Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo): time 0.001568/0.001568, allocations: 124.4 kB / 17.79 MB, free: 5.266 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo): time 0.001675/0.001675, allocations: 206.6 kB / 20.75 MB, free: 2.312 MB / 14.72 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo): time 1.514/1.514, allocations: 230.4 MB / 254 MB, free: 15.04 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo): time 0.2335/0.2335, allocations: 46.92 MB / 357 MB, free: 10.2 MB / 286.1 MB " [Timeout remaining time 180] Using package ModelicaTest with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaTest trunk/package.mo) Using package Modelica with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica trunk/package.mo) Using package Complex with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex trunk/package.mo) Using package ModelicaServices with version trunk (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices trunk/package.mo) Running command: "" <> buildModelFMU(ModelicaTest.MultiBody.FourbarVariants.JointUSP,fileNamePrefix="ModelicaTest_trunk_ModelicaTest_MultiBody_FourbarVariants_JointUSP",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ModelicaTest.MultiBody.FourbarVariants.JointUSP,fileNamePrefix="ModelicaTest_trunk_ModelicaTest_MultiBody_FourbarVariants_JointUSP",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.002243/0.002243, allocations: 83.86 kB / 0.491 GB, free: 7.738 MB / 350.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1271/0.1293, allocations: 66.04 MB / 0.5554 GB, free: 5.566 MB / 414.1 MB Notification: Performance of NFInst.instantiate(ModelicaTest.MultiBody.FourbarVariants.JointUSP): time 0.02014/0.1495, allocations: 16.04 MB / 0.5711 GB, free: 5.434 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.0132/0.1627, allocations: 5.483 MB / 0.5765 GB, free: 15.93 MB / 446.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.00297/0.1656, allocations: 127.4 kB / 0.5766 GB, free: 15.81 MB / 446.1 MB Notification: Performance of NFTyping.typeComponents: time 0.01036/0.176, allocations: 5.179 MB / 0.5816 GB, free: 10.61 MB / 446.1 MB Notification: Performance of NFTyping.typeBindings: time 0.007637/0.1836, allocations: 2.665 MB / 0.5843 GB, free: 7.938 MB / 446.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003531/0.1872, allocations: 1.395 MB / 0.5856 GB, free: 6.543 MB / 446.1 MB Notification: Performance of NFFlatten.flatten: time 0.3119/0.4991, allocations: 8.235 MB / 0.5937 GB, free: 6.676 MB / 446.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.008811/0.5079, allocations: 5.763 MB / 0.5993 GB, free: 6.172 MB / 446.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.006204/0.5141, allocations: 2.809 MB / 0.602 GB, free: 6.02 MB / 446.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.007756/0.5218, allocations: 4.026 MB / 0.606 GB, free: 5.668 MB / 446.1 MB Notification: Performance of NFPackage.collectConstants: time 0.003307/0.5251, allocations: 0.6342 MB / 0.6066 GB, free: 5.668 MB / 446.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.006235/0.5314, allocations: 1.822 MB / 0.6084 GB, free: 5.668 MB / 446.1 MB Notification: Performance of NFScalarize.scalarize: time 0.006382/0.5378, allocations: 3.445 MB / 0.6117 GB, free: 5.297 MB / 446.1 MB Notification: Performance of NFVerifyModel.verify: time 0.01014/0.5479, allocations: 3.781 MB / 0.6154 GB, free: 2.957 MB / 446.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0191/0.567, allocations: 12.19 MB / 0.6273 GB, free: 13 MB / 462.1 MB Notification: Performance of FrontEnd - DAE generated: time 7.565e-06/0.567, allocations: 0 / 0.6273 GB, free: 13 MB / 462.1 MB Notification: Performance of FrontEnd: time 2.214e-06/0.567, allocations: 0 / 0.6273 GB, free: 13 MB / 462.1 MB Notification: Performance of Transformations before backend: time 0.0005252/0.5675, allocations: 4 kB / 0.6273 GB, free: 13 MB / 462.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 2166 * Number of variables: 2166 Notification: Performance of Generate backend data structure: time 0.02563/0.5932, allocations: 8.372 MB / 0.6355 GB, free: 7.445 MB / 462.1 MB Notification: Performance of prepare preOptimizeDAE: time 4.401e-05/0.5932, allocations: 9.312 kB / 0.6355 GB, free: 7.445 MB / 462.