
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:07:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6905.37.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/grafo6905.37.lp
Reading time = 0.17 seconds
: 108831 rows, 1911 columns, 328083 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 108831 rows, 1911 columns and 328083 nonzeros
Model fingerprint: 0x37d9fceb
Variable types: 42 continuous, 1869 integer (1869 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 38626 rows and 18 columns
Presolve time: 0.74s
Presolved: 70205 rows, 1893 columns, 212598 nonzeros
Variable types: 0 continuous, 1893 integer (1851 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1893 rows, 72098 columns, 214491 nonzeros


Root relaxation: objective 4.000000e+01, 2870 iterations, 0.73 seconds (0.84 work units)
Total elapsed time = 8.93s (DegenMoves)

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

     0     0   40.00000    0  445    7.00000   40.00000   471%     -    9s
H    0     0                      10.0000000   40.00000   300%     -    9s
H    0     0                      12.0000000   40.00000   233%     -   10s
     0     0   40.00000    0  648   12.00000   40.00000   233%     -   19s
     0     0   40.00000    0  663   12.00000   40.00000   233%     -   20s
     0     0   40.00000    0  495   12.00000   40.00000   233%     -   46s
     0     0   40.00000    0  452   12.00000   40.00000   233%     -   47s
     0     0          -    0        12.00000   40.00000   233%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 33
  Clique: 21
  MIR: 110
  StrongCG: 1
  GUB cover: 2
  Zero half: 54
  RLT: 58
  BQP: 1

Explored 1 nodes (35206 simplex iterations) in 50.09 seconds (47.82 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 4.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo6905.37.sol'

