PRETORIA, South Africa — The prosecutor cross-examining Oscar Pistorius in his murder trial Friday tried to shred his version of events the night he shot and killed his girlfriend, saying they do not add up and go against how people would react in the situation the double-amputee Olympian has described. Pistorius is charged with premeditated murder for Reeva Steenkamp's shooting death. He claims he shot the model by mistake, thinking she was an intruder about to come out the toilet and attack him.