No solution found when using an objective function

Answered

Comments

5 comments

  • Jennifer Locke

    What parameters are you using?    Would you please post your log file? 

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    Comment actions Permalink
  • Matthieu Lormeau

    Parameters I tried are :

    day_room_time_model.setParam(GRB.Param.Threads, 3) # TRIED MORE (16 MAX) BUT IT CRASHES WITH BARRIER
    day_room_time_model.setParam(GRB.Param.Method, 2) # TRIED PRIMAL SIMPLEX AND DUAL BUT DOESN'T CONVERGE EITHER
    day_room_time_model.setParam(GRB.Param.Presolve, 0) # TRIED WITH DEFAULT AND 2
    day_room_time_model.setParam(GRB.Param.MIPFocus, 1)
    day_room_time_model.setParam(GRB.Param.ImproveStartTime, 1800)
    day_room_time_model.setParam(GRB.Param.SolutionLimit, 1)

     

    I'll post the log file soon

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  • Matthieu Lormeau

    Changed value of parameter Threads to 16
    Prev: 0 Min: 0 Max: 1024 Default: 0
    weeks model is being solved
    Gurobi Optimizer version 9.0.0 build v9.0.0rc2 (win64)
    Optimize a model with 2506 rows, 443 columns and 12440 nonzeros
    Model fingerprint: 0x87634e85
    Variable types: 0 continuous, 443 integer (443 binary)
    Coefficient statistics:
    Matrix range [1e+00, 9e+00]
    Objective range [0e+00, 0e+00]
    Bounds range [1e+00, 1e+00]
    RHS range [1e+00, 9e+01]
    Found heuristic solution: objective 0.0000000

    Explored 0 nodes (0 simplex iterations) in 0.02 seconds
    Thread count was 1 (of 16 available processors)

    Solution count 1: 0

    Optimal solution found (tolerance 1.00e-04)
    Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0000%
    Obj: 0

    WEEK #0 IS BEING SOLVED

    number of sessions :443
    Milestone 1
    Milestone 2
    Milestone 3
    Milestone 4
    Milestone 5
    Milestone 6
    MODEL IS BUILT
    Changed value of parameter Threads to 3
    Prev: 0 Min: 0 Max: 1024 Default: 0
    Changed value of parameter Method to 2
    Prev: -1 Min: -1 Max: 5 Default: -1
    Changed value of parameter Presolve to 2
    Prev: -1 Min: -1 Max: 2 Default: -1
    Changed value of parameter MIPFocus to 1
    Prev: 0 Min: 0 Max: 3 Default: 0
    Changed value of parameter ImproveStartTime to 1800.0
    Prev: inf Min: 0.0 Max: inf Default: inf
    Changed value of parameter SolutionLimit to 1
    Prev: 2000000000 Min: 1 Max: 2000000000 Default: 2000000000
    Gurobi Optimizer version 9.0.0 build v9.0.0rc2 (win64)
    Optimize a model with 3487757 rows, 2998224 columns and 125843346 nonzeros
    Model fingerprint: 0x9172f33a
    Variable types: 0 continuous, 2998224 integer (2998224 binary)
    Coefficient statistics:
    Matrix range [1e-01, 1e+00]
    Objective range [1e+00, 2e+02]
    Bounds range [1e+00, 1e+00]
    RHS range [1e+00, 9e+00]
    Presolve removed 0 rows and 0 columns (presolve time = 10s) ...
    Presolve removed 801648 rows and 730800 columns (presolve time = 15s) ...
    Presolve removed 1106436 rows and 1035588 columns (presolve time = 22s) ...
    Presolve removed 1411224 rows and 1035588 columns (presolve time = 26s) ...
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    Presolve removed 1486782 rows and 1035588 columns (presolve time = 49s) ...
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    Presolve removed 1505645 rows and 1035598 columns (presolve time = 1343s) ...
    Presolve removed 1505645 rows and 1035598 columns
    Presolve time: 1343.35s
    Presolved: 1982112 rows, 1962626 columns, 52960894 nonzeros
    Variable types: 0 continuous, 1962626 integer (1962626 binary)
    Presolve removed 0 rows and 0 columns (presolve time = 5s) ...
    Presolve removed 219 rows and 3 columns (presolve time = 11s) ...
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    Presolve removed 304 rows and 3 columns (presolve time = 60s) ...
    Presolve removed 304 rows and 3 columns
    Presolved: 1981808 rows, 1962623 columns, 52861009 nonzeros

    Root barrier log...

