
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:36:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7600.40.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/grafo7600.40.lp
Reading time = 0.14 seconds
: 86956 rows, 2458 columns, 263152 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 86956 rows, 2458 columns and 263152 nonzeros
Model fingerprint: 0x285e38df
Variable types: 52 continuous, 2406 integer (2406 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 13719 rows and 0 columns
Presolve time: 0.48s
Presolved: 73237 rows, 2458 columns, 222469 nonzeros
Variable types: 0 continuous, 2458 integer (2406 binary)
Root relaxation presolved: 2413 rows, 75650 columns, 224927 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19889    4.9930419e+01   0.000000e+00   8.067274e+04      5s
   40088    4.9909386e+01   0.000000e+00   1.874268e+04     10s
   60342    4.9900543e+01   0.000000e+00   8.294642e+02     15s
   80936    5.0000000e+01   0.000000e+00   0.000000e+00     20s
   80936    5.0000000e+01   0.000000e+00   0.000000e+00     20s
   80936    5.0000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 5.000000e+01, 80936 iterations, 19.41 seconds (17.80 work units)
Total elapsed time = 35.92s (DegenMoves)
Total elapsed time = 40.69s (DegenMoves)

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

     0     0   50.00000    0  581          -   50.00000      -     -   45s
H    0     0                       5.0000000   50.00000   900%     -   46s
H    0     0                       9.0000000   50.00000   456%     -   46s
H    0     0                      11.0000000   50.00000   355%     -   46s
     0     0          -    0        11.00000   50.00000   355%     -   50s

Cutting planes:
  Gomory: 31
  Cover: 37
  Clique: 3
  MIR: 147
  Zero half: 95
  RLT: 63

Explored 1 nodes (105578 simplex iterations) in 50.08 seconds (53.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 11 9 5 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.000000000000e+01, gap 354.5455%

Wrote result file './lp_solutions/grafo7600.40.sol'

