
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:47:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7575.41.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/grafo7575.41.lp
Reading time = 0.19 seconds
: 102106 rows, 2542 columns, 308643 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 102106 rows, 2542 columns and 308643 nonzeros
Model fingerprint: 0xb67e4bec
Variable types: 51 continuous, 2491 integer (2491 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 26387 rows and 71 columns
Presolve time: 0.83s
Presolved: 75719 rows, 2471 columns, 230008 nonzeros
Variable types: 0 continuous, 2471 integer (2420 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2465 rows, 78184 columns, 232479 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15366    5.0941408e+01   0.000000e+00   5.156214e+04      5s
   32045    5.0911808e+01   0.000000e+00   4.050246e+04     10s
   49056    5.0902254e+01   0.000000e+00   7.357091e+03     15s
   65719    5.0898939e+01   0.000000e+00   4.621364e+02     20s
   73620    5.1000000e+01   0.000000e+00   0.000000e+00     22s
   73620    5.1000000e+01   0.000000e+00   0.000000e+00     22s
   73620    5.1000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.100000e+01, 73620 iterations, 21.40 seconds (13.73 work units)
Total elapsed time = 42.03s (DegenMoves)

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

     0     0   51.00000    0  468    5.00000   51.00000   920%     -   45s
H    0     0                       9.0000000   51.00000   467%     -   45s
H    0     0                      12.0000000   51.00000   325%     -   47s
     0     0          -    0        12.00000   51.00000   325%     -   50s

Cutting planes:
  Gomory: 43
  Cover: 53
  Clique: 5
  MIR: 140
  GUB cover: 10
  Zero half: 20
  RLT: 42
  BQP: 1

Explored 1 nodes (92485 simplex iterations) in 50.17 seconds (36.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 9 5 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.100000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo7575.41.sol'