    Elapsed ordering time = 5s
    Elapsed ordering time = 10s
    Elapsed ordering time = 15s
    Elapsed ordering time = 20s
    Elapsed ordering time = 25s
    Elapsed ordering time = 30s
    Elapsed ordering time = 35s
    Elapsed ordering time = 40s
    Elapsed ordering time = 45s
    Elapsed ordering time = 50s
    Elapsed ordering time = 55s
    Elapsed ordering time = 60s
    Elapsed ordering time = 65s
    Elapsed ordering time = 70s
    Elapsed ordering time = 75s
    Elapsed ordering time = 80s
    Elapsed ordering time = 85s
    Elapsed ordering time = 90s
    Elapsed ordering time = 95s
    Elapsed ordering time = 100s
    Elapsed ordering time = 105s
    Elapsed ordering time = 110s
    Elapsed ordering time = 115s
    Elapsed ordering time = 120s
    Elapsed ordering time = 125s
    Elapsed ordering time = 130s
    Elapsed ordering time = 135s
    Elapsed ordering time = 140s
    Elapsed ordering time = 145s
    Elapsed ordering time = 150s
    Elapsed ordering time = 155s
    Elapsed ordering time = 160s
    Elapsed ordering time = 165s
    Elapsed ordering time = 170s
    Elapsed ordering time = 175s
    Elapsed ordering time = 180s
    Elapsed ordering time = 185s
    Elapsed ordering time = 190s
    Elapsed ordering time = 195s
    Elapsed ordering time = 200s
    Elapsed ordering time = 205s
    Elapsed ordering time = 210s
    Elapsed ordering time = 215s
    Elapsed ordering time = 319s
    Elapsed ordering time = 320s
    Elapsed ordering time = 325s
    Elapsed ordering time = 330s
    Elapsed ordering time = 335s
    Elapsed ordering time = 340s
    Elapsed ordering time = 345s
    Elapsed ordering time = 350s
    Elapsed ordering time = 355s
    Elapsed ordering time = 360s
    Elapsed ordering time = 365s
    Elapsed ordering time = 370s
    Elapsed ordering time = 375s
    Elapsed ordering time = 380s
    Elapsed ordering time = 385s
    Elapsed ordering time = 390s
    Elapsed ordering time = 395s
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    Elapsed ordering time = 405s
    Elapsed ordering time = 410s
    Elapsed ordering time = 415s
    Elapsed ordering time = 420s
    Elapsed ordering time = 425s
    Elapsed ordering time = 430s
    Elapsed ordering time = 435s
    Elapsed ordering time = 440s
    Elapsed ordering time = 445s
    Elapsed ordering time = 450s
    Elapsed ordering time = 455s
    Elapsed ordering time = 460s
    Elapsed ordering time = 465s
    Elapsed ordering time = 470s
    Elapsed ordering time = 475s
    Elapsed ordering time = 480s
    Elapsed ordering time = 485s
    Elapsed ordering time = 490s
    Elapsed ordering time = 495s
    Elapsed ordering time = 500s
    Elapsed ordering time = 505s
    Elapsed ordering time = 510s
    Elapsed ordering time = 515s
    Elapsed ordering time = 520s
    Elapsed ordering time = 525s
    Elapsed ordering time = 530s
    Elapsed ordering time = 535s
    Elapsed ordering time = 540s
    Elapsed ordering time = 545s
    Elapsed ordering time = 550s
    Elapsed ordering time = 555s
    Ordering time: 612.08s

    Barrier statistics:
    AA' NZ : 1.896e+08
    Factor NZ : 8.566e+08 (roughly 9.0 GBytes of memory)
    Factor Ops : 2.610e+12 (roughly 120 seconds per iteration)
    Threads : 3

