Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.001916/0.001916, allocations: 88.72 kB / 19.44 MB, free: 356 kB / 13.93 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.002506/0.002506, allocations: 157.7 kB / 22.75 MB, free: 1.684 MB / 18.57 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 1.558/1.558, allocations: 177.1 MB / 203.1 MB, free: 5.605 MB / 186.7 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:108:writable] Warning: Lexer treating \\ as \\\\, since \\e is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Examples/PPD12/Structure.mo:531:21-545:116:writable] Warning: Lexer treating \\ as \\\\, since \\< is not a valid Modelica escape sequence. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.order:0:0-0:0:readonly] Warning: Found duplicate names in package.order file: A, B, C. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Media/Refrigerants/R410A/package.mo:2:1-70:10:writable] Warning: C was referenced in the package.order file, but was not found in package.mo, C/package.mo or C.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo): time 1.33/1.33, allocations: 154.6 MB / 414.2 MB, free: 0.6562 MB / 378.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/Cryptographics/BaseClasses/sha.mo:2:1-19:8:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/Utilities/File/sha2.mo:2:1-9:9:writable] Warning: External function annotation should occur on the external-clause, not on the function. " [Timeout remaining time 178] Using package IDEAS with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 4.0.0/package.mo) Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo) Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo) Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo) Running command: translateModel(IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading") translateModel(IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.523e-06/1.523e-06, allocations: 0 / 0.5196 GB, free: 2.562 MB / 490.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 2.819e-05/2.972e-05, allocations: 3.344 kB / 0.5196 GB, free: 2.559 MB / 490.7 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading): time 0.06862/0.06865, allocations: 51.24 MB / 0.5697 GB, free: 15.29 MB / 0.5417 GB Notification: Performance of NFInst.instExpressions: time 0.03138/0.1, allocations: 16.91 MB / 0.5862 GB, free: 14.39 MB / 0.5573 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.003445/0.1035, allocations: 107.1 kB / 0.5863 GB, free: 14.28 MB / 0.5573 GB Notification: Performance of NFTyping.typeComponents: time 0.003389/0.1069, allocations: 0.9078 MB / 0.5872 GB, free: 13.37 MB / 0.5573 GB Notification: Performance of NFTyping.typeBindings: time 0.0088/0.1157, allocations: 2.734 MB / 0.5898 GB, free: 10.62 MB / 0.5573 GB Notification: Performance of NFTyping.typeClassSections: time 0.004935/0.1206, allocations: 1.68 MB / 0.5915 GB, free: 8.934 MB / 0.5573 GB Notification: Performance of NFFlatten.flatten: time 0.02986/0.1505, allocations: 22.25 MB / 0.6132 GB, free: 2.617 MB / 0.573 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01467/0.1651, allocations: 7.376 MB / 0.6204 GB, free: 11.13 MB / 0.5886 GB Notification: Performance of NFEvalConstants.evaluate: time 0.03083/0.196, allocations: 10.48 MB / 0.6306 GB, free: 0.7422 MB / 0.5886 GB Notification: Performance of NFSimplifyModel.simplify: time 0.01507/0.211, allocations: 6.312 MB / 0.6368 GB, free: 10.41 MB / 0.6042 GB Notification: Performance of NFPackage.collectConstants: time 0.00361/0.2146, allocations: 0.9375 MB / 0.6377 GB, free: 9.477 MB / 0.6042 GB Notification: Performance of NFFlatten.collectFunctions: time 0.008227/0.2229, allocations: 1.596 MB / 0.6393 GB, free: 7.879 MB / 0.6042 GB Notification: Performance of NFScalarize.scalarize: time 0.005911/0.2288, allocations: 2.488 MB / 0.6417 GB, free: 5.383 MB / 0.6042 GB Notification: Performance of NFVerifyModel.verify: time 0.01266/0.2414, allocations: 3.364 MB / 0.645 GB, free: 2.008 MB / 0.6042 GB Notification: Performance of NFConvertDAE.convert: time 0.02782/0.2693, allocations: 13.53 MB / 0.6582 GB, free: 4.445 MB / 0.6198 GB Notification: Performance of FrontEnd - DAE generated: time 1.144e-05/0.2693, allocations: 0 / 0.6582 GB, free: 4.445 MB / 0.6198 GB Notification: Performance of FrontEnd: time 2.364e-06/0.2693, allocations: 4 kB / 0.6582 GB, free: 4.441 MB / 0.6198 GB Notification: Performance of Transformations before backend: time 0.0005344/0.2698, allocations: 0 / 0.6582 GB, free: 4.441 MB / 0.6198 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 1564 * Number of variables: 1564 Notification: Performance of Generate backend data structure: time 0.02788/0.2977, allocations: 8.552 MB / 0.6665 GB, free: 11.8 MB / 0.6355 GB Notification: Performance of prepare preOptimizeDAE: time 4.475e-05/0.2977, allocations: 8.031 kB / 0.6666 GB, free: 11.8 MB / 0.6355 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.007671/0.3054, allocations: 1.514 MB / 0.668 GB, free: 10.28 MB / 0.6355 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01815/0.3236, allocations: 7.177 MB / 