
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:27:09 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6541.39.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/grafo6541.39.lp
Reading time = 0.19 seconds
: 118711 rows, 2511 columns, 358571 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 118711 rows, 2511 columns and 358571 nonzeros
Model fingerprint: 0xd417eb14
Variable types: 52 continuous, 2459 integer (2459 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 34088 rows and 46 columns
Presolve time: 0.80s
Presolved: 84623 rows, 2465 columns, 256702 nonzeros
Variable types: 0 continuous, 2465 integer (2413 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2462 rows, 87085 columns, 259167 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20327    5.4802799e+01   0.000000e+00   7.294960e+04      5s
   43141    5.4761111e+01   0.000000e+00   6.364779e+03     10s
   55577    5.5000000e+01   0.000000e+00   0.000000e+00     13s
   55577    5.5000000e+01   0.000000e+00   0.000000e+00     13s
   55577    5.5000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 5.500000e+01, 55577 iterations, 11.97 seconds (9.25 work units)
Total elapsed time = 26.07s (DegenMoves)

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

     0     0   55.00000    0  585    8.00000   55.00000   587%     -   28s
H    0     0                      10.0000000   55.00000   450%     -   28s
     0     0   55.00000    0 1113   10.00000   55.00000   450%     -   48s
     0     0   55.00000    0 1068   10.00000   55.00000   450%     -   49s

Cutting planes:
  Gomory: 3
  Cover: 9
  Clique: 15
  MIR: 204
  Zero half: 1
  RLT: 25

Explored 1 nodes (81598 simplex iterations) in 50.03 seconds (49.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 8 

Time limit reached
Best objective 1.000000000000e+01, best bound 5.500000000000e+01, gap 450.0000%

Wrote result file './lp_solutions/grafo6541.39.sol'

