
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:24:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6284.40.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/grafo6284.40.lp
Reading time = 0.15 seconds
: 90606 rows, 2454 columns, 274100 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 90606 rows, 2454 columns and 274100 nonzeros
Model fingerprint: 0xc82ec897
Variable types: 52 continuous, 2402 integer (2402 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 15960 rows and 32 columns
Presolve time: 0.63s
Presolved: 74646 rows, 2422 columns, 226686 nonzeros
Variable types: 0 continuous, 2422 integer (2370 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2419 rows, 77065 columns, 229108 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21701    5.3976331e+01   0.000000e+00   1.523993e+05      5s
   42028    5.3962274e+01   0.000000e+00   3.039507e+04     10s
   61383    5.3954777e+01   0.000000e+00   1.808804e+04     15s
   81411    5.3951232e+01   0.000000e+00   8.588954e+02     20s
   89652    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   89652    5.4000000e+01   0.000000e+00   0.000000e+00     22s
   89652    5.4000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.400000e+01, 89652 iterations, 21.27 seconds (18.32 work units)
Total elapsed time = 38.79s (DegenMoves)
Total elapsed time = 41.17s (DegenMoves)

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

     0     0   54.00000    0  619    7.00000   54.00000   671%     -   41s
H    0     0                      10.0000000   54.00000   440%     -   41s
H    0     0                      12.0000000   54.00000   350%     -   42s
     0     0          -    0        12.00000   54.00000   350%     -   50s

Cutting planes:
  Gomory: 36
  Cover: 35
  Clique: 1
  MIR: 146
  GUB cover: 6
  Zero half: 43
  RLT: 53

Explored 1 nodes (110545 simplex iterations) in 50.09 seconds (45.70 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 7 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.400000000000e+01, gap 350.0000%

Wrote result file './lp_solutions/grafo6284.40.sol'