0.675 GB, free: 3.02 MB / 0.6355 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0005732/0.3241, allocations: 456.6 kB / 0.6755 GB, free: 2.57 MB / 0.6355 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00276/0.3269, allocations: 0.6175 MB / 0.6761 GB, free: 1.953 MB / 0.6355 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.5287/0.8556, allocations: 10.1 MB / 0.6859 GB, free: 181.5 MB / 0.6355 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001792/0.8557, allocations: 24.92 kB / 0.686 GB, free: 181.5 MB / 0.6355 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00109/0.8568, allocations: 257.6 kB / 0.6862 GB, free: 181.3 MB / 0.6355 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.000155/0.857, allocations: 179.8 kB / 0.6864 GB, free: 181.3 MB / 0.6355 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.01383/0.8708, allocations: 7.449 MB / 0.6937 GB, free: 178.8 MB / 0.6355 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.04993/0.9207, allocations: 26.62 MB / 0.7197 GB, free: 164.3 MB / 0.6355 GB Notification: Performance of preOpt comSubExp (simulation): time 0.007884/0.9286, allocations: 3.98 MB / 0.7235 GB, free: 162.9 MB / 0.6355 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.005913/0.9345, allocations: 3.034 MB / 0.7265 GB, free: 161.9 MB / 0.6355 GB Notification: Performance of preOpt evalFunc (simulation): time 0.001179/0.9357, allocations: 229.5 kB / 0.7267 GB, free: 161.9 MB / 0.6355 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.005375/0.9411, allocations: 3.453 MB / 0.7301 GB, free: 159.7 MB / 0.6355 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.002951/0.944, allocations: 323.6 kB / 0.7304 GB, free: 159.6 MB / 0.6355 GB Notification: Performance of pre-optimization done (n=317): time 1.965e-05/0.9441, allocations: 0 / 0.7304 GB, free: 159.6 MB / 0.6355 GB Notification: Performance of matching and sorting (n=317): time 0.01415/0.9582, allocations: 7.041 MB / 0.7373 GB, free: 156.3 MB / 0.6355 GB Notification: Performance of inlineWhenForInitialization (initialization): time 5.001e-05/0.9583, allocations: 82.53 kB / 0.7374 GB, free: 156.2 MB / 0.6355 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009003/0.9673, allocations: 4.988 MB / 0.7422 GB, free: 151.3 MB / 0.6355 GB Notification: Performance of collectPreVariables (initialization): time 0.0009299/0.9682, allocations: 86.64 kB / 0.7423 GB, free: 151.2 MB / 0.6355 GB Notification: Performance of collectInitialEqns (initialization): time 0.003049/0.9712, allocations: 3.27 MB / 0.7455 GB, free: 148.3 MB / 0.6355 GB Notification: Performance of collectInitialBindings (initialization): time 0.001823/0.9731, allocations: 1.156 MB / 0.7466 GB, free: 147.3 MB / 0.6355 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002496/0.9756, allocations: 0.8546 MB / 0.7475 GB, free: 146.5 MB / 0.6355 GB Notification: Performance of setup shared object (initialization): time 4.546e-05/0.9756, allocations: 301.1 kB / 0.7478 GB, free: 146.2 MB / 0.6355 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002967/0.9786, allocations: 2.192 MB / 0.7499 GB, free: 144 MB / 0.6355 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003367/0.9819, allocations: 3.827 MB / 0.7536 GB, free: 139.4 MB / 0.6355 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.006228/0.9882, allocations: 6.33 MB / 0.7598 GB, free: 132.4 MB / 0.6355 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.756e-05/0.9882, allocations: 12 kB / 0.7598 GB, free: 132.4 MB / 0.6355 GB Notification: Performance of matching and sorting (n=569) (initialization): time 0.009809/0.998, allocations: 6.964 MB / 0.7666 GB, free: 125.4 MB / 0.6355 GB Notification: Performance of prepare postOptimizeDAE: time 5.742e-05/0.9981, allocations: 57.7 kB / 0.7667 GB, free: 125.4 MB / 0.6355 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.409e-05/0.9981, allocations: 48 kB / 0.7667 GB, free: 125.3 MB / 0.6355 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002224/1, allocations: 0.536 MB / 0.7673 GB, free: 124.8 MB / 0.6355 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003437/1.004, allocations: 1.01 MB / 0.7682 GB, free: 123.8 MB / 0.6355 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004548/1.008, allocations: 5.373 MB / 0.7735 GB, free: 118.2 MB / 0.6355 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004566/1.013, allocations: 299.6 kB / 0.7738 GB, free: 118 MB / 0.6355 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0007406/1.014, allocations: 219.9 kB / 0.774 GB, free: 117.7 MB / 0.6355 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 222 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,dHTan.local_reset,dHTanEnh.