.00000   39.00000   179%     -   12s
     0     0   39.00000    0  619   14.00000   39.00000   179%     -   14s
H    0     0                      15.0000000   39.00000   160%     -   42s
H    0     0                      16.0000000   39.00000   144%     -   42s
H    0     0                      17.0000000   39.00000   129%     -   42s
     0     0   39.00000    0  503   17.00000   39.00000   129%     -   42s
     0     0   39.00000    0  479   17.00000   39.00000   129%     -   42s
     0     0   39.00000    0  612   17.00000   39.00000   129%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 2
  Cover: 19
  Clique: 13
  MIR: 133
  StrongCG: 2
  GUB cover: 4
  Zero half: 56
  RLT: 61

Explored 1 nodes (41995 simplex iterations) in 50.07 seconds (46.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 17 16 15 ... 10

Time limit reached
Best objective 1.700000000000e+01, best bound 3.900000000000e+01, gap 129.4118%

Wrote result file './lp_solutions/grafo11578.37.sol'

