
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 03:30:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1877.33.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/grafo1877.33.lp
Reading time = 0.18 seconds
: 108993 rows, 2008 columns, 328890 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 108993 rows, 2008 columns and 328890 nonzeros
Model fingerprint: 0x3f5ac15e
Variable types: 47 continuous, 1961 integer (1961 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 1.0000000
Presolve removed 36324 rows and 24 columns
Presolve time: 0.87s
Presolved: 72669 rows, 1984 columns, 220339 nonzeros
Variable types: 0 continuous, 1984 integer (1937 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1984 rows, 74653 columns, 222323 nonzeros


Root relaxation: objective 4.900000e+01, 2622 iterations, 0.92 seconds (1.10 work units)
Total elapsed time = 7.13s (DegenMoves)

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

     0     0   49.00000    0  427    6.00000   49.00000   717%     -    9s
H    0     0                       9.0000000   49.00000   444%     -    9s
H    0     0                      10.0000000   49.00000   390%     -    9s
     0     0   49.00000    0  808   10.00000   49.00000   390%     -   23s
H    0     0                      12.0000000   49.00000   308%     -   23s
     0     0   49.00000    0  753   12.00000   49.00000   308%     -   23s
     0     0   49.00000    0  793   12.00000   49.00000   308%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 24
  Cover: 23
  Clique: 13
  MIR: 142
  StrongCG: 1
  Zero half: 15
  RLT: 82
  BQP: 1

Explored 1 nodes (35540 simplex iterations) in 50.13 seconds (45.26 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 10 9 ... 1

Time limit reached
Best objective 1.200000000000e+01, best bound 4.900000000000e+01, gap 308.3333%

Wrote result file './lp_solutions/grafo1877.33.sol'

