
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:57:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6088.41.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/grafo6088.41.lp
Reading time = 0.08 seconds
: 48341 rows, 1701 columns, 146073 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 48341 rows, 1701 columns and 146073 nonzeros
Model fingerprint: 0xebe5e28c
Variable types: 37 continuous, 1664 integer (1664 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 -0.0000000
Presolve removed 6990 rows and 33 columns
Presolve time: 0.31s
Presolved: 41351 rows, 1668 columns, 125434 nonzeros
Variable types: 0 continuous, 1668 integer (1631 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 22921 rows, 20098 columns, 88574 nonzeros


Root relaxation: objective 3.200000e+01, 3839 iterations, 1.66 seconds (1.54 work units)
Total elapsed time = 5.32s (DegenMoves)

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

     0     0   32.00000    0  398    6.00000   32.00000   433%     -    5s
H    0     0                       7.0000000   32.00000   357%     -    5s
H    0     0                       9.0000000   32.00000   256%     -    6s
     0     0   32.00000    0  629    9.00000   32.00000   256%     -   10s
     0     0   32.00000    0  615    9.00000   32.00000   256%     -   10s
H    0     0                      10.0000000   32.00000   220%     -   19s
     0     0   32.00000    0  396   10.00000   32.00000   220%     -   19s
     0     0   32.00000    0  397   10.00000   32.00000   220%     -   20s
H    0     0                      11.0000000   32.00000   191%     -   38s
H    0     0                      12.0000000   32.00000   167%     -   39s
     0     0   32.00000    0  365   12.00000   32.00000   167%     -   39s
     0     0   32.00000    0  391   12.00000   32.00000   167%     -   40s
H    0     0                      13.0000000   32.00000   146%     -   46s
     0     0   32.00000    0  406   13.00000   32.00000   146%     -   46s
     0     0   32.00000    0  381   13.00000   32.00000   146%     -   47s
     0     0          -    0        13.00000   32.00000   146%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 17
  Clique: 5
  MIR: 97
  StrongCG: 2
  GUB cover: 9
  Zero half: 39
  RLT: 47

Explored 1 nodes (69011 simplex iterations) in 50.05 seconds (48.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 13 12 11 ... -0

Time limit reached
Best objective 1.300000000000e+01, best bound 3.200000000000e+01, gap 146.1538%

Wrote result file './lp_solutions/grafo6088.41.sol'

