
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 02:54:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3915.38.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/grafo3915.38.lp
Reading time = 0.16 seconds
: 97441 rows, 1602 columns, 293375 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 97441 rows, 1602 columns and 293375 nonzeros
Model fingerprint: 0x67144562
Variable types: 35 continuous, 1567 integer (1567 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 37222 rows and 6 columns
Presolve time: 0.60s
Presolved: 60219 rows, 1596 columns, 181896 nonzeros
Variable types: 0 continuous, 1596 integer (1561 binary)
Root relaxation presolved: 1594 rows, 61813 columns, 183492 nonzeros


Root relaxation: objective 4.000000e+01, 2529 iterations, 0.79 seconds (1.00 work units)
Total elapsed time = 5.72s (DegenMoves)

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

     0     0   40.00000    0  331          -   40.00000      -     -    7s
H    0     0                       7.0000000   40.00000   471%     -    7s
H    0     0                       8.0000000   40.00000   400%     -    8s
     0     0   40.00000    0  561    8.00000   40.00000   400%     -   12s
     0     0   40.00000    0  520    8.00000   40.00000   400%     -   13s
     0     0   40.00000    0  611    8.00000   40.00000   400%     -   29s
     0     0   40.00000    0  626    8.00000   40.00000   400%     -   30s
H    0     0                       9.0000000   40.00000   344%     -   44s
     0     0   40.00000    0  400    9.00000   40.00000   344%     -   44s
     0     0   40.00000    0  375    9.00000   40.00000   344%     -   45s
     0     0   40.00000    0  512    9.00000   40.00000   344%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 17
  Clique: 11
  MIR: 134
  StrongCG: 1
  Zero half: 33
  RLT: 61
  BQP: 2

Explored 1 nodes (44483 simplex iterations) in 50.08 seconds (52.09 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 8 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 4.000000000000e+01, gap 344.4444%

Wrote result file './lp_solutions/grafo3915.38.sol'

