
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:55:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3161.39.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/grafo3161.39.lp
Reading time = 0.16 seconds
: 96532 rows, 1940 columns, 291110 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 96532 rows, 1940 columns and 291110 nonzeros
Model fingerprint: 0x6b4da35e
Variable types: 41 continuous, 1899 integer (1899 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 32311 rows and 2 columns
Presolve time: 0.60s
Presolved: 64221 rows, 1938 columns, 194503 nonzeros
Variable types: 0 continuous, 1938 integer (1897 binary)
Root relaxation presolved: 1936 rows, 66157 columns, 196441 nonzeros


Root relaxation: objective 4.400000e+01, 2002 iterations, 0.45 seconds (0.42 work units)
Total elapsed time = 5.22s (DegenMoves)

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

     0     0   44.00000    0  372          -   44.00000      -     -    6s
H    0     0                      10.0000000   44.00000   340%     -    6s
H    0     0                      11.0000000   44.00000   300%     -   17s
     0     0   43.00000    0  753   11.00000   43.00000   291%     -   17s
     0     0   43.00000    0  687   11.00000   43.00000   291%     -   18s
     0     0   43.00000    0  626   11.00000   43.00000   291%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 37
  Cover: 14
  Clique: 20
  MIR: 149
  StrongCG: 1
  Zero half: 22
  RLT: 51

Explored 1 nodes (40349 simplex iterations) in 50.08 seconds (51.46 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 10 

Time limit reached
Best objective 1.100000000000e+01, best bound 4.300000000000e+01, gap 290.9091%

Wrote result file './lp_solutions/grafo3161.39.sol'