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (540): * Single equations (assignments): 537 * Array equations: 0 * Algorithm blocks: 1 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,14,100.0%), (1,14,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.004345/1.018, allocations: 2.479 MB / 0.7764 GB, free: 115.3 MB / 0.6355 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.002153/1.02, allocations: 0.5868 MB / 0.777 GB, free: 114.7 MB / 0.6355 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.008948/1.029, allocations: 5.2 MB / 0.7821 GB, free: 109.5 MB / 0.6355 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.728e-05/1.029, allocations: 39.88 kB / 0.7821 GB, free: 109.4 MB / 0.6355 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 2.061e-05/1.029, allocations: 4 kB / 0.7821 GB, free: 109.4 MB / 0.6355 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.006186/1.035, allocations: 4.525 MB / 0.7865 GB, free: 104.8 MB / 0.6355 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02395/1.059, allocations: 10.44 MB / 0.7967 GB, free: 94.36 MB / 0.6355 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.573e-05/1.059, allocations: 4 kB / 0.7967 GB, free: 94.35 MB / 0.6355 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002886/1.062, allocations: 0.6503 MB / 0.7974 GB, free: 93.7 MB / 0.6355 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002107/1.064, allocations: 477.5 kB / 0.7978 GB, free: 93.25 MB / 0.6355 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005402/1.065, allocations: 79.95 kB / 0.7979 GB, free: 93.17 MB / 0.6355 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004769/1.07, allocations: 5.317 MB / 0.8031 GB, free: 87.67 MB / 0.6355 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.729e-06/1.07, allocations: 6.297 kB / 0.8031 GB, free: 87.67 MB / 0.6355 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01153/1.081, allocations: 7.772 MB / 0.8107 GB, free: 79.8 MB / 0.6355 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003175/1.084, allocations: 1.092 MB / 0.8117 GB, free: 78.71 MB / 0.6355 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001341/1.086, allocations: 71.98 kB / 0.8118 GB, free: 78.64 MB / 0.6355 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003531/1.089, allocations: 199 kB / 0.812 GB, free: 78.46 MB / 0.6355 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0004822/1.09, allocations: 202.7 kB / 0.8122 GB, free: 78.26 MB / 0.6355 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0004043/1.09, allocations: 139.9 kB / 0.8123 GB, free: 78.12 MB / 0.6355 GB Notification: Performance of sorting global known variables: time 0.00554/1.096, allocations: 3.388 MB / 0.8156 GB, free: 74.74 MB / 0.6355 GB Notification: Performance of sort global known variables: time 1.8e-07/1.096, allocations: 0 / 0.8156 GB, free: 74.74 MB / 0.6355 GB Notification: Performance of remove unused functions: time 0.009141/1.105, allocations: 2.097 MB / 0.8177 GB, free: 72.64 MB / 0.6355 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 16 (tanEnh.vol[1].dynBal.U,tanEnh.vol[2].dynBal.U,tanEnh.vol[3].dynBal.U,tanEnh.vol[4].dynBal.U,tanEnh.vol[5].dynBal.U,tanEnh.vol[6].dynBal.U,tanEnh.vol[7].dynBal.U,tan.vol[1].dynBal.U,tan.vol[2].dynBal.U,tan.vol[3].dynBal.U,tan.vol[4].dynBal.U,tan.vol[5].dynBal.U,tan.vol[6].dynBal.U,tan.vol[7].dynBal.U,dHTanEnh.y,dHTan.y) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (296): * Single equations (assignments): 289 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 2 systems {(1,14,100.0%), (1,14,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.001528/1.106, allocations: 487.6 kB / 0.8181 GB, free: 72.18 MB / 0.6355 GB Notification: Performance of simCode: created initialization part: time 0.007813/1.114, allocations: 5.258 MB / 0.8233 GB, free: 66.87 MB / 0.6355 GB Notification: Performance of simCode: created event and clocks part: time 1.07e-05/1.114, allocations: 4 kB / 0.8233 GB, free: 66.86 MB / 0.6355 GB Notification: Performance of simCode: created simulation system equations: time 0.003434/1.118, allocations: 2.37 MB / 0.8256 GB, free: 64.46 MB / 0.6355 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01356/1.131, allocations: 2.879 MB / 0.8284 GB, free: 61.78 MB / 0.6355 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02107/1.152, allocations: 13.79 MB / 0.8419 GB, free: 47.88 MB / 0.6355 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.003274/1.155, allocations: 4.157 MB / 0.8459 GB, free: 43.69 MB / 0.6355 GB Notification: Performance of simCode: alias equations: time 0.005436/1.161, allocations: 1.877 MB / 0.8478 GB, free: 41.83 MB / 0.6355 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001444/1.162, allocations: 436.3 kB / 0.8482 GB, free: 41.41 MB / 0.6355 GB Notification: Performance of SimCode: time 2.224e-06/1.162, allocations: 0 / 0.8482 GB, free: 41.41 MB / 0.6355 GB Notification: Performance of Templates: time 0.425/1.587, allocations: 102.4 MB / 0.9482 GB, free: 212.7 MB / 0.6824 GB " [Timeout remaining time 658] make -j1 -f IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.makefile [Timeout 660] (rm -f IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe ; mkfifo IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe >> ../files/IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.sim & ./IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Storage.Validation.StratifiedLoadingUnloading.pipe 2>&1) [Timeout 480] [Calling sys.exit(0), Time elapsed: 10.745838157949038]