
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:31:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1479.48.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/grafo1479.48.lp
Reading time = 0.18 seconds
: 99663 rows, 2437 columns, 300791 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 99663 rows, 2437 columns and 300791 nonzeros
Model fingerprint: 0x250579dd
Variable types: 45 continuous, 2392 integer (2392 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 22785 rows and 26 columns
Presolve time: 0.77s
Presolved: 76878 rows, 2411 columns, 232892 nonzeros
Variable types: 0 continuous, 2411 integer (2366 binary)
Root relaxation presolved: 2411 rows, 79289 columns, 235303 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20846    3.1963313e+01   0.000000e+00   1.393983e+05      5s
   40673    3.1950199e+01   0.000000e+00   3.945099e+03     10s
   45559    3.2000000e+01   0.000000e+00   0.000000e+00     11s
   45559    3.2000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 3.200000e+01, 45559 iterations, 10.49 seconds (7.75 work units)
Total elapsed time = 20.90s (DegenMoves)
Total elapsed time = 30.58s (DegenMoves)

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

     0     0   32.00000    0  296          -   32.00000      -     -   34s
H    0     0                       8.0000000   32.00000   300%     -   38s
     0     0   32.00000    0  639    8.00000   32.00000   300%     -   43s
H    0     0                      11.0000000   32.00000   191%     -   43s
     0     0   32.00000    0  637   11.00000   32.00000   191%     -   44s
     0     0          -    0        11.00000   32.00000   191%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 27
  Cover: 10
  Clique: 21
  MIR: 60
  GUB cover: 1
  Zero half: 8
  RLT: 29
  BQP: 5

Explored 1 nodes (74176 simplex iterations) in 50.04 seconds (42.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 8 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.200000000000e+01, gap 190.9091%

Wrote result file './lp_solutions/grafo1479.48.sol'

