
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:31:01 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7246.42.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/grafo7246.42.lp
Reading time = 0.16 seconds
: 101422 rows, 2349 columns, 306257 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 101422 rows, 2349 columns and 306257 nonzeros
Model fingerprint: 0x4a9ebd5c
Variable types: 46 continuous, 2303 integer (2303 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 29841 rows and 35 columns
Presolve time: 0.58s
Presolved: 71581 rows, 2314 columns, 217199 nonzeros
Variable types: 0 continuous, 2314 integer (2268 binary)
Root relaxation presolved: 2310 rows, 73891 columns, 219513 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26327    4.8911017e+01   0.000000e+00   1.232689e+04      5s
   42075    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   42075    4.9000000e+01   0.000000e+00   0.000000e+00      8s
   42075    4.9000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.900000e+01, 42075 iterations, 7.53 seconds (6.56 work units)
Total elapsed time = 16.20s (DegenMoves)

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

     0     0   49.00000    0  332          -   49.00000      -     -   17s
H    0     0                      11.0000000   49.00000   345%     -   18s
     0     0   49.00000    0  679   11.00000   49.00000   345%     -   27s
H    0     0                      16.0000000   49.00000   206%     -   27s
     0     0   49.00000    0  679   16.00000   49.00000   206%     -   28s
     0     0   49.00000    0  643   16.00000   49.00000   206%     -   46s
     0     0   49.00000    0  602   16.00000   49.00000   206%     -   48s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 29
  Clique: 14
  MIR: 163
  StrongCG: 3
  Zero half: 3
  RLT: 19

Explored 1 nodes (74706 simplex iterations) in 50.07 seconds (45.94 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 11 

Time limit reached
Best objective 1.600000000000e+01, best bound 4.900000000000e+01, gap 206.2500%

Wrote result file './lp_solutions/grafo7246.42.sol'

