
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 19:48:55 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3996.35.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/grafo3996.35.lp
Reading time = 0.23 seconds
: 144240 rows, 1893 columns, 434322 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 144240 rows, 1893 columns and 434322 nonzeros
Model fingerprint: 0x18f2ad24
Variable types: 43 continuous, 1850 integer (1850 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 58632 rows and 18 columns
Presolve time: 1.07s
Presolved: 85608 rows, 1875 columns, 258769 nonzeros
Variable types: 0 continuous, 1875 integer (1832 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1872 rows, 87480 columns, 260644 nonzeros


Root relaxation: objective 5.000000e+01, 3107 iterations, 1.61 seconds (2.20 work units)
Total elapsed time = 12.72s (DegenMoves)

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

     0     0   50.00000    0  631    7.00000   50.00000   614%     -   14s
H    0     0                      10.0000000   50.00000   400%     -   14s
     0     0   50.00000    0  854   10.00000   50.00000   400%     -   29s
H    0     0                      12.0000000   50.00000   317%     -   30s
     0     0   50.00000    0  841   12.00000   50.00000   317%     -   32s
     0     0   50.00000    0  862   12.00000   50.00000   317%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 32
  Cover: 13
  Clique: 22
  MIR: 87
  Zero half: 29
  RLT: 55
  BQP: 3

Explored 1 nodes (29329 simplex iterations) in 50.03 seconds (54.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 10 7 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 5.000000000000e+01, gap 316.6667%

Wrote result file './lp_solutions/grafo3996.35.sol'

