
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:41:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2436.28.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/grafo2436.28.lp
Reading time = 0.14 seconds
: 85881 rows, 1284 columns, 258691 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 85881 rows, 1284 columns and 258691 nonzeros
Model fingerprint: 0x2995e8f6
Variable types: 35 continuous, 1249 integer (1249 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 36041 rows and 12 columns
Presolve time: 0.61s
Presolved: 49840 rows, 1272 columns, 150736 nonzeros
Variable types: 0 continuous, 1272 integer (1237 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 1272 rows, 51112 columns, 152008 nonzeros


Root relaxation: objective 3.800000e+01, 2384 iterations, 0.83 seconds (1.13 work units)
Total elapsed time = 5.04s (DegenMoves)

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

     0     0   38.00000    0  388    5.00000   38.00000   660%     -    5s
H    0     0                       8.0000000   38.00000   375%     -    5s
     0     0   38.00000    0  636    8.00000   38.00000   375%     -   14s
     0     0   38.00000    0  600    8.00000   38.00000   375%     -   15s
H    0     0                       9.0000000   38.00000   322%     -   30s
     0     0   38.00000    0  511    9.00000   38.00000   322%     -   30s
     0     0   38.00000    0  477    9.00000   38.00000   322%     -   31s
     0     0   38.00000    0  587    9.00000   38.00000   322%     -   43s
     0     0   38.00000    0  596    9.00000   38.00000   322%     -   44s
     0     0   38.00000    0  582    9.00000   38.00000   322%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 1
  Clique: 9
  MIR: 73
  Zero half: 74
  RLT: 63
  BQP: 1

Explored 1 nodes (41585 simplex iterations) in 50.07 seconds (46.13 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 8 5 2 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.800000000000e+01, gap 322.2222%

Wrote result file './lp_solutions/grafo2436.28.sol'

