
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 02:57:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1400.31.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/grafo1400.31.lp
Reading time = 0.34 seconds
: 210801 rows, 1707 columns, 633922 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 210801 rows, 1707 columns and 633922 nonzeros
Model fingerprint: 0xf715ac38
Variable types: 41 continuous, 1666 integer (1666 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 105909 rows and 7 columns
Presolve time: 1.43s
Presolved: 104892 rows, 1700 columns, 316518 nonzeros
Variable types: 0 continuous, 1700 integer (1659 binary)
Root relaxation presolved: 1688 rows, 106580 columns, 318218 nonzeros


Root relaxation: objective 5.100000e+01, 2315 iterations, 1.26 seconds (1.42 work units)
Total elapsed time = 10.59s (DegenMoves)
Total elapsed time = 15.22s (DegenMoves)

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

     0     0   51.00000    0  488          -   51.00000      -     -   17s
H    0     0                       3.0000000   51.00000  1600%     -   19s
     0     0   51.00000    0  777    3.00000   51.00000  1600%     -   31s
H    0     0                      10.0000000   51.00000   410%     -   32s
H    0     0                      12.0000000   51.00000   325%     -   32s
     0     0   51.00000    0  701   12.00000   51.00000   325%     -   32s
     0     0   51.00000    0  858   12.00000   51.00000   325%     -   50s

Cutting planes:
  Gomory: 3
  Lift-and-project: 39
  Cover: 21
  Clique: 32
  MIR: 127
  StrongCG: 1
  GUB cover: 1
  Zero half: 10
  RLT: 75
  BQP: 5

Explored 1 nodes (24344 simplex iterations) in 50.04 seconds (60.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 12 10 3 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.100000000000e+01, gap 325.0000%

Wrote result file './lp_solutions/grafo1400.31.sol'

