
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:48:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7537.41.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/grafo7537.41.lp
Reading time = 0.17 seconds
: 107691 rows, 2509 columns, 325418 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 107691 rows, 2509 columns and 325418 nonzeros
Model fingerprint: 0x0620140e
Variable types: 52 continuous, 2457 integer (2457 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 3.0000000
Presolve removed 24076 rows and 21 columns
Presolve time: 0.67s
Presolved: 83615 rows, 2488 columns, 253642 nonzeros
Variable types: 0 continuous, 2488 integer (2436 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2485 rows, 86100 columns, 256130 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21415    4.5733875e+01   0.000000e+00   4.430710e+04      5s
   43856    4.5697909e+01   0.000000e+00   2.153656e+02     10s
   46252    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   46252    4.6000000e+01   0.000000e+00   0.000000e+00     11s
   46252    4.6000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 4.600000e+01, 46252 iterations, 9.80 seconds (7.74 work units)
Total elapsed time = 23.38s (DegenMoves)
Total elapsed time = 26.92s (DegenMoves)

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

     0     0   46.00000    0  617   11.00000   46.00000   318%     -   28s
H    0     0                      12.0000000   46.00000   283%     -   28s
H    0     0                      14.0000000   46.00000   229%     -   28s
     0     0          -    0        14.00000   46.00000   229%     -   50s

Cutting planes:
  Gomory: 35
  Cover: 28
  Clique: 18
  MIR: 164
  StrongCG: 1
  GUB cover: 3
  Zero half: 70
  RLT: 46
  BQP: 1

Explored 1 nodes (74358 simplex iterations) in 50.01 seconds (49.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 12 11 3 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.600000000000e+01, gap 228.5714%

Wrote result file './lp_solutions/grafo7537.41.sol'

