
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:30:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7233.37.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/grafo7233.37.lp
Reading time = 0.08 seconds
: 67657 rows, 1988 columns, 204721 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 67657 rows, 1988 columns and 204721 nonzeros
Model fingerprint: 0x66181f85
Variable types: 45 continuous, 1943 integer (1943 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 14943 rows and 29 columns
Presolve time: 0.37s
Presolved: 52714 rows, 1959 columns, 160356 nonzeros
Variable types: 0 continuous, 1959 integer (1914 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 1956 rows, 54670 columns, 162315 nonzeros


Root relaxation: objective 4.200000e+01, 1990 iterations, 0.31 seconds (0.40 work units)
Total elapsed time = 5.75s (DegenMoves)

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

     0     0   42.00000    0  442    6.00000   42.00000   600%     -    8s
H    0     0                      11.0000000   42.00000   282%     -    8s
H    0     0                      13.0000000   42.00000   223%     -    8s
     0     0   42.00000    0  716   13.00000   42.00000   223%     -   14s
     0     0   42.00000    0  707   13.00000   42.00000   223%     -   15s
H    0     0                      15.0000000   42.00000   180%     -   43s
     0     0   42.00000    0  551   15.00000   42.00000   180%     -   44s
H    0     0                      16.0000000   42.00000   162%     -   47s
H    0     0                      17.0000000   42.00000   147%     -   47s
     0     0   42.00000    0  525   17.00000   42.00000   147%     -   47s
     0     0          -    0        17.00000   42.00000   147%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 1
  Cover: 31
  Clique: 6
  MIR: 123
  GUB cover: 1
  Zero half: 58
  RLT: 66

Explored 1 nodes (56596 simplex iterations) in 50.04 seconds (58.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 17 16 15 ... 6

Time limit reached
Best objective 1.700000000000e+01, best bound 4.200000000000e+01, gap 147.0588%

Wrote result file './lp_solutions/grafo7233.37.sol'

