
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 18:29:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1607.32.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/grafo1607.32.lp
Reading time = 0.18 seconds
: 108320 rows, 1546 columns, 326194 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 108320 rows, 1546 columns and 326194 nonzeros
Model fingerprint: 0xbf1b5d21
Variable types: 38 continuous, 1508 integer (1508 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 46382 rows and 13 columns
Presolve time: 0.73s
Presolved: 61938 rows, 1533 columns, 187328 nonzeros
Variable types: 0 continuous, 1533 integer (1495 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 1524 rows, 63462 columns, 188861 nonzeros


Root relaxation: objective 4.400000e+01, 1755 iterations, 0.42 seconds (0.45 work units)
Total elapsed time = 5.27s (DegenMoves)

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

     0     0   44.00000    0  442    7.00000   44.00000   529%     -    6s
H    0     0                       8.0000000   44.00000   450%     -   14s
     0     0   43.96667    0  690    8.00000   43.96667   450%     -   14s
     0     0   43.96667    0  672    8.00000   43.96667   450%     -   15s
H    0     0                       9.0000000   43.96667   389%     -   17s
H    0     0                      10.0000000   43.96667   340%     -   43s
H    0     0                      12.0000000   43.96667   266%     -   43s
     0     0   43.96667    0  491   12.00000   43.96667   266%     -   43s
     0     0   43.96667    0  485   12.00000   43.96667   266%     -   44s
     0     0          -    0        12.00000   43.96667   266%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 32
  Clique: 37
  MIR: 163
  StrongCG: 2
  GUB cover: 1
  Zero half: 66
  RLT: 73
  BQP: 3

Explored 1 nodes (35003 simplex iterations) in 50.08 seconds (46.08 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 10 9 ... 7

Time limit reached
Best objective 1.200000000000e+01, best bound 4.300000000000e+01, gap 258.3333%

Wrote result file './lp_solutions/grafo1607.32.sol'

