
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:45:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3690.38.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/grafo3690.38.lp
Reading time = 0.34 seconds
: 206967 rows, 2149 columns, 622826 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 206967 rows, 2149 columns and 622826 nonzeros
Model fingerprint: 0x715f3d5f
Variable types: 46 continuous, 2103 integer (2103 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 85954 rows and 28 columns
Presolve time: 1.57s
Presolved: 121013 rows, 2121 columns, 365344 nonzeros
Variable types: 0 continuous, 2121 integer (2075 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2115 rows, 123128 columns, 367465 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18915    4.3948533e+01   0.000000e+00   8.581094e+05      5s
   44096    3.6825601e+01   0.000000e+00   2.670770e+04     10s
   70240    3.6805938e+01   0.000000e+00   1.465740e+03     15s
   74221    3.7000000e+01   0.000000e+00   0.000000e+00     16s
   74221    3.7000000e+01   0.000000e+00   0.000000e+00     16s
   74221    3.7000000e+01   0.000000e+00   0.000000e+00     16s

Root relaxation: objective 3.700000e+01, 74221 iterations, 14.13 seconds (10.59 work units)
Total elapsed time = 26.01s (DegenMoves)

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

     0     0   37.00000    0  438    6.00000   37.00000   517%     -   30s
H    0     0                      10.0000000   37.00000   270%     -   30s
     0     0   37.00000    0  585   10.00000   37.00000   270%     -   41s
     0     0   37.00000    0  629   10.00000   37.00000   270%     -   43s
     0     0          -    0        10.00000   37.00000   270%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 49
  Cover: 17
  Clique: 21
  MIR: 65
  Zero half: 46
  RLT: 47
  BQP: 2

Explored 1 nodes (91896 simplex iterations) in 50.04 seconds (49.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 6 

Time limit reached
Best objective 1.000000000000e+01, best bound 3.700000000000e+01, gap 270.0000%

Wrote result file './lp_solutions/grafo3690.38.sol'