    Objective Residual
    Iter Primal Dual Primal Dual Compl Time
    0 1.25804843e+09 0.00000000e+00 7.82e+04 0.00e+00 1.12e+03 2204s
    1 1.09582463e+09 -8.84328591e+05 6.81e+04 8.68e+01 9.76e+02 2307s
    2 7.10105476e+08 -2.46274393e+06 4.42e+04 5.18e+01 6.37e+02 2412s
    3 3.81452187e+08 -3.90663177e+06 2.38e+04 2.10e+01 3.45e+02 2517s
    4 1.24452432e+08 -4.39857604e+06 7.76e+03 6.37e+00 1.15e+02 2623s
    5 6.26459082e+07 -3.79352778e+06 3.91e+03 2.91e+00 5.85e+01 2727s
    6 1.40693023e+07 -2.67848171e+06 8.81e+02 6.37e-01 1.35e+01 2835s
    7 3.34105481e+06 -1.65327462e+06 2.14e+02 2.57e-01 3.52e+00 2943s
    8 1.48595860e+06 -1.01051545e+06 9.68e+01 1.13e-01 1.66e+00 3053s
    9 6.53123458e+05 -7.32481202e+05 4.29e+01 6.73e-02 7.87e-01 3162s
    10 3.23897481e+05 -5.13505052e+05 2.10e+01 5.55e-02 4.11e-01 3276s
    11 1.51519340e+05 -3.53495171e+05 8.69e+00 2.69e-02 1.92e-01 3386s
    12 4.02412521e+04 -1.46933758e+05 3.12e-01 4.55e-13 3.47e-02 3500s
    13 2.39617474e+04 -9.50202362e+03 5.57e-14 4.55e-13 5.67e-03 3609s
    14 1.46100442e+04 -1.41598014e+03 3.60e-14 4.55e-13 2.72e-03 3721s
    15 1.19750707e+04 5.03956658e+02 3.13e-14 4.55e-13 1.94e-03 3829s
    16 1.03803627e+04 1.50057652e+03 1.59e-13 4.55e-13 1.50e-03 3938s
    17 9.24688496e+03 2.06882084e+03 8.30e-14 5.12e-13 1.22e-03 4046s
    18 7.88213658e+03 2.43014201e+03 1.05e-13 2.27e-13 9.24e-04 4153s
    19 7.40068969e+03 2.60325728e+03 1.07e-13 2.84e-13 8.13e-04 4262s
    20 6.92514104e+03 2.78948732e+03 1.75e-13 2.27e-13 7.01e-04 4370s
    21 6.42242404e+03 2.84534214e+03 1.51e-13 6.82e-13 6.06e-04 4475s
    22 6.02560869e+03 2.95631317e+03 1.31e-13 2.27e-13 5.20e-04 4580s
    23 5.16406141e+03 3.08543884e+03 4.47e-13 3.98e-13 3.52e-04 4685s
    24 4.78383777e+03 3.26339784e+03 4.68e-13 6.25e-13 2.58e-04 4790s
    25 4.24545529e+03 3.33200373e+03 1.42e-13 3.41e-13 1.55e-04 4896s
    26 4.11792201e+03 3.35963419e+03 2.14e-13 2.84e-13 1.28e-04 5000s
    27 3.93091387e+03 3.40116608e+03 3.31e-12 2.84e-13 8.97e-05 5105s
    28 3.60274915e+03 3.40505733e+03 9.29e-12 3.41e-13 3.35e-05 5209s
    29 3.50229263e+03 3.41542493e+03 4.05e-12 4.55e-13 1.47e-05 5318s
    30 3.41712113e+03 3.41585875e+03 5.66e-13 6.82e-13 2.14e-07 5425s
    31 3.41600112e+03 3.41599986e+03 7.06e-13 4.55e-13 2.14e-10 5529s
    32 3.41600000e+03 3.41600000e+03 6.76e-13 7.67e-13 2.14e-13 5634s

    Barrier solved model in 32 iterations and 5633.68 seconds
    Optimal objective 3.41600000e+03


    Root crossover log...

    1659251 DPushes remaining with DInf 0.0000000e+00 5637s
    0 DPushes remaining with DInf 2.9844238e-11 5640s

    197143 PPushes remaining with PInf 0.0000000e+00 5640s
    165022 PPushes remaining with PInf 0.0000000e+00 5645s
    155165 PPushes remaining with PInf 0.0000000e+00 5650s
    Warning: 7 variables dropped from basis

    Restart crossover...

