Fixed "yosys-smtbmc -g" handling of no solution
Fixed "yosys-smtbmc -g" handling of no solution

cliffordwolf/yosys,azonenberg/yosys,SymbiFlow/yosys,antmicro/yosys,cliffordwolf/yosys,antmicro/yosys,YosysHQ/yosys,antmicro/yosys,cliffordwolf/yosys,azonenberg/yosys,YosysHQ/yosys,SymbiFlow/yosys,azonenberg/yosys,YosysHQ/yosys,cliffordwolf/yosys,SymbiFlow/yosys,antmicro/yosys,SymbiFlow/yosys,azonenberg/yosys,cliffordwolf/yosys,YosysHQ/yosys,cliffordwolf/yosys,SymbiFlow/yosys,SymbiFlow/yosys,antmicro/yosys,YosysHQ/yosys,azonenberg/yosys,SymbiFlow/yosys,YosysHQ/yosys,YosysHQ/yosys,antmicro/yosys,cliffordwolf/yosys,cliffordwolf/yosys,cliffordwolf/yosys,azonenberg/yosys,antmicro/yosys,azonenberg/yosys,azonenberg/yosys,YosysHQ/yosys,antmicro/yosys,SymbiFlow/yosys,azonenberg/yosys