
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 09:03:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6885.44.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/grafo6885.44.lp
Reading time = 0.16 seconds
: 101119 rows, 2575 columns, 305574 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 101119 rows, 2575 columns and 305574 nonzeros
Model fingerprint: 0x24cbfc0c
Variable types: 51 continuous, 2524 integer (2524 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 1.0000000
Presolve removed 18975 rows and 1 columns
Presolve time: 0.58s
Presolved: 82144 rows, 2574 columns, 248965 nonzeros
Variable types: 0 continuous, 2574 integer (2523 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2544 rows, 84688 columns, 251539 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23343    5.2946506e+01   0.000000e+00   5.142985e+03      5s
   41960    5.3000000e+01   0.000000e+00   0.000000e+00      9s
   41960    5.3000000e+01   0.000000e+00   0.000000e+00      9s
   41960    5.3000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 5.300000e+01, 41960 iterations, 8.53 seconds (6.65 work units)
Total elapsed time = 26.41s (DegenMoves)
Total elapsed time = 30.15s (DegenMoves)

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

     0     0   53.00000    0  792   12.00000   53.00000   342%     -   31s
H    0     0                      13.0000000   53.00000   308%     -   31s
     0     0   53.00000    0  982   13.00000   53.00000   308%     -   47s
     0     0   53.00000    0  925   13.00000   53.00000   308%     -   49s

Cutting planes:
  Gomory: 2
  Cover: 35
  Clique: 7
  MIR: 78
  Zero half: 2
  RLT: 42
  BQP: 1

Explored 1 nodes (72967 simplex iterations) in 50.05 seconds (49.49 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 12 1 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.300000000000e+01, gap 307.6923%

Wrote result file './lp_solutions/grafo6885.44.sol'