    526546 variables added to crossover basis 5656s

    1659251 DPushes remaining with DInf 0.0000000e+00 5657s
    0 DPushes remaining with DInf 3.0009661e-11 5660s

    197143 PPushes remaining with PInf 0.0000000e+00 5660s
    193181 PPushes remaining with PInf 0.0000000e+00 5660s
    168420 PPushes remaining with PInf 0.0000000e+00 5665s
    157717 PPushes remaining with PInf 0.0000000e+00 5671s
    149966 PPushes remaining with PInf 0.0000000e+00 5675s
    144093 PPushes remaining with PInf 0.0000000e+00 5680s
    138341 PPushes remaining with PInf 0.0000000e+00 5685s
    133700 PPushes remaining with PInf 0.0000000e+00 5691s
    129822 PPushes remaining with PInf 0.0000000e+00 5696s
    125610 PPushes remaining with PInf 0.0000000e+00 5701s
    Warning: 1 variables dropped from basis
    Warning: 3 variables dropped from basis
    122249 PPushes remaining with PInf 5.2420380e+03 5706s
    118925 PPushes remaining with PInf 4.8913941e+03 5711s
    Warning: 7 variables dropped from basis
    116744 PPushes remaining with PInf 4.4216688e+05 5715s
    113669 PPushes remaining with PInf 3.9654323e+05 5721s
    111175 PPushes remaining with PInf 3.8834244e+05 5726s
    108682 PPushes remaining with PInf 3.7561739e+05 5731s
    106257 PPushes remaining with PInf 3.7115870e+05 5736s
    104823 PPushes remaining with PInf 3.6443637e+05 5741s
    102457 PPushes remaining with PInf 3.6090892e+05 5746s
    100210 PPushes remaining with PInf 3.5799665e+05 5751s
    98809 PPushes remaining with PInf 3.5508056e+05 5756s
    Warning: 2 variables dropped from basis
    97285 PPushes remaining with PInf 3.5415041e+05 5760s
    95010 PPushes remaining with PInf 3.5277600e+05 5766s
    93603 PPushes remaining with PInf 3.5070119e+05 5770s
    92013 PPushes remaining with PInf 3.4740441e+05 5775s
    89778 PPushes remaining with PInf 3.4634509e+05 5781s
    88313 PPushes remaining with PInf 3.4457436e+05 5785s
    86730 PPushes remaining with PInf 3.4216557e+05 5791s
    85204 PPushes remaining with PInf 3.4153815e+05 5795s
    83027 PPushes remaining with PInf 3.4051651e+05 5803s
    Warning: 5 variables dropped from basis
    82322 PPushes remaining with PInf 7.9436171e+05 5806s
    80749 PPushes remaining with PInf 7.8272085e+05 5812s
    79207 PPushes remaining with PInf 7.8113538e+05 5817s
    78444 PPushes remaining with PInf 7.7982090e+05 5820s
    76956 PPushes remaining with PInf 7.7528665e+05 5826s
    75525 PPushes remaining with PInf 7.7058160e+05 5833s
    74658 PPushes remaining with PInf 7.6686407e+05 5836s
    73118 PPushes remaining with PInf 7.6548810e+05 5841s
    71663 PPushes remaining with PInf 7.6140522e+05 5847s
    70974 PPushes remaining with PInf 7.5991847e+05 5851s
    69301 PPushes remaining with PInf 7.5593167e+05 5857s
    67805 PPushes remaining with PInf 7.5469499e+05 5863s
    67047 PPushes remaining with PInf 7.5369921e+05 5865s
    65556 PPushes remaining with PInf 7.4886577e+05 5872s
    63981 PPushes remaining with PInf 7.4840725e+05 5878s
    63249 PPushes remaining with PInf 7.4783483e+05 5881s
    61836 PPushes remaining with PInf 7.4705676e+05 5888s
    61109 PPushes remaining with PInf 7.4661242e+05 5891s
    59639 PPushes remaining with PInf 7.4567360e+05 5897s
    58927 PPushes remaining with PInf 7.4523860e+05 5901s
    58191 PPushes remaining with PInf 1.2986194e+07 5905s
    56511 PPushes remaining with PInf 1.2680117e+07 5913s
    55729 PPushes remaining with PInf 1.2674518e+07 5917s
    54886 PPushes remaining with PInf 1.2668730e+07 5921s
    53414 PPushes remaining with PInf 1.2655689e+07 5929s
    52617 PPushes remaining with PInf 1.2645898e+07 5932s
    51861 PPushes remaining with PInf 1.2634822e+07 5936s
