
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:13:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1616.30.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/grafo1616.30.lp
Reading time = 0.11 seconds
: 50754 rows, 1177 columns, 153049 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 50754 rows, 1177 columns and 153049 nonzeros
Model fingerprint: 0x71831d51
Variable types: 31 continuous, 1146 integer (1146 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 1.0000000
Presolve removed 18983 rows and 9 columns
Presolve time: 0.56s
Presolved: 31771 rows, 1168 columns, 96430 nonzeros
Variable types: 0 continuous, 1168 integer (1137 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 23216 rows, 9723 columns, 79320 nonzeros


Root relaxation: objective 3.000000e+01, 2177 iterations, 1.78 seconds (0.94 work units)
Total elapsed time = 5.48s (DegenMoves)

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

     0     0   30.00000    0  345    7.00000   30.00000   329%     -    6s
     0     0   30.00000    0  509    7.00000   30.00000   329%     -   12s
     0     0   30.00000    0  475    7.00000   30.00000   329%     -   12s
     0     0   30.00000    0  308    7.00000   30.00000   329%     -   17s
     0     0   30.00000    0  306    7.00000   30.00000   329%     -   17s
     0     0   30.00000    0  284    7.00000   30.00000   329%     -   25s
     0     0   30.00000    0  240    7.00000   30.00000   329%     -   25s
H    0     0                       9.0000000   30.00000   233%     -   35s
     0     0   30.00000    0  365    9.00000   30.00000   233%     -   35s
     0     0   30.00000    0  324    9.00000   30.00000   233%     -   36s
     0     0   30.00000    0  295    9.00000   30.00000   233%     -   40s
     0     0   30.00000    0  307    9.00000   30.00000   233%     -   41s
     0     0   30.00000    0  387    9.00000   30.00000   233%     -   45s
     0     0   30.00000    0  401    9.00000   30.00000   233%     -   45s
     0     0   30.00000    0  390    9.00000   30.00000   233%     -   50s

Cutting planes:
  Cover: 13
  Clique: 17
  MIR: 82
  Zero half: 27
  RLT: 48
  Relax-and-lift: 1

Explored 1 nodes (62589 simplex iterations) in 50.04 seconds (41.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.000000000000e+01, gap 233.3333%

Wrote result file './lp_solutions/grafo1616.30.sol'