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.003298/0.5965, allocations: 1.149 MB / 0.6366 GB, free: 6.758 MB / 462.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.05645/0.6529, allocations: 8.41 MB / 0.6448 GB, free: 360 kB / 462.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01457/0.6675, allocations: 5.901 MB / 0.6506 GB, free: 10.65 MB / 478.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0004095/0.6679, allocations: 383.7 kB / 0.651 GB, free: 10.32 MB / 478.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.002307/0.6702, allocations: 0.5088 MB / 0.6515 GB, free: 9.852 MB / 478.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.03825/0.7085, allocations: 15.41 MB / 0.6665 GB, free: 9.781 MB / 494.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 0.000265/0.7087, allocations: 71.27 kB / 0.6666 GB, free: 9.738 MB / 494.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00106/0.7098, allocations: 236.5 kB / 0.6668 GB, free: 9.551 MB / 494.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.004358/0.7142, allocations: 2.545 MB / 0.6693 GB, free: 7.039 MB / 494.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.03068/0.7448, allocations: 12.88 MB / 0.6819 GB, free: 10.38 MB / 0.4981 GB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.08666/0.8315, allocations: 57.02 MB / 0.7376 GB, free: 0.5977 MB / 0.545 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0191/0.8506, allocations: 6.109 MB / 0.7435 GB, free: 10.34 MB / 0.5606 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.004922/0.8555, allocations: 3.097 MB / 0.7466 GB, free: 7.238 MB / 0.5606 GB Notification: Performance of preOpt evalFunc (simulation): time 0.01952/0.875, allocations: 11.38 MB / 0.7577 GB, free: 11.5 MB / 0.5762 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.716e-05/0.8751, allocations: 61.69 kB / 0.7577 GB, free: 11.44 MB / 0.5762 GB Notification: Performance of pre-optimization done (n=245): time 5.12e-06/0.8751, allocations: 0 / 0.7577 GB, free: 11.44 MB / 0.5762 GB Notification: Performance of matching and sorting (n=338): time 0.1461/1.021, allocations: 39.82 MB / 0.7966 GB, free: 3.699 MB / 0.6075 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001629/1.021, allocations: 244.5 kB / 0.7968 GB, free: 3.41 MB / 0.6075 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.01129/1.033, allocations: 5.747 MB / 0.8025 GB, free: 13.69 MB / 0.6231 GB Notification: Performance of collectPreVariables (initialization): time 0.000852/1.034, allocations: 77.7 kB / 0.8025 GB, free: 13.61 MB / 0.6231 GB Notification: Performance of collectInitialEqns (initialization): time 0.004333/1.038, allocations: 4.617 MB / 0.807 GB, free: 9.004 MB / 0.6231 GB Notification: Performance of collectInitialBindings (initialization): time 0.001964/1.04, allocations: 1.29 MB / 0.8083 GB, free: 7.73 MB / 0.6231 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.002788/1.043, allocations: 1.632 MB / 0.8099 GB, free: 6.086 MB / 0.6231 GB Notification: Performance of setup shared object (initialization): time 0.0001396/1.043, allocations: 301.1 kB / 0.8102 GB, free: 5.789 MB / 0.6231 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.00642/1.049, allocations: 3.78 MB / 0.8139 GB, free: 2 MB / 0.6231 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.01086/1.06, allocations: 8.305 MB / 0.822 GB, free: 7.543 MB / 0.6387 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.02043/1.08, allocations: 13.01 MB / 0.8347 GB, free: 8.676 MB / 0.6544 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 0.0001589/1.081, allocations: 44 kB / 0.8347 GB, free: 8.633 MB / 0.6544 GB Notification: Performance of matching and sorting (n=1067) (initialization): time 0.3604/1.441, allocations: 15.45 MB / 0.8498 GB, free: 218.3 MB / 0.6544 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001741/1.441, allocations: 72.55 kB / 0.8499 GB, free: 218.3 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 0.0003694/1.442, allocations: 157.1 kB / 0.85 GB, free: 218.3 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01624/1.458, allocations: 4.095 MB / 0.854 GB, free: 218.3 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.007442/1.465, allocations: 1.801 MB / 0.8558 GB, free: 218.3 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.03317/1.498, allocations: 20.94 MB / 0.8762 GB, free: 209.9 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.007886/1.506, allocations: 492.6 kB / 0.8767 GB, free: 209.8 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.001581/1.508, allocations: 472.5 kB / 0.8772 GB, free: 209.7 MB / 0.6544 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 717 * Number of states: 0 () * Number of discrete variables: 46 (jointUSP.prismatic.positiveBranch,body2.color[3],body2.color[2],body2.color[1],body2.body.sphereColor[3],body2.body.sphereColor[2],body2.body.sphereColor[1],jointUSP.rod1Color[3],jointUSP.rod1Color[2],jointUSP.rod1Color[1],jointUSP.cylinderColor[3],jointUSP.cylinderColor[2],jointUSP.cylinderColor[1],jointUSP.sphereColor[3],jointUSP.sphereColor[2],jointUSP.sphereColor[1],ground_rod.color[3],ground_rod.color[2],ground_rod.color[1],body3.color[3],body3.color[2],body3.color[1],body3.body.sphereColor[3],body3.body.sphereColor[2],body3.body.sphereColor[1],body1.color[3],body1.color[2],body1.color[1],body1.body.sphereColor[3],body1.body.sphereColor[2],body1.body.sphereColor[1],revolute.cylinderColor[3],revolute.cylinderColor[2],revolute.cylinderColor[1],world.gravityArrowColor[3],world.gravityArrowColor[2],world.gravityArrowColor[1],world.axisColor_x[3],world.axisColor_x[2],world.axisColor_x[1],world.groundColor[3],world.groundColor[2],world.groundColor[1],world.gravitySphereColor[3],world.gravitySphereColor[2],world.gravitySphereColor[1]) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (966): * Single equations (assignments): 962 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,77,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.005864/1.514, allocations: 3.113 MB / 0.8802 GB, free: 208.5 MB / 0.6544 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001594/1.515, allocations: 0.5534 MB / 0.8807 GB, free: 208.5 MB / 0.6544 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01895/1.534, allocations: 9.566 MB / 0.8901 GB, free: 205.3 MB / 0.6544 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.324e-05/1.534, allocations: 34.72 kB / 0.8901 GB, free: 205.3 MB / 0.6544 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.062e-05/1.534, allocations: 13.75 kB / 0.8901 GB, free: 205.3 MB / 0.6544 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.285e-05/1.534, allocations: 16.66 kB / 0.8901 GB, free: 205.3 MB / 0.6544 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0359/1.57, allocations: 19.57 MB / 0.9093 GB, free: 190.2 MB / 0.6544 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.776e-05/1.57, allocations: 8 kB / 0.9093 GB, free: 190.1 MB / 0.6544 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002231/1.573, allocations: 0.4897 MB / 0.9097 GB, free: 189.7 MB / 0.6544 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01128/1.584, allocations: 3.649 MB / 0.9133 GB, free: 186 MB / 0.6544 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006026/1.584, allocations: 65.62 kB / 0.9134 GB, free: 186 MB / 0.6544 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.02223/1.607, allocations: 18.44 MB / 0.9314 GB, free: 167.5 MB / 0.6544 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 6.772e-06/1.607, allocations: 11.94 kB / 0.9314 GB, free: 167.5 MB / 0.6544 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.02236/1.629, allocations: 14.2 MB / 0.9453 GB, free: 153.4 MB / 0.6544 GB Notification: Performance of postOpt removeConstants (simulation): time 0.001773/1.631, allocations: 0.5946 MB / 0.9458 GB, free: 152.8 MB / 0.6544 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009749/1.632, allocations: 56 kB / 0.9459 GB, free: 152.8 MB / 0.6544 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002663/1.634, allocations: 227.7 kB / 0.9461 GB, free: 152.6 MB / 0.6544 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0007345/1.635, allocations: 229.7 kB / 0.9463 GB, free: 152.3 MB / 0.6544 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002375/1.635, allocations: 84 kB / 0.9464 GB, free: 152.3 MB / 0.6544 GB Notification: Performance of sorting global known variables: time 0.004869/1.64, allocations: 3.643 MB / 0.95 GB, free: 148.6 MB / 0.6544 GB Notification: Performance of sort global known variables: time 8e-08/1.64, allocations: 4 kB / 0.95 GB, free: 148.6 MB / 0.6544 GB Notification: Performance of remove unused functions: time 0.007941/1.648, allocations: 1.684 MB / 0.9516 GB, free: 147 MB / 0.6544 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 29 * Number of states: 2 (revolute.phi,revolute.w) * 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 (256): * Single equations (assignments): 252 * Array equations: 3 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,64,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0226/1.671, allocations: 14.95 MB / 0.9662 GB, free: 131.8 MB / 0.6544 GB Notification: Performance of simCode: created initialization part: time 0.01315/1.684, allocations: 8.829 MB / 0.9748 GB, free: 123 MB / 0.6544 GB Notification: Performance of simCode: created event and clocks part: time 1.222e-05/1.684, allocations: 4 kB / 0.9748 GB, free: 123 MB / 0.6544 GB Notification: Performance of simCode: created simulation system equations: time 0.004475/1.688, allocations: 3.321 MB / 0.9781 GB, free: 119.7 MB / 0.6544 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.00471/1.693, allocations: 0.7771 MB / 0.9788 GB, free: 118.9 MB / 0.6544 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.1204/1.814, allocations: 78.51 MB / 1.056 GB, free: 33.45 MB / 0.6544 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.007277/1.821, allocations: 4.824 MB / 1.06 GB, free: 28.59 MB / 0.6544 GB Notification: Performance of simCode: alias equations: time 0.006477/1.827, allocations: 2.59 MB / 1.063 GB, free: 25.99 MB / 0.6544 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.004922/1.832, allocations: 3.061 MB / 1.066 GB, free: 22.93 MB / 0.6544 GB Notification: Performance of SimCode: time 1.072e-06/1.832, allocations: 0 / 1.066 GB, free: 22.93 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.4854/2.318, allocations: 128.9 MB / 1.192 GB, free: 146.7 MB / 0.6544 GB Notification: Performance of buildModelFMU: Generate platform static: time 38.79/41.11, allocations: 11.33 kB / 1.192 GB, free: 146.7 MB / 0.6544 GB " [Timeout remaining time 619] (rm -f ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.pipe ; mkfifo ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.pipe ; head -c 1048576 < ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.pipe >> ../files/ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.sim & python3 -m fmpy simulate --output-file ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv --start-time 0 --stop-time 5 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.0009996 ModelicaTest_trunk_ModelicaTest_MultiBody_FourbarVariants_JointUSP.fmu > ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.pipe 2>&1) [Timeout 52.5] diffSimulationResults("ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/Reference-modelica.org/ReferenceResults/MAP-LIB_ReferenceResults/v4.1.0/ModelicaTest/MultiBody/FourbarVariants/JointUSP/JointUSP.csv","/var/lib/jenkins1/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/files/ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP.diff",relTol=0.003,relTolDiffMinMax=0.003,rangeDelta=0.001) [Timeout 660] "Error: Could not read variable revolute.phi in file ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv. Warning: Get data of variable revolute.phi from file ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv failed! Error: Could not read variable revolute.w in file ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv. Warning: Get data of variable revolute.w from file ModelicaTest_trunk_ModelicaTest.MultiBody.FourbarVariants.JointUSP_res.csv failed! " [Timeout remaining time 660] Reference file matches [Calling sys.exit(0), Time elapsed: 44.53554081602488]