    50358 PPushes remaining with PInf 1.2609041e+07 5944s
    49527 PPushes remaining with PInf 1.2581144e+07 5948s
    48703 PPushes remaining with PInf 1.2571876e+07 5952s
    47959 PPushes remaining with PInf 1.2561405e+07 5955s
    46434 PPushes remaining with PInf 1.2541918e+07 5964s
    45557 PPushes remaining with PInf 1.2517410e+07 5969s
    44844 PPushes remaining with PInf 1.2509623e+07 5972s
    44115 PPushes remaining with PInf 1.2497385e+07 5976s
    43408 PPushes remaining with PInf 1.2488707e+07 5981s
    42561 PPushes remaining with PInf 1.2468543e+07 5985s
    41000 PPushes remaining with PInf 1.2450792e+07 5994s
    40276 PPushes remaining with PInf 1.2430913e+07 5998s
    39514 PPushes remaining with PInf 1.2414627e+07 6003s
    38782 PPushes remaining with PInf 1.2395365e+07 6007s
    38002 PPushes remaining with PInf 1.2372239e+07 6012s
    37253 PPushes remaining with PInf 1.2350212e+07 6016s
    36493 PPushes remaining with PInf 1.2325819e+07 6020s
    34965 PPushes remaining with PInf 1.2292398e+07 6029s
    34221 PPushes remaining with PInf 1.2279059e+07 6032s
    33392 PPushes remaining with PInf 1.2270358e+07 6037s
    32643 PPushes remaining with PInf 1.2266845e+07 6042s
    31860 PPushes remaining with PInf 1.2253712e+07 6047s
    31131 PPushes remaining with PInf 1.2234220e+07 6051s
    30380 PPushes remaining with PInf 1.2219376e+07 6056s
    29619 PPushes remaining with PInf 1.2213385e+07 6061s
    28911 PPushes remaining with PInf 1.2202000e+07 6066s
    28204 PPushes remaining with PInf 1.2186953e+07 6071s
    27439 PPushes remaining with PInf 1.2178918e+07 6076s
    26726 PPushes remaining with PInf 1.2151557e+07 6081s
    25971 PPushes remaining with PInf 1.2138382e+07 6087s
    25239 PPushes remaining with PInf 1.2123871e+07 6092s
    24506 PPushes remaining with PInf 1.2110483e+07 6097s
    24040 PPushes remaining with PInf 3.2556343e+07 6101s
    23259 PPushes remaining with PInf 3.2312327e+07 6107s
    22455 PPushes remaining with PInf 3.2162325e+07 6112s
    21644 PPushes remaining with PInf 3.2140975e+07 6118s
    20816 PPushes remaining with PInf 3.2111715e+07 6124s
    20074 PPushes remaining with PInf 3.2061782e+07 6129s
    19254 PPushes remaining with PInf 3.2031393e+07 6135s
    18478 PPushes remaining with PInf 3.1999841e+07 6141s
    17728 PPushes remaining with PInf 3.1977055e+07 6147s
    16894 PPushes remaining with PInf 3.1968092e+07 6153s
    16142 PPushes remaining with PInf 3.1949058e+07 6158s
    15375 PPushes remaining with PInf 3.1923496e+07 6164s
    14591 PPushes remaining with PInf 3.1899421e+07 6170s
    13841 PPushes remaining with PInf 3.1880419e+07 6176s
    13087 PPushes remaining with PInf 3.1865697e+07 6182s
    12313 PPushes remaining with PInf 3.1851053e+07 6188s
    11572 PPushes remaining with PInf 3.1830601e+07 6194s
    10801 PPushes remaining with PInf 3.1819978e+07 6200s
    10055 PPushes remaining with PInf 3.1805400e+07 6206s
    9327 PPushes remaining with PInf 3.1789487e+07 6213s
    8593 PPushes remaining with PInf 3.1782185e+07 6218s
    7851 PPushes remaining with PInf 3.1770887e+07 6225s
    7127 PPushes remaining with PInf 3.1760942e+07 6231s
    6412 PPushes remaining with PInf 3.1752759e+07 6237s
    5697 PPushes remaining with PInf 3.1741806e+07 6243s
    4985 PPushes remaining with PInf 3.1727682e+07 6250s
    4270 PPushes remaining with PInf 3.1711892e+07 6257s
    3545 PPushes remaining with PInf 3.1698374e+07 6263s
    2836 PPushes remaining with PInf 3.1685509e+07 6270s
    2089 PPushes remaining with PInf 3.1659600e+07 6277s
    1368 PPushes remaining with PInf 3.1588630e+07 6285s
    637 PPushes remaining with PInf 3.1568703e+07 6292s
    0 PPushes remaining with PInf 3.1541981e+07 6298s

