
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:14:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo309.26.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/grafo309.26.lp
Reading time = 0.14 seconds
: 86014 rows, 1168 columns, 258978 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 86014 rows, 1168 columns and 258978 nonzeros
Model fingerprint: 0xa64e33ff
Variable types: 33 continuous, 1135 integer (1135 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 38227 rows and 5 columns
Presolve time: 0.55s
Presolved: 47787 rows, 1163 columns, 144443 nonzeros
Variable types: 0 continuous, 1163 integer (1130 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 1161 rows, 48948 columns, 145606 nonzeros


Root relaxation: objective 4.000000e+01, 2087 iterations, 0.72 seconds (0.93 work units)
Total elapsed time = 5.47s (DegenMoves)

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

     0     0   40.00000    0  537    4.00000   40.00000   900%     -   13s
H    0     0                       6.0000000   40.00000   567%     -   13s
H    0     0                       7.0000000   40.00000   471%     -   13s
H    0     0                       9.0000000   40.00000   344%     -   15s
     0     0   40.00000    0  680    9.00000   40.00000   344%     -   20s
     0     0   40.00000    0  667    9.00000   40.00000   344%     -   21s
     0     0   40.00000    0  592    9.00000   40.00000   344%     -   44s
     0     0   40.00000    0  515    9.00000   40.00000   344%     -   45s
     0     0   40.00000    0  605    9.00000   40.00000   344%     -   50s

Cutting planes:
  Cover: 25
  Clique: 27
  MIR: 144
  Zero half: 50
  RLT: 90
  BQP: 3

Explored 1 nodes (43904 simplex iterations) in 50.05 seconds (57.18 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 7 6 4 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo309.26.sol'

