
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 03:38:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3644.44.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/grafo3644.44.lp
Reading time = 0.20 seconds
: 102136 rows, 2335 columns, 308247 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 102136 rows, 2335 columns and 308247 nonzeros
Model fingerprint: 0x695b69d0
Variable types: 45 continuous, 2290 integer (2290 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 26349 rows and 8 columns
Presolve time: 0.75s
Presolved: 75787 rows, 2327 columns, 229636 nonzeros
Variable types: 0 continuous, 2327 integer (2282 binary)
Root relaxation presolved: 2321 rows, 78108 columns, 231963 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19231    4.2894601e+01   0.000000e+00   2.557201e+04      5s
   35600    4.3000000e+01   0.000000e+00   0.000000e+00      9s
   35600    4.3000000e+01   0.000000e+00   0.000000e+00      9s
   35600    4.3000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.300000e+01, 35600 iterations, 8.42 seconds (5.19 work units)
Total elapsed time = 19.99s (DegenMoves)
Total elapsed time = 25.96s (DegenMoves)

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

     0     0   43.00000    0  438          -   43.00000      -     -   27s
H    0     0                      12.0000000   43.00000   258%     -   29s
H    0     0                      15.0000000   43.00000   187%     -   29s
     0     0   43.00000    0  728   15.00000   43.00000   187%     -   42s
H    0     0                      16.0000000   43.00000   169%     -   46s
     0     0   43.00000    0  755   16.00000   43.00000   169%     -   46s

Cutting planes:
  Gomory: 2
  Lift-and-project: 20
  Cover: 9
  Clique: 16
  MIR: 88
  StrongCG: 2
  Zero half: 127
  RLT: 35
  BQP: 3

Explored 1 nodes (60092 simplex iterations) in 50.49 seconds (36.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 16 15 12 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.300000000000e+01, gap 168.7500%

Wrote result file './lp_solutions/grafo3644.44.sol'