    Push phase complete: Pinf 3.1541981e+07, Dinf 5.0000000e+01 6298s


    Root simplex log...

    Iteration Objective Primal Inf. Dual Inf. Time
    355566 3.4160000e+03 0.000000e+00 5.000000e+01 6300s
    355723 3.4160000e+03 7.409556e+05 0.000000e+00 6325s
    356395 3.4160002e+03 1.441547e+06 0.000000e+00 6374s
    357067 3.4160006e+03 1.918380e+06 0.000000e+00 6423s
    357739 3.4160008e+03 1.756475e+06 0.000000e+00 6471s
    358411 3.4160013e+03 1.020875e+06 0.000000e+00 6523s
    359083 3.4160024e+03 1.729014e+06 0.000000e+00 6577s
    359755 3.4160032e+03 6.432424e+05 0.000000e+00 6629s
    360427 3.4160045e+03 2.414983e+06 0.000000e+00 6684s
    361099 3.4160059e+03 1.493935e+06 0.000000e+00 6740s
    361771 3.4160069e+03 7.436340e+05 0.000000e+00 6794s
    362443 3.4160086e+03 1.392075e+06 0.000000e+00 6850s
    363115 3.4160102e+03 1.240510e+06 0.000000e+00 6906s
    363787 3.4160118e+03 5.373453e+05 0.000000e+00 6965s
    364459 3.4160128e+03 5.797593e+05 0.000000e+00 7023s
    365131 3.4160143e+03 1.651136e+06 0.000000e+00 7083s
    365803 3.4160162e+03 9.908922e+05 0.000000e+00 7144s
    366475 3.4160182e+03 1.678758e+06 0.000000e+00 7205s
    367147 3.4160200e+03 1.673700e+06 0.000000e+00 7269s
    367819 3.4160208e+03 1.405406e+06 0.000000e+00 7332s
    368491 3.4160215e+03 1.581545e+06 0.000000e+00 7393s
    369163 3.4160229e+03 5.584824e+06 0.000000e+00 7458s
    369835 3.4160242e+03 2.217298e+06 0.000000e+00 7522s
    370507 3.4160254e+03 2.946248e+06 0.000000e+00 7589s
    371179 3.4160267e+03 2.477525e+06 0.000000e+00 7658s
    371851 3.4160281e+03 4.211708e+06 0.000000e+00 7724s
    372523 3.4160314e+03 6.520942e+06 0.000000e+00 7790s
    373195 3.4160340e+03 3.068084e+06 0.000000e+00 7857s
    373867 3.4160363e+03 2.670572e+06 0.000000e+00 7925s
    374539 3.4160385e+03 1.912603e+06 0.000000e+00 7993s
    375211 3.4160410e+03 3.984164e+06 0.000000e+00 8061s
    375883 3.4160473e+03 5.521958e+06 0.000000e+00 8125s
    376555 3.4160517e+03 4.072520e+06 0.000000e+00 8195s
    377227 3.4160560e+03 2.451779e+07 0.000000e+00 8265s
    377899 3.4160603e+03 4.916026e+06 0.000000e+00 8336s
    378571 3.4160642e+03 4.623868e+06 0.000000e+00 8404s
    379243 3.4160810e+03 1.020996e+07 0.000000e+00 8454s
    379915 3.4160882e+03 8.376712e+06 0.000000e+00 8513s
    380587 3.4160948e+03 1.537799e+07 0.000000e+00 8582s
    381259 3.4160999e+03 1.615006e+07 0.000000e+00 8648s
    381931 3.4161056e+03 8.374207e+06 0.000000e+00 8713s
    382603 3.4161121e+03 3.696683e+06 0.000000e+00 8784s
    383275 3.4161163e+03 4.342371e+06 0.000000e+00 8843s
    383947 3.4161216e+03 6.158361e+08 0.000000e+00 8920s
    384619 3.4161264e+03 4.995364e+06 0.000000e+00 8986s
    385291 3.4161322e+03 7.655202e+06 0.000000e+00 9057s
    385963 3.4161666e+03 1.038858e+07 0.000000e+00 9121s
    386635 3.4161851e+03 1.286930e+07 0.000000e+00 9189s
    387307 3.4162026e+03 2.461398e+07 0.000000e+00 9256s
    387979 3.4162179e+03 1.834058e+07 0.000000e+00 9323s
    388651 3.4162345e+03 1.609154e+08 0.000000e+00 9389s
    389323 3.4162497e+03 1.565149e+07 0.000000e+00 9458s
    389995 3.4162648e+03 4.975006e+06 0.000000e+00 9533s
    390667 3.4162776e+03 6.304048e+07 0.000000e+00 9607s
    391339 3.4162888e+03 2.301130e+07 0.000000e+00 9680s
