
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:36:05 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3008.32.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/grafo3008.32.lp
Reading time = 0.43 seconds
: 265023 rows, 1939 columns, 796876 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 265023 rows, 1939 columns and 796876 nonzeros
Model fingerprint: 0x6f1720aa
Variable types: 44 continuous, 1895 integer (1895 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]
Found heuristic solution: objective 2.0000000
Presolve removed 124186 rows and 13 columns
Presolve time: 1.96s
Presolved: 140837 rows, 1926 columns, 424588 nonzeros
Variable types: 0 continuous, 1926 integer (1882 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 1920 rows, 142757 columns, 426514 nonzeros


Root relaxation: objective 5.500000e+01, 2313 iterations, 1.42 seconds (1.66 work units)
Total elapsed time = 16.11s (DegenMoves)

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

     0     0   55.00000    0  617   12.00000   55.00000   358%     -   18s
H    0     0                      13.0000000   55.00000   323%     -   18s
     0     0   55.00000    0  891   13.00000   55.00000   323%     -   42s
H    0     0                      14.0000000   55.00000   293%     -   43s
     0     0   55.00000    0  941   14.00000   55.00000   293%     -   44s
     0     0          -    0        14.00000   55.00000   293%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 22
  Clique: 79
  MIR: 106
  StrongCG: 3
  GUB cover: 2
  Zero half: 55
  RLT: 95
  BQP: 10

Explored 1 nodes (18953 simplex iterations) in 50.04 seconds (54.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 13 12 2 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.500000000000e+01, gap 292.8571%

Wrote result file './lp_solutions/grafo3008.32.sol'

