[#0] WARNING:InputArguments -- The parameter 'sigma1' with range [-inf, inf] of the RooGaussian 'sig1' exceeds the safe range of (0, inf). Advise to limit its range.
[#0] WARNING:InputArguments -- The parameter 'sigma2' with range [-inf, inf] of the RooGaussian 'sig2' exceeds the safe range of (0, inf). Advise to limit its range.
[#1] INFO:Fitting -- createChi2(model) fixing normalization set for coefficient determination to observables in data
[#1] INFO:Fitting -- using generic CPU library compiled with no vectorizations
[#1] INFO:Minimization -- [fitFCN] No discrete parameters, performing continuous minimization only
Minuit2Minimizer: Minimize with max-calls 2000 convergence for edm < 1 strategy 1
Minuit2Minimizer : Valid minimum - status = 0
FVAL  = 104.639633447530315
Edm   = 0.000778057066726829108
Nfcn  = 70
a0	  = 0.501526	 +/-  0.0229096	(limited)
a1	  = 0.158456	 +/-  0.0368354	(limited)
bkgfrac	  = 0.506609	 +/-  0.011349	(limited)
sig1frac	  = 0.815448	 +/-  0.0373695	(limited)
[#1] INFO:Fitting -- createChi2(model) fixing normalization set for coefficient determination to observables in data
90.86495991422795