Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.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 0.001251/0.001251, allocations: 80.92 kB / 20.75 MB, free: 3.738 MB / 18.57 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 0.001414/0.001414, allocations: 165 kB / 24.17 MB, free: 332 kB / 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 1.036/1.036, allocations: 177.1 MB / 204.6 MB, free: 5.488 MB / 186.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo", uses=false) [Timeout 180] "[/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/package.mo): time 0.6071/0.6071, allocations: 110.3 MB / 371.3 MB, free: 12.38 MB / 346.7 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:44:3-56:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:58:3-65:19:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:67:3-72:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/BoundaryConditions/Scenarios/CombiTimeTable.mo:74:3-79:20:writable] Warning: External function annotation should occur on the external-clause, not on the function. " [Timeout remaining time 179] Using package BuildSysPro with version 3.6.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/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(BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet") translateModel(BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet,tolerance=1e-06,outputFormat="empty",numberOfIntervals=2500,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet") [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 1.443e-06/1.443e-06, allocations: 0 / 422.4 MB, free: 9.406 MB / 394.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 1.88e-05/2.024e-05, allocations: 2.312 kB / 422.4 MB, free: 9.402 MB / 394.7 MB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet): time 0.3283/0.3283, allocations: 149.1 MB / 0.5581 GB, free: 11.02 MB / 0.4948 GB Notification: Performance of NFInst.instExpressions: time 0.0008248/0.3292, allocations: 0.584 MB / 0.5587 GB, free: 10.43 MB / 0.4948 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.000118/0.3293, allocations: 11.88 kB / 0.5587 GB, free: 10.42 MB / 0.4948 GB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/IBPSA/Fluid/FMI/Conversion/AirToOutlet.mo:96:3-99:60:writable] Warning: Connector bacPro_internal is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/IBPSA/Fluid/FMI/Conversion/AirToOutlet.mo:96:3-99:60:writable] Warning: Connector bacPro_internal is not balanced: The number of potential variables (3) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/IBPSA/Fluid/FMI/Conversion/AirToOutlet.mo:96:3-99:60:writable] Warning: Connector bacPro_internal is not balanced: The number of potential variables (2) is not equal to the number of flow variables (0). [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.7.0/IBPSA/Fluid/FMI/Conversion/AirToOutlet.mo:96:3-99:60:writable] Warning: Connector bacPro_internal is not balanced: The number of potential variables (3) is not equal to the number of flow variables (0). Notification: Performance of NFTyping.typeComponents: time 0.0004074/0.3297, allocations: 127.1 kB / 0.5588 GB, free: 10.3 MB / 0.4948 GB Notification: Performance of NFTyping.typeBindings: time 0.00023/0.3299, allocations: 97.62 kB / 0.5589 GB, free: 10.2 MB / 0.4948 GB Notification: Performance of NFTyping.typeClassSections: time 0.0009506/0.3309, allocations: 0.5439 MB / 0.5594 GB, free: 9.664 MB / 0.4948 GB Notification: Performance of NFFlatten.flatten: time 0.0003385/0.3312, allocations: 423.1 kB / 0.5599 GB, free: 9.25 MB / 0.4948 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0001924/0.3314, allocations: 104.1 kB / 0.56 GB, free: 9.148 MB / 0.4948 GB Notification: Performance of NFEvalConstants.evaluate: time 0.0002556/0.3317, allocations: 235.4 kB / 0.5602 GB, free: 