
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:04:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5850.43.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/grafo5850.43.lp
Reading time = 0.31 seconds
: 158580 rows, 2676 columns, 478137 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 158580 rows, 2676 columns and 478137 nonzeros
Model fingerprint: 0xd99da457
Variable types: 51 continuous, 2625 integer (2625 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 51082 rows and 23 columns
Presolve time: 1.58s
Presolved: 107498 rows, 2653 columns, 325423 nonzeros
Variable types: 0 continuous, 2653 integer (2602 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2647 rows, 110145 columns, 328076 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13427    5.2389530e+01   0.000000e+00   2.102430e+05      5s
   30786    5.1733870e+01   0.000000e+00   5.051726e+04     10s
   46711    5.1717926e+01   0.000000e+00   1.149285e+03     15s
   57321    5.2000000e+01   0.000000e+00   0.000000e+00     19s
   57321    5.2000000e+01   0.000000e+00   0.000000e+00     19s
   57321    5.2000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.200000e+01, 57321 iterations, 16.90 seconds (10.09 work units)
Total elapsed time = 34.00s (DegenMoves)
Total elapsed time = 35.39s (DegenMoves)

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

     0     0   52.00000    0  608   13.00000   52.00000   300%     -   37s
H    0     0                      15.0000000   52.00000   247%     -   37s
     0     0          -    0        15.00000   52.00000   247%     -   50s

Cutting planes:
  Gomory: 33
  Cover: 55
  Clique: 37
  MIR: 263
  GUB cover: 4
  Zero half: 69
  RLT: 94
  BQP: 8

Explored 1 nodes (74121 simplex iterations) in 50.04 seconds (38.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 15 13 

Time limit reached
Best objective 1.500000000000e+01, best bound 5.200000000000e+01, gap 246.6667%

Wrote result file './lp_solutions/grafo5850.43.sol'

