
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:39:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1531.47.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/grafo1531.47.lp
Reading time = 0.15 seconds
: 73794 rows, 2391 columns, 223135 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 73794 rows, 2391 columns and 223135 nonzeros
Model fingerprint: 0x41b8a81c
Variable types: 45 continuous, 2346 integer (2346 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 8465 rows and 30 columns
Presolve time: 0.85s
Presolved: 65329 rows, 2361 columns, 198250 nonzeros
Variable types: 0 continuous, 2361 integer (2316 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2355 rows, 67684 columns, 200611 nonzeros


Root relaxation: objective 3.900000e+01, 15612 iterations, 3.72 seconds (2.00 work units)
Total elapsed time = 9.81s (DegenMoves)
Total elapsed time = 10.31s (DegenMoves)

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

     0     0   39.00000    0  279    9.00000   39.00000   333%     -   10s
H    0     0                      11.0000000   39.00000   255%     -   10s
     0     0   39.00000    0  563   11.00000   39.00000   255%     -   19s
     0     0   39.00000    0  546   11.00000   39.00000   255%     -   22s
H    0     0                      12.0000000   39.00000   225%     -   25s
H    0     0                      13.0000000   39.00000   200%     -   37s
     0     0   39.00000    0  412   13.00000   39.00000   200%     -   37s
     0     0   39.00000    0  385   13.00000   39.00000   200%     -   38s
H    0     0                      14.0000000   39.00000   179%     -   39s
H    0     0                      15.0000000   39.00000   160%     -   46s
     0     0   39.00000    0  283   15.00000   39.00000   160%     -   46s
     0     0   39.00000    0  441   15.00000   39.00000   160%     -   47s
     0     0          -    0        15.00000   39.00000   160%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 22
  MIR: 108
  StrongCG: 3
  GUB cover: 11
  Inf proof: 1
  Zero half: 39
  RLT: 55

Explored 1 nodes (43999 simplex iterations) in 50.10 seconds (23.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 15 14 13 ... 9

Time limit reached
Best objective 1.500000000000e+01, best bound 3.900000000000e+01, gap 160.0000%

Wrote result file './lp_solutions/grafo1531.47.sol'