8.918 MB / 0.4948 GB Notification: Performance of NFSimplifyModel.simplify: time 0.0001499/0.3318, allocations: 131.6 kB / 0.5603 GB, free: 8.789 MB / 0.4948 GB Notification: Performance of NFPackage.collectConstants: time 2.19e-05/0.3318, allocations: 16 kB / 0.5603 GB, free: 8.773 MB / 0.4948 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0004455/0.3323, allocations: 378.7 kB / 0.5607 GB, free: 8.402 MB / 0.4948 GB Notification: Performance of NFScalarize.scalarize: time 7.734e-05/0.3324, allocations: 75.72 kB / 0.5608 GB, free: 8.328 MB / 0.4948 GB Notification: Performance of NFVerifyModel.verify: time 5.984e-05/0.3324, allocations: 71.84 kB / 0.5608 GB, free: 8.258 MB / 0.4948 GB Notification: Performance of NFConvertDAE.convert: time 0.0004206/0.3328, allocations: 386.6 kB / 0.5612 GB, free: 7.879 MB / 0.4948 GB Notification: Performance of FrontEnd - DAE generated: time 3.998e-06/0.3328, allocations: 4 kB / 0.5612 GB, free: 7.875 MB / 0.4948 GB Notification: Performance of FrontEnd: time 1.904e-06/0.3328, allocations: 0 / 0.5612 GB, free: 7.875 MB / 0.4948 GB Notification: Performance of Transformations before backend: time 4.849e-06/0.3328, allocations: 0 / 0.5612 GB, free: 7.875 MB / 0.4948 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 56 * Number of variables: 56 Notification: Performance of Generate backend data structure: time 0.0004043/0.3332, allocations: 434 kB / 0.5616 GB, free: 7.434 MB / 0.4948 GB Notification: Performance of prepare preOptimizeDAE: time 3.112e-05/0.3333, allocations: 12.03 kB / 0.5616 GB, free: 7.422 MB / 0.4948 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.000209/0.3335, allocations: 64.83 kB / 0.5617 GB, free: 7.359 MB / 0.4948 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0002147/0.3337, allocations: 193.6 kB / 0.5619 GB, free: 7.145 MB / 0.4948 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001227/0.3338, allocations: 242 kB / 0.5621 GB, free: 6.859 MB / 0.4948 GB Notification: Performance of preOpt expandDerOperator (simulation): time 2.173e-05/0.3338, allocations: 20 kB / 0.5621 GB, free: 6.84 MB / 0.4948 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0002168/0.3341, allocations: 246.6 kB / 0.5623 GB, free: 6.562 MB / 0.4948 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.275e-05/0.3341, allocations: 2.578 kB / 0.5624 GB, free: 6.562 MB / 0.4948 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 1.565e-05/0.3341, allocations: 12 kB / 0.5624 GB, free: 6.551 MB / 0.4948 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 7.835e-06/0.3341, allocations: 4 kB / 0.5624 GB, free: 6.547 MB / 0.4948 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 9.313e-05/0.3342, allocations: 81.12 kB / 0.5624 GB, free: 6.469 MB / 0.4948 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.0007482/0.3349, allocations: 1.33 MB / 0.5637 GB, free: 5.086 MB / 0.4948 GB Notification: Performance of preOpt comSubExp (simulation): time 5.789e-05/0.335, allocations: 165.1 kB / 0.5639 GB, free: 4.914 MB / 0.4948 GB Notification: Performance of preOpt resolveLoops (simulation): time 1.935e-05/0.335, allocations: 80.14 kB / 0.564 GB, free: 4.832 MB / 0.4948 GB Notification: Performance of preOpt evalFunc (simulation): time 1.749e-05/0.335, allocations: 79.27 kB / 0.5641 GB, free: 4.754 MB / 0.4948 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.486e-05/0.3351, allocations: 117.8 kB / 0.5642 GB, free: 4.629 MB / 0.4948 GB Notification: Performance of pre-optimization done (n=0): time 9.02e-07/0.3351, allocations: 0 / 0.5642 GB, free: 4.629 MB / 0.4948 GB Notification: Performance of matching and sorting (n=0): time 5.246e-05/0.3351, allocations: 41.67 kB / 0.5642 GB, free: 4.582 MB / 0.4948 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.371e-05/0.3352, allocations: 126.7 kB / 0.5643 GB, free: 4.445 MB / 0.4948 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0001423/0.3353, allocations: 207.3 kB / 0.5645 GB, free: 4.23 MB / 0.4948 GB Notification: Performance of collectPreVariables (initialization): time 6.513e-06/0.3353, allocations: 25.7 kB / 0.5645 GB, free: 4.199 MB / 0.4948 GB Notification: Performance of collectInitialEqns (initialization): time 7.757e-05/0.3354, allocations: 199.6 kB / 0.5647 GB, free: 4 MB / 0.4948 GB Notification: Performance of collectInitialBindings (initialization): time 5.34e-06/0.3354, allocations: 11.98 kB / 0.5647 GB, free: 3.988 MB / 0.4948 GB Notification: Performance of simplifyInitialFunctions (initialization): time 4.575e-05/0.3354, allocations: 37.66 kB / 0.5648 GB, free: 3.945 MB / 0.4948 GB Notification: Performance of setup shared object (initialization): time 0.0002332/0.3357, allocations: 322.8 kB / 0.5651 GB, free: 3.621 MB / 0.4948 GB Notification: Performance of preBalanceInitialSystem (initialization): time 2.959e-05/0.3357, allocations: 11.98 kB / 0.5651 GB, free: 3.609 MB / 0.4948 GB Notification: Performance of partitionIndependentBlocks (initialization): time 7.422e-05/0.3358, allocations: 141.1 kB / 0.5652 GB, free: 3.41 MB / 0.4948 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0001168/0.3359, allocations: 171.7 kB / 0.5654 GB, free: 3.18 MB / 0.4948 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.725e-06/0.3359, allocations: 0 / 0.5654 GB, free: 3.18 MB / 0.4948 GB Notification: Performance of matching and sorting (n=20) (initialization): time 0.0001658/0.3361, allocations: 153.8 kB / 0.5655 GB, free: 3.023 MB / 0.4948 GB Notification: Performance of prepare postOptimizeDAE: time 1.463e-05/0.3361, allocations: 11.94 kB / 0.5656 GB, free: 3.012 MB / 0.4948 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.132e-06/0.3361, allocations: 7.938 kB / 0.5656 GB, free: 3.004 MB / 0.4948 GB Notification: Performance of postOpt tearingSystem (initialization): time 1.419e-05/0.3361, allocations: 4 kB / 0.5656 GB, free: 3 MB / 0.4948 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 9.665e-05/0.3362, allocations: 43.91 kB / 0.5656 GB, free: 2.957 MB / 0.4948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.022e-06/0.3362, allocations: 4 kB / 0.5656 GB, free: 2.953 MB / 0.4948 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 7.834e-05/0.3363, allocations: 25.41 kB / 0.5656 GB, free: 2.93 MB / 0.4948 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.656e-05/0.3363, allocations: 8 kB / 0.5656 GB, free: 2.922 MB / 0.4948 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 20 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (20): * Single equations (assignments): 20 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 8.296e-05/0.3364, allocations: 203.8 kB / 0.5658 GB, free: 2.711 MB / 0.4948 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 4.097e-05/0.3364, allocations: 109 kB / 0.5659 GB, free: 2.598 MB / 0.4948 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 4.391e-05/0.3365, allocations: 133.3 kB / 0.5661 GB, free: 2.461 MB / 0.4948 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.999e-05/0.3365, allocations: 182.8 kB / 0.5662 GB, free: 2.277 MB / 0.4948 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.381e-05/0.3365, allocations: 184.2 kB / 0.5664 GB, free: 2.09 MB / 0.4948 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.743e-05/0.3366, allocations: 180.3 kB / 0.5666 GB, free: 1.906 MB / 0.4948 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.000156/0.3367, allocations: 357.4 kB / 0.5669 GB, free: 1.531 MB / 0.4948 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.26e-05/0.3368, allocations: 108.9 kB / 0.567 GB, free: 1.418 MB / 0.4948 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 2.074e-05/0.3368, allocations: 