
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:49:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1627.30.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/grafo1627.30.lp
Reading time = 0.35 seconds
: 218394 rows, 1558 columns, 656554 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 218394 rows, 1558 columns and 656554 nonzeros
Model fingerprint: 0x676c275a
Variable types: 37 continuous, 1521 integer (1521 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 104105 rows and 6 columns
Presolve time: 1.44s
Presolved: 114289 rows, 1552 columns, 344551 nonzeros
Variable types: 0 continuous, 1552 integer (1515 binary)
Root relaxation presolved: 1549 rows, 115838 columns, 346103 nonzeros


Root relaxation: objective 3.700000e+01, 2203 iterations, 1.59 seconds (2.09 work units)
Total elapsed time = 14.07s (DegenMoves)
Total elapsed time = 15.52s (DegenMoves)

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

     0     0   37.00000    0  405          -   37.00000      -     -   18s
H    0     0                       6.0000000   37.00000   517%     -   18s
H    0     0                      10.0000000   37.00000   270%     -   18s
     0     0   37.00000    0  628   10.00000   37.00000   270%     -   30s
H    0     0                      12.0000000   37.00000   208%     -   31s
     0     0   37.00000    0  627   12.00000   37.00000   208%     -   31s
     0     0   37.00000    0  628   12.00000   37.00000   208%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 32
  Cover: 17
  Clique: 30
  MIR: 88
  Zero half: 42
  RLT: 55
  BQP: 6

Explored 1 nodes (25022 simplex iterations) in 50.04 seconds (56.74 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 6 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.700000000000e+01, gap 208.3333%

Wrote result file './lp_solutions/grafo1627.30.sol'