    392011 3.4162990e+03 9.743646e+06 0.000000e+00 9754s
    392683 3.4163101e+03 2.338373e+07 0.000000e+00 9830s
    393355 3.4163211e+03 4.911352e+07 0.000000e+00 9896s
    394027 3.4163309e+03 1.558408e+07 0.000000e+00 9974s
    394699 3.4163399e+03 1.220973e+07 0.000000e+00 10049s
    395371 3.4163503e+03 3.646481e+07 0.000000e+00 10124s
    396043 3.4163602e+03 1.540412e+07 0.000000e+00 10202s
    396573 3.4163677e+03 1.948240e+07 0.000000e+00 10265s
    397013 3.4163732e+03 8.143033e+07 0.000000e+00 10324s
    397685 3.4163810e+03 3.546714e+06 0.000000e+00 10397s
    398357 3.4163904e+03 3.310388e+07 0.000000e+00 10471s
    399029 3.4163988e+03 6.909620e+06 0.000000e+00 10540s
    399701 3.4164069e+03 4.863336e+06 0.000000e+00 10618s
    400373 3.4164164e+03 1.638794e+07 0.000000e+00 10699s
    401045 3.4164277e+03 6.807897e+06 0.000000e+00 10773s
    401695 3.4164350e+03 4.596395e+07 0.000000e+00 10852s
    402225 3.4164419e+03 1.405982e+07 0.000000e+00 10911s
    402695 3.4164477e+03 5.105177e+06 0.000000e+00 10966s
    403075 3.4164517e+03 1.417707e+07 0.000000e+00 11013s
    403475 3.4164563e+03 1.220566e+07 0.000000e+00 11060s
    403875 3.4164605e+03 1.127120e+07 0.000000e+00 11108s
    404245 3.4164647e+03 1.494047e+07 0.000000e+00 11160s
    404917 3.4164721e+03 6.828626e+06 0.000000e+00 11228s
    405589 3.4164806e+03 4.503878e+06 0.000000e+00 11306s
    406261 3.4164880e+03 5.171731e+07 0.000000e+00 11391s
    406933 3.4164966e+03 9.874363e+06 0.000000e+00 11459s
    407605 3.4165032e+03 8.518848e+06 0.000000e+00 11543s
    408277 3.4165107e+03 8.246188e+07 0.000000e+00 11612s
    408949 3.4165177e+03 5.383380e+06 0.000000e+00 11698s
    409621 3.4165254e+03 1.412614e+07 0.000000e+00 11768s
    410293 3.4165330e+03 4.636516e+07 0.000000e+00 11854s
    410965 3.4165398e+03 7.421082e+06 0.000000e+00 11923s
    411637 3.4165457e+03 4.976317e+06 0.000000e+00 12003s
    412309 3.4165523e+03 6.487004e+06 0.000000e+00 12087s
    412981 3.4165587e+03 7.581628e+06 0.000000e+00 12170s
    413601 3.4165655e+03 5.811984e+06 0.000000e+00 12247s
    414141 3.4166098e+03 3.626580e+06 0.000000e+00 12313s
    414711 3.4166561e+03 8.325089e+06 0.000000e+00 12372s
    415221 3.4166783e+03 2.274173e+08 0.000000e+00 12431s
    415771 3.4166992e+03 3.710908e+06 0.000000e+00 12489s
    416231 3.4167156e+03 4.637718e+06 0.000000e+00 12546s
    416771 3.4167305e+03 2.711201e+06 0.000000e+00 12606s
    417271 3.4167447e+03 1.515338e+07 0.000000e+00 12668s
    417781 3.4167606e+03 6.187077e+06 0.000000e+00 12728s
    418301 3.4167725e+03 5.571272e+06 0.000000e+00 12787s
    418761 3.4167810e+03 1.306086e+06 0.000000e+00 12844s
    419231 3.4167885e+03 1.875391e+06 0.000000e+00 12903s
    419731 3.4167992e+03 2.909786e+06 0.000000e+00 12964s
    420291 3.4168114e+03 1.152826e+06 0.000000e+00 13036s
    420963 3.4168255e+03 3.118045e+06 0.000000e+00 13102s
    421635 3.4168402e+03 7.845949e+06 0.000000e+00 13183s
    422307 3.4168527e+03 1.077091e+07 0.000000e+00 13265s
    422979 3.4168657e+03 1.002946e+06 0.000000e+00 13349s
    423549 3.4168761e+03 2.900545e+06 0.000000e+00 13420s
    424029 3.4168845e+03 1.212426e+06 0.000000e+00 13478s
    424479 3.4168925e+03 9.157165e+06 0.000000e+00 13536s