101 kB / 0.5671 GB, free: 1.312 MB / 0.4948 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.964e-05/0.3368, allocations: 184.2 kB / 0.5673 GB, free: 1.125 MB / 0.4948 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.716e-05/0.3369, allocations: 176.3 kB / 0.5675 GB, free: 0.9453 MB / 0.4948 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 3.803e-05/0.3369, allocations: 181.7 kB / 0.5677 GB, free: 0.7617 MB / 0.4948 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.494e-05/0.3369, allocations: 184.2 kB / 0.5678 GB, free: 0.5742 MB / 0.4948 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 9.835e-05/0.337, allocations: 319.7 kB / 0.5681 GB, free: 244 kB / 0.4948 GB Notification: Performance of postOpt removeConstants (simulation): time 4.18e-05/0.3371, allocations: 112.9 kB / 0.5682 GB, free: 124 kB / 0.4948 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.688e-05/0.3371, allocations: 180.2 kB / 0.5684 GB, free: 15.94 MB / 0.5105 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 6.421e-05/0.3372, allocations: 105 kB / 0.5685 GB, free: 15.83 MB / 0.5105 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 4.148e-05/0.3372, allocations: 188.2 kB / 0.5687 GB, free: 15.64 MB / 0.5105 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.206e-05/0.3373, allocations: 104.9 kB / 0.5688 GB, free: 15.53 MB / 0.5105 GB Notification: Performance of sorting global known variables: time 5.371e-05/0.3373, allocations: 55.92 kB / 0.5688 GB, free: 15.47 MB / 0.5105 GB Notification: Performance of sort global known variables: time 5e-08/0.3373, allocations: 0 / 0.5688 GB, free: 15.47 MB / 0.5105 GB Notification: Performance of remove unused functions: time 0.000217/0.3375, allocations: 59.83 kB / 0.5689 GB, free: 15.41 MB / 0.5105 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 0 () * Number of discrete variables: 0 () * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (0): * Single equations (assignments): 0 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0001786/0.3377, allocations: 183.6 kB / 0.5691 GB, free: 15.23 MB / 0.5105 GB Notification: Performance of simCode: created initialization part: time 9.654e-05/0.3378, allocations: 65.14 kB / 0.5691 GB, free: 15.16 MB / 0.5105 GB Notification: Performance of simCode: created event and clocks part: time 6.783e-06/0.3378, allocations: 0 / 0.5691 GB, free: 15.16 MB / 0.5105 GB Notification: Performance of simCode: created simulation system equations: time 9.12e-07/0.3378, allocations: 4 kB / 0.5691 GB, free: 15.16 MB / 0.5105 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0002142/0.338, allocations: 471.7 kB / 0.5696 GB, free: 14.69 MB / 0.5105 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.0005242/0.3386, allocations: 389.8 kB / 0.57 GB, free: 14.29 MB / 0.5105 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 4.105e-05/0.3386, allocations: 83.83 kB / 0.57 GB, free: 14.18 MB / 0.5105 GB Notification: Performance of simCode: alias equations: time 5.976e-05/0.3387, allocations: 17.48 kB / 0.5701 GB, free: 14.16 MB / 0.5105 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 4.452e-05/0.3387, allocations: 63.38 kB / 0.5701 GB, free: 14.1 MB / 0.5105 GB Notification: Performance of SimCode: time 7.01e-07/0.3387, allocations: 0 / 0.5701 GB, free: 14.1 MB / 0.5105 GB Notification: Performance of Templates: time 0.003191/0.3419, allocations: 1.344 MB / 0.5714 GB, free: 12.84 MB / 0.5105 GB " [Timeout remaining time 660] make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.makefile [Timeout 660] (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet -abortSlowSimulation -alarm=240 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.FMI.Conversion.Validation.AirToOutlet.pipe 2>&1) [Timeout 240] [Calling sys.exit(0), Time elapsed: 3.543477433733642]