
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:08:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3931.37.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/grafo3931.37.lp
Reading time = 0.16 seconds
: 98098 rows, 1909 columns, 295932 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 98098 rows, 1909 columns and 295932 nonzeros
Model fingerprint: 0xc407ca3f
Variable types: 44 continuous, 1865 integer (1865 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 32520 rows and 22 columns
Presolve time: 0.69s
Presolved: 65578 rows, 1887 columns, 198566 nonzeros
Variable types: 0 continuous, 1887 integer (1843 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 1887 rows, 67465 columns, 200453 nonzeros


Root relaxation: objective 3.800000e+01, 2892 iterations, 0.83 seconds (1.08 work units)
Total elapsed time = 7.24s (DegenMoves)

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

     0     0   38.00000    0  458    9.00000   38.00000   322%     -    8s
H    0     0                      11.0000000   38.00000   245%     -    8s
     0     0   38.00000    0  672   11.00000   38.00000   245%     -   17s
     0     0   38.00000    0  654   11.00000   38.00000   245%     -   18s
     0     0   37.98000    0  475   11.00000   37.98000   245%     -   42s
     0     0   37.98000    0  499   11.00000   37.98000   245%     -   43s
     0     0          -    0        11.00000   37.98000   245%     -   50s

Cutting planes:
  Cover: 39
  Clique: 33
  MIR: 108
  GUB cover: 1
  Zero half: 65
  RLT: 79
  BQP: 4

Explored 1 nodes (38157 simplex iterations) in 50.08 seconds (47.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 9 

Time limit reached
Best objective 1.100000000000e+01, best bound 3.700000000000e+01, gap 236.3636%

Wrote result file './lp_solutions/grafo3931.37.sol'