    424879 3.4169009e+03 1.811936e+06 0.000000e+00 13591s
    425349 3.4169086e+03 5.751457e+06 0.000000e+00 13652s
    425859 3.4169169e+03 4.178878e+07 0.000000e+00 13718s
    426429 3.4169266e+03 1.055182e+07 0.000000e+00 13787s
    426949 3.4169344e+03 1.290496e+07 0.000000e+00 13852s
    427459 3.4169418e+03 5.478262e+06 0.000000e+00 13915s
    427949 3.4169497e+03 6.575510e+06 0.000000e+00 13974s
    428459 3.4169566e+03 3.205291e+06 0.000000e+00 14033s
    428909 3.4169632e+03 1.291204e+07 0.000000e+00 14089s
    429319 3.4169692e+03 3.840166e+06 0.000000e+00 14142s
    429759 3.4169756e+03 4.905920e+06 0.000000e+00 14197s
    430209 3.4169820e+03 8.880830e+07 0.000000e+00 14254s
    430659 3.4169878e+03 2.386210e+06 0.000000e+00 14313s
    431059 3.4169934e+03 4.596722e+06 0.000000e+00 14367s
    431499 3.4169993e+03 1.768123e+06 0.000000e+00 14422s
    431939 3.4170046e+03 2.277461e+06 0.000000e+00 14477s
    432339 3.4170110e+03 2.804097e+06 0.000000e+00 14529s
    432709 3.4170155e+03 2.110346e+06 0.000000e+00 14580s
    433099 3.4170207e+03 7.683064e+06 0.000000e+00 14632s
    433549 3.4170273e+03 1.696802e+06 0.000000e+00 14689s
    433969 3.4170323e+03 1.528491e+06 0.000000e+00 14741s
    434379 3.4170365e+03 2.635154e+07 0.000000e+00 14793s
    434789 3.4170415e+03 4.021948e+07 0.000000e+00 14845s
    435179 3.4170466e+03 3.545328e+06 0.000000e+00 14898s
    435639 3.4170520e+03 3.010894e+06 0.000000e+00 14956s
    436079 3.4170574e+03 1.828910e+06 0.000000e+00 15012s
    436529 3.4170628e+03 7.293517e+06 0.000000e+00 15068s
    436959 3.4170678e+03 6.252721e+06 0.000000e+00 15124s
    437389 3.4170726e+03 2.495115e+06 0.000000e+00 15179s
    437869 3.4170778e+03 1.161503e+07 0.000000e+00 15236s
    438409 3.4170839e+03 2.062543e+06 0.000000e+00 15302s
    438919 3.4170904e+03 2.275322e+06 0.000000e+00 15370s
    439449 3.4170959e+03 1.661724e+06 0.000000e+00 15436s
    439949 3.4171023e+03 1.728052e+06 0.000000e+00 15502s
    440389 3.4171068e+03 3.833540e+06 0.000000e+00 15560s
    440789 3.4171116e+03 3.212408e+07 0.000000e+00 15613s
    441279 3.4171169e+03 4.726975e+07 0.000000e+00 15672s
    441739 3.4171217e+03 2.466407e+06 0.000000e+00 15730s
    442239 3.4171268e+03 1.315742e+06 0.000000e+00 15790s
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  • Matthieu Lormeau

    Hi, any update on this ?

    thank you very much for your kind help

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  • Silke Horn

    If you have a feasible solution for objective zero, you could provide this as a MIP start. There are different ways to do this. You can set the Start attributes to the corresponding warm-start values or read a .mst or .sol solution file with Model.read(). You could also let Gurobi solve the model without setting an objective, then change the model by setting the objective and optimize again. Gurobi should then automatically use the previous solution as a MIP start.

    However, from your log, it seems that the solver is already struggling when solving the root relaxation (in particular, in the simplex phase). A MIP start will not help with that. You could try setting DegenMoves=0 or tightening BarConvTol.

